Pgm-Fi System (v6) — Acura TSX II (2008-2014)

Scheme 66

Scheme 66: Component Location Index

Scheme 67

DTC P0101: MAF Sensor Circuit Range/Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P1128, P1129, P2228, and/or P2229 are stored at the same time as DTC P0101, troubleshoot those DTCs first, then recheck for DTC P0101.

Check for poor connections or damage to these parts: PCV hose Intake air duct Air cleaner Purge (PCS) line Brake booster Brake booster hose Are the parts OK? YES -Go to step 2 . NO -Repair or replace the damaged part(s), then go to step 14 .
Check for damage or looseness at the intake air duct in the air cleaner. Is it OK? YES -Go to step 3 . NO -Reconnect or replace the intake air duct, then go to step 14 .
Check for a dirty air cleaner element. Is it dirty? YES -Replace the air cleaner element (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6) ), then go to step 14 . NO -Go to step 4 .
Turn the ignition switch to ON (II).
Check the MAF SENSOR in the DATA LIST with the HDS. Is there about 0.2 gm/s or 0.5 V? YES -Go to step 6 . NO -Go to step 12 .
Start the engine.
Vary the engine speed between 2,000 rpm and 3,000 rpm.
Check the MAF SENSOR in the DATA LIST with the HDS. Does the reading change? YES -Go to step 9 . NO -Go to step 12 .
Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED MAP SENSOR MAF SENSOR
Monitor the OBD STATUS for DTC P0101 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 12 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the screen indicates NOT COMPLETED, go to step 10 and recheck.
Turn the ignition switch to LOCK (0).
Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED MAP SENSOR MAF SENSOR
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0101 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step 1 . NO -Go to step 19 .
Monitor the OBD STATUS for DTC P0101 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 18 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 17 .

DTC P0102: MAF Sensor Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 68

Scheme 68: DTC P0102: MAF Sensor Circuit Low Voltage

Scheme 69

Scheme 70

Scheme 71

Turn the ignition switch to ON (II), and wait 2 seconds.
Check the MAF SENSOR in the DATA LIST with the HDS. Is about 0 gm/s, or 0.1 V or less indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the MAF sensor/IAT sensor 5P connector.
Turn the ignition switch to ON (II).
Measure the voltage between MAF sensor/IAT sensor 5P connector terminal No. 5 and body ground. Is there battery voltage? YES -Go to step 7 . NO -Repair open in the wire between PGM-FI main relay 1 and the MAF sensor/IAT sensor, then go to step 19 .
Turn the ignition switch to LOCK (0).
Measure the resistance between MAF sensor/IAT sensor 5P connector terminal No. 3 and body ground. Is there 190-210 kohms? YES -Go to step 13 . NO -Go to step 9 .
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A20 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (A20) and the MAF sensor/IAT sensor, then go to step 20 . NO -Go to step 12 .
Check for continuity between MAF sensor/IAT sensor 5P connector terminal No. 3 and PCM connector terminal A20. Is there continuity? YES -Go to step 25 . NO -Repair open in the wire between the PCM (A20) and the MAF sensor/IAT sensor, then go to step 20 .
Substitute a known-good MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 2,000 rpm without load (in P or N).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0102 indicated? YES -Reinstall the original MAF sensor/IAT sensor, then go to step 26 . NO -Replace the original MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 19 .
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0102 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0102 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0103: MAF Sensor Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 72

Scheme 72: DTC P0103: MAF Sensor Circuit High Voltage

Scheme 73

Turn the ignition switch to ON (II), and wait 2 seconds.
Check the MAF SENSOR in the DATA LIST with the HDS. Is about 202 gm/s, or 4.89 V or more indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the MAF sensor/IAT sensor 5P connector.
Disconnect PCM connector A (49P).
Check for continuity between MAF sensor/IAT sensor 5P connector terminal No. 4 and PCM connector terminal A9. Is there continuity? YES -Go to step 8 . NO -Repair open in the wire between the PCM (A9) and the MAF sensor/IAT sensor, then go to step 15 .
Reconnect PCM connector A (49P).
Connect MAF sensor/IAT sensor 5P connector terminals No. 3 and No. 4 with a jumper wire.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0103 indicated? YES -Go to step 20 . NO-Go to step 13 .
Turn the ignition switch to LOCK (0).
Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0103 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0103 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0107: MAP Sensor Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 74

Scheme 74: DTC P0107: MAP Sensor Circuit Low Voltage

Scheme 75

Scheme 76

Turn the ignition switch to ON (II).
Check the MAP SENSOR in the DATA LIST with the HDS. Is about 3kPa (1.0 inHg, 26 mmHg), or 0.23 V or less indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the MAP sensor 3P connector.
Turn the ignition switch to ON (II).
Check the MAP SENSOR in the DATA LIST with the HDS. Is about 3 kPa (1.0 inHg, 26 mmHg), or 0.23 V or less indicated? YES -Go to step 12 . NO -Go to step 7 .
Measure the voltage between MAP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES-Go to step 16 . NO-Go to step 8 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B36 and MAP sensor 3P connector terminal No. 1. Is there continuity? YES -Go to step 23 . NO -Repair open in the wire between the PCM (B36) and the MAP sensor, then go to step 18 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between MAP sensor 3P connector terminal No. 2 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (B35) and the MAP sensor, then go to step 18 . NO -Go to step 23 .
Turn the ignition switch to LOCK (0).
Replace the MAP sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0107 indicated? YES -Check for poor connections or loose terminals at the MAP sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0107 indicated? YES -Check for poor connections or loose terminals at the MAP sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0108: MAP Sensor Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 77

Scheme 77: DTC P0108: MAP Sensor Circuit High Voltage

Scheme 78

Scheme 79

Scheme 80

Turn the ignition switch to ON (II).
Check the MAP SENSOR in the DATA LIST with the HDS. Is about 160 kPa (47.1 inHg, 1,197 mmHg), or 4.49 V or more indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the MAP sensor 3P connector.
Connect MAP sensor 3P connector terminals No. 2 and No. 3 with a jumper wire.
Turn the ignition switch to ON (II).
Check the MAP SENSOR in the DATA LIST with the HDS. Is about 160 kPa (47.1 inHg, 1,197 mmHg), or 4.49 V or more indicated? YES -Go to step 9 . NO -Go to step 20 .
Turn the ignition switch to LOCK (0).
Remove the jumper wire from the MAP sensor 3P connector.
Turn the ignition switch to ON (II).
Measure the voltage between MAP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES -Go to step 16 . NO -Go to step 12 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B34 and MAP sensor 3P connector terminal No. 3. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (B34) and the MAP sensor, then go to step 22 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B35 and MAP sensor 3P connector terminal No. 2. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (B35) and the MAP sensor, then go to step 22 .
Turn the ignition switch to LOCK (0).
Replace the MAP sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0108 indicated? YES -Check for poor connections or loose terminals at the MAP sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0108 indicated? YES -Check for poor connections or loose terminals at the MAP sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0111: IAT Sensor Circuit Range/Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Check for poor connections or loose terminals at ECT sensors 1 and 2, and the MAF sensor/IAT sensor. Are the connections and terminals OK? YES -Go to step 2 . NO -Repair the connections or terminals, then go to step 15 .
Remove the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Allow the MAF sensor/IAT sensor to cool to the ambient temperature.
Note the ambient temperature.
Connect the MAF sensor/IAT sensor to its 5P connector, but do not install it.
Turn the ignition switch to ON (II).
Note the value of the IAT SENSOR quickly in the DATA LIST with the HDS.
Compare the value of the IAT SENSOR to the ambient temperature. Does the value of the IAT SENSOR differ 5.4°F (3°C) or more from ambient temperature? YES -Go to step 13 . NO -Go to step 9 .
Disconnect the MAF sensor/IAT sensor from its 5P connector.
Using a heat gun, blow hot air on the MAF sensor/IAT sensor for a few seconds. Do not apply the heat longer than a few seconds or you will damage the sensor.
Connect the MAF sensor/IAT sensor to its 5P connector, but do not install it.
Check the IAT SENSOR in the DATA LIST with the HDS. Does the IAT SENSOR change 58°F (32°C) or more? YES -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. NO -Go to step 13 .
Turn the ignition switch to LOCK (0).
Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0111 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0112: IAT Sensor Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 81

Scheme 81: DTC P0112: IAT Sensor Circuit Low Voltage

Turn the ignition switch to ON (II).
Check the IAT SENSOR in the DATA LIST with the HDS. Is about 356°F (180°C) or more, or 0.08 V or less indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the MAF sensor/IAT sensor 5P connector.
Turn the ignition switch to ON (II).
Check the IAT SENSOR in the DATA LIST with the HDS. Is about 356°F (180°C) or more, or 0.08 V or less indicated? YES -Go to step 7 . NO -Go to step 11 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between MAF sensor/IAT sensor 5P connector terminal No. 2 and body ground. Is there continuity? YES -Repair short in the wire between the MAF sensor/IAT sensor and the PCM (C24), then go to step 13 . NO -Go to step 18 .
Turn the ignition switch to LOCK (0).
Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0112 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0112 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0113: IAT Sensor Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 82

Scheme 82: DTC P0113: IAT Sensor Circuit High Voltage

Scheme 83

Scheme 84

Scheme 85

Turn the ignition switch to ON (II).
Check the IAT SENSOR in the DATA LIST with the HDS. Is about -40°F (-40°C) or less, or 4.92 V or more indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the MAF sensor/IAT sensor 5P connector.
Connect MAF sensor/IAT sensor 5P connector terminals No. 1 and No. 2 with a jumper wire.
Turn the ignition switch to ON (II).
Check the IAT SENSOR in the DATA LIST with the HDS. Is about -40°F (-40°C) or less, or 4.92 V or more indicated? YES -Go to step 8 . NO -Go to step 20 .
Turn the ignition switch to LOCK (0).
Remove the jumper wire from the MAF sensor/IAT sensor 5P connector.
Turn the ignition switch to ON (II).
Measure the voltage between MAF sensor/IAT sensor 5P connector terminal No. 2 and body ground. Is there about 5 V? YES -Go to step 12 . NO -Go to step 16 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C16 and MAF sensor/IAT sensor 5P connector terminal No. 1. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (C16) and the MAF sensor/IAT sensor, then go to step 22 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C24 and MAF sensor/IAT sensor 5P connector terminal No. 2. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (C24) and the MAF sensor/IAT sensor, then go to step 22 .
Turn the ignition switch to LOCK (0).
Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0113 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0113 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0116: ECT Sensor 1 Circuit Range/Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 176°F (80°C) or more, or 0.78 V or less indicated? YES -Go to step 6 . NO -Go to step 3 .
Note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Check ECT SENSOR 1 in the DATA LIST with the HDS. Does ECT SENSOR 1 change 18°F(10°C) or more? YES -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. NO -Go to step 11 .
Note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
Turn the ignition switch to LOCK (0).
Open the hood, and let the engine cool for 3 hours.
Turn the ignition switch to ON (II).
Check ECT SENSOR 1 in the DATA LIST with the HDS. Does ECT SENSOR 1 change 18°F (10°C) or more? YES -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. NO -Go to step 11 .
Turn the ignition switch to LOCK (0).
Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0116 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1 and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0117: ECT Sensor 1 Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 86

Scheme 86: DTC P0117: ECT Sensor 1 Circuit Low Voltage

Turn the ignition switch to ON (II).
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 356°F (180°C) or more, or 0.08 V or less indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the ECT sensor 1 2P connector.
Turn the ignition switch to ON (II).
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 356°F (180°C) or more, or 0.08 V or less indicated? YES -Go to step 7 . NO -Go to step 11 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between ECT sensor 1 2P connector terminal No. 1 and body ground. Is there continuity? YES -Repair short in the wire between ECT sensor 1 and the PCM (C32), then go to step 13 . NO -Go to step 18 .
Turn the ignition switch to LOCK (0).
Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0117 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1 and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0117 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0118: ECT Sensor 1 Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 87

Scheme 87: DTC P0118: ECT Sensor 1 Circuit High Voltage

Scheme 88

Scheme 89

Scheme 90

Turn the ignition switch to ON (II).
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about -40°F(-40°C) or less, or 4.92 V or more indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the ECT sensor 1 2P connector.
Connect ECT sensor 1 2P connector terminals No. 1 and No. 2 with a jumper wire.
Turn the ignition switch to ON (II).
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about -40°F (-40°C) or less, or 4.92 V or more indicated? YES -Go to step 8 . NO -Go to step 20 .
Turn the ignition switch to LOCK (0).
Remove the jumper wire from the ECT sensor 1 2P connector.
Turn the ignition switch to ON (II).
Measure the voltage between ECT sensor 1 2P connector terminal No. 1 and body ground. Is there about 5 V? YES -Go to step 12 . NO -Go to step 16 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C16 and ECT sensor 1 2P connector terminal No. 2. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (C16) and ECT sensor 1, then go to step 22 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C32 and ECT sensor 1 2P connector terminal No. 1. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (C32) and ECT sensor 1, then go to step 22 .
Turn the ignition switch to LOCK (0).
Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0118 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1 and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0118 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0125: ECT Sensor 1 Malfunction/Slow Response

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Start the engine, and let it idle for 5 minutes or more.
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 10°F (-12°C) or less indicated? YES -Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the connections and the terminals are OK, replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 9 . NO -Go to step 3 .
Turn the ignition switch to LOCK (0).
Allow the engine to cool to 104°F (40°C) or less.
Start the engine, and let it idle until ECT SENSOR 1 goes up to about 158°F (70°C).
Check ECT SENSOR 2 in the DATA LIST with the HDS. Does ECT SENSOR 2 also read about 158°F (70°C)? YES -Go to step 7 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM.
Check the thermostat (see «FAN MOTOR TEST»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ). Is the thermostat OK? YES -Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the connections and the terminals are OK, replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 8 . NO -Replace the thermostat (see «THERMOSTAT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ), then go to step 8 .
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Turn the ignition switch to LOCK (0).
Allow the engine to cool to 104°F (40°C) or less.
Start the engine, and let it idle until ECT SENSOR 1 goes up to about 158°F (70°C).
Check ECT SENSOR 2 in the DATA LIST with the HDS. Does ECT SENSOR 2 also read about 158°F (70°C)? YES -Go to step 1 and recheck. NO -Troubleshooting is complete.

DTC P0128: Cooling System Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Make sure the blower switch is off.
Check the FAN HIGH CTRL and FAN LOW CTRL in the DATA LIST with the HDS. Is it OFF? YES -Go to step 5 . NO -Wait until the FAN HIGH CTRL and FAN LOW CTRL are off, then go to step 5 .
Check the radiator fan operation. Does the radiator fan keep running? YES -Check the radiator fan high speed circuit (see «RADIATOR FAN HIGH SPEED CIRCUIT TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#fan-controls-v6) ), and the radiator fan relay (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). If the circuit and the relay are OK, go to step 19 . NO -Go to step 6 .
Let the engine cool until the coolant temperature is 104°F (40°C) or less.
Note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
Start the engine, and let it idle.
Let the engine idle until ECT SENSOR 1 goes up 36°F (20°C) or more from the recorded temperature.
Check ECT SENSOR 2 in the DATA LIST with the HDS.
Compare the recorded value of ECT SENSOR 2 and the present value of ECT SENSOR 2. Did the temperature rise 14°F (8°C) or more? YES -Test the thermostat (see «FAN MOTOR TEST»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ), then go to step 12 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Let the engine cool until the coolant temperature is between 21°F (-6°C) and 104°F (40°C).
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Test-drive at a steady speed between 15-75 mph (24-120 km/h) for 10 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0128 indicated? YES -Check the cooling the system, then go to step 19 . NO -Go to step 18 .
Monitor the OBD STATUS for DTC P0128 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 17 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check the cooling the system, then go to step 19 . If the screen indicates NOT COMPLETED, go to step 14 .
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Let the engine cool until the coolant temperature is between 21°F (-6°C) and 104°F (40°C).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive at a steady speed between 15-75 mph (24-120 km/h) for 10 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0128 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 20 . If the PCM was substituted, go to step 1 . NO -Go to step 24 .
Monitor the OBD STATUS for DTC P0128 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 23 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 20 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, go to step 20 .

DTC P0133: Rear A/F Sensor (Bank 1, Sensor 1) Malfunction/Slow Response; DTC P0153: Front A/F Sensor (Bank 2, Sensor 1) Malfunction/Slow Response

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0139 and/or P0159* is stored at the same time as DTC P0133 and/or P0153*, troubleshoot DTC P0139 and/or P0159* first, then recheck for DTC P0133 and/or P0153*. Information marked with an asterisk (*) applies to the front bank (Bank 2).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Engine speed between 1,250-2,100 rpm Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed of 35 mph (57 km/h) or more
Monitor the OBD STATUS for DTC P0133 and/or P0153* in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 6 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 3 and recheck.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Engine speed between 1,250-2,100 rpm Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed of 35 mph (57 km/h) or more
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0133 and/or P0153* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 14 .
Monitor the OBD STATUS for DTC P0133 and/or P0153* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 13 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 11 .

DTC P0134: Rear A/F Sensor (Bank 1, Sensor 1) Heater System Malfunction; DTC P0154: Front A/F Sensor (Bank 2, Sensor 1) Heater System Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P2251 and/or P2254* is stored at the same time as DTC P0134 and/or P0154*, troubleshoot DTC P2251 and/or P2254* first, then recheck for P0134 and/or P0154*. Information marked with an asterisk (*) applies to the front bank (Bank 2).

Scheme 91

Scheme 91: DTC P0134: Rear A/F Sensor (Bank 1, Sensor 1) Heater System Malfunction; DTC P0154: Front A/F Sensor

Scheme 92

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, and let it idle without load (in P or N) for at least 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0134 and/or P0154* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the A/F sensor (Sensor 1) 6P connector.
Disconnect PCM connector B (49P).
Check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 4 and PCM connector terminal B13 (B14)*. Is there continuity? YES -Go to step 10 . NO -Repair open in the wire between the PCM (B13 (B14)*) and the A/F sensor (Sensor 1), then go to step 15 .
Reconnect PCM connector B (49P).
Start the engine, and let it idle without load (in P or N) for at least 1 minute.
Measure the voltage between A/F sensor (Sensor 1) 6P connector terminal No. 4 and body ground. Is there about 0.2 V or less? YES -Go to step 21 . NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) )
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0134 and/or P0154* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM, then go to step 1 . NO -Go to step 20 .
Monitor the OBD STATUS for DTC P0134 and/or P0154* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 19 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle without load (in P or N) for at least 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0134 and/or P0154* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P0134 and/or P0154* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P0135: Rear A/F Sensor (Bank 1, Sensor 1) Heater Circuit Malfunction; DTC P0155: Front A/F Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction

Scheme 93

Scheme 93: DTC P0135: Rear A/F Sensor (Bank 1, Sensor 1) Heater Circuit Malfunction; DTC P0155: Front A/F Senso

Scheme 94

Scheme 95

Scheme 96

Scheme 97

Scheme 98

Scheme 99

Scheme 100

Scheme 101

Scheme 102

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0135 and/or P0155* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM.
Turn the ignition switch to LOCK (0).
Check the No. 14 Fl SUB (15 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Go to step 7 . NO -Go to step 20 .
Remove the PGM-FI subrelay (A) from the under-hood fuse/relay box.
Test the PGM-FI subrelay (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Is the relay OK? YES -Go to step 9. NO -Replace the PGM-FI subrelay, then go to step 26 .
Disconnect the A/F sensor (Sensor 1) 6P connector.
At the sensor side, measure the resistance between A/F sensor (Sensor 1) 6P connector terminals No. 1 and No. 2. Is there 2.5-4.0 ohms at the room temperature? YES -Go to step 11 . NO -Go to step 25 .
At the sensor side, check for continuity between each terminal of the A/F sensor (Sensor 1) 6P connector and body ground. Is there continuity to body ground at any of the terminals? YES -Go to step 25 . NO -Go to step 12 .
At the sensor side, check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 1 and each of the other terminals in the connector individually. Is there continuity? YES -Go to step 25 . NO -Go to step 13 .
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C6 (C8)* and body ground. Is there continuity? YES -Repair short in the wire between the PCM (C6 (C8)*) and the A/F sensor (Sensor 1), then go to step 26 . NO -Go to step 16 .
Check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 2 and PCM connector C6 (C8)*. Is there continuity? YES -Go to step 17 . NO -Repair open in the wire between the PCM (C6 (C8)*) and the A/F sensor (Sensor 1), then go to step 26 .
Check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 1 and PGM-FI subrelay 4P connector terminal No. 2. Is there continuity? YES -Go to step 18 . NO -Repair open in the wire between the A/F sensor (Sensor 1) and the PGM-FI subrelay, then go to step 26 .
Disconnect PCM connector A (49P).
Check for continuity between PGM-FI subrelay 4P connector terminal No. 3 and PCM connector terminal A40. Is there continuity? YES -Go to step 32 . NO -Repair open in the wire between the PGM-FI subrelay, and the PCM (A40), then go to step 26 .
Remove the PGM-FI subrelay (A) from the under-hood fuse/relay box.
Disconnect the front and rear A/F sensor (Sensor 1)6P connectors.
Disconnect the front and rear secondary HO2S (Sensor 2) 4P connectors.
Disconnect the EVAP canister vent shut valve 2P connector.
Check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 1 and body ground. Is there continuity? YES -Repair short in the wire between the PGM-FI subrelay and the A/F sensor (Sensor 1), then go to step 26 . NO -Check the under-hood fuse/relay box, and replace it if needed (see «REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-hood-fuserelay-box-v6__removal-and-installation) ). Also replace the No. 14 Fl SUB (15 A) fuse, then go to step 26 .
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0135 and/or P0155* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM, then go to step 1 . NO -Go to step 31 .
Monitor the OBD STATUS for DTC P0135 and/or P0155* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 30 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0135 and/or P0155* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 34 . If the PCM was substituted, go to step 1 . NO -Go to step 36 .
Monitor the OBD STATUS for DTC P0135 and/or P0155* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 35 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 34 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P0137: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Low Voltage; DTC P0157: Front Secondary HO2S (Bank 2, Sensor 2) Circuit Low Voltage

Scheme 103

Scheme 103: DTC P0137: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Low Voltage; DTC P0157: Front Secondary HO

Scheme 104

Scheme 105

Turn the ignition switch ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Monitor the OBD STATUS for DTC P0137 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 5 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the screen indicates EXECUTING or OUT OF CONDITION, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Disconnect the secondary HO2S (sensor 2) 4P connector.
Connect secondary HO2S (Sensor 2) 4P connector terminals No. 1 and No. 2 with a jumper wire.
Turn the ignition switch ON (II).
Check the HO2S B1 S2 OUTPUT VOLTAGE and/or HO2S B2 S2 OUTPUT VOLTAGE* in the DATA LIST with the HDS. Does the voltage stay at 0.12 V or less? YES -Go to step 10 . NO -Go to step 22 .
Turn the ignition switch to LOCK (0).
Remove the jumper wire from the secondary HO2S (Sensor 2) 4P connector.
Turn the ignition switch to ON (II).
Check the HO2S B1 S2 OUTPUT VOLTAGE and/or HO2S B2 S2 OUTPUT VOLTAGE* in the DATA LIST with the HDS. Is there about 5.0 V? YES -Go to step 14 . NO -Go to step 18 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C23 (C36)* and body ground. Is there continuity? YES -Repair short in the wire between the PCM (C23 (C36)*) and secondary HO2S (Sensor 2), then go to step 24 . NO -Go to step 31 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B25 (B16)* and body ground. Is there continuity? YES -Repair short in the wire between the PCM (B25 (B16)*) and secondary HO2S (Sensor 2), then go to step 24 . NO -Go to step 31 .
Turn the ignition switch to LOCK (0).
Replace secondary HO2S (Sensor 2) (see «SECONDARY HO2S REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__secondary-ho2s-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine, and let it idle without load (in P or N) until the radiator fan comes on.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0137 and/or P0157* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . NO -Go to step 30 .
Monitor the OBD STATUS for DTC P0137 and/or P0157* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 29 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . If the screen indicates EXECUTING or OUT OF CONDITION, keep idling until a result comes on.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle without load (in P or N) until the radiator fan comes on.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0137 and/or P0157* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 33 . If the PCM was substituted, go to step 1 . NO -Go to step 35 .
Monitor the OBD STATUS for DTC P0137 and/or P0157* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 34 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 33 . If the PCM was substituted; go to step 1 . If the screen indicates EXECUTING or OUT OF CONDITION, keep idling until a result comes on.

DTC P0138: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit High Voltage; DTC P0158: Front Secondary HO2S (Bank 2, Sensor 2) Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general, troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). Information marked with an asterisk (*) applies to the front bank (Bank 2).

Scheme 106

Scheme 106: DTC P0138: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit High Voltage; DTC P0158: Front Secondary H

Scheme 107

Scheme 108

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Check the HO2S B1 S2 OUTPUT VOLTAGE and/or HO2S B2 S2 OUTPUT VOLTAGE* in the DATA LIST with the HDS. Does the voltage stay at 1.27 V or more? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the secondary HO2S (Sensor 2) 4P connector.
Connect secondary HO2S (Sensor 2) 4P connector terminals No. 1 and No. 2 with a jumper wire.
Turn the ignition switch to ON (II).
Check the HO2S B1 S2 OUTPUT VOLTAGE and/or HO2S B2 S2 OUTPUT VOLTAGE* in the DATA LIST with the HDS. Does the voltage stay at 1.27 V or more? YES -Go to step 10 . NO -Go to step 19 .
Turn the ignition switch to LOCK (0).
Remove the jumper wire from the secondary HO2S (Sensor 2) 4P connector.
Connect secondary HO2S (Sensor 2) 4P connector terminal No. 1 to body ground with a jumper wire.
Turn the ignition switch to ON (II).
Check the HO2S B1 S2 OUTPUT VOLTAGE and/or HO2S B2 S2 OUTPUT VOLTAGE* in the DATA LIST with the HDS. Does the voltage stay at 1.27 V or more? YES -Go to step 15 . NO -Repair open in the wire between the PCM (C23 (C36)*) and secondary HO2S (Sensor 2), then go to step 21 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B25 (B16)* and body ground. Is there continuity? YES -Go to step 29 . NO -Repair open in the wire between the PCM (B25 (B16)*) and secondary HO2S (Sensor 2), then go to step 21 .
Turn the ignition switch to LOCK (0).
Replace secondary HO2S (Sensor 2) (see «SECONDARY HO2S REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__secondary-ho2s-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine, and let it idle without load (in P or N) until the radiator fan comes on.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Engine speed between 1,500-3,000 rpm Drive 1 minute or more
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0138 and/or P0158* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . NO -Go to step 28 .
Monitor the OBD STATUS for DTC P0138 and/or P0158* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 27 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 25 .
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Engine speed between 1,500-3,000 rpm Drive 1 minute or more
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0138 and/or P0158* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 31 . If the PCM was substituted, go to step 1 . NO -Go to step 34 .
Monitor the OBD STATUS for DTC P0138 and/or P0158* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 33 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 31 . If the PCM was substituted, go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 31 .

DTC P0139: Rear Secondary HO2S (Bank 1, Sensor 2) Slow Response; DTC P0159: Front Secondary HO2S (Bank 2, Sensor 2) Slow Response

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Drive at a steady speed between 55-75 mph (88-120 km/h) for 1 minute, then decelerate (with the throttle fully closed) for 10 seconds.
Monitor the OBD STATUS for DTC P0139 and/or P0159* in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 6 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 3 and recheck.
Turn the ignition switch to LOCK (0).
Replace secondary HO2S (Sensor 2) (see «SECONDARY HO2S REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__secondary-ho2s-replacement) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine, and let it idle without load (in P or N) until the radiator fan comes on.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Drive at a steady speed between 55-75 mph (88-120 km/h) for 1 minute, then decelerate (with the throttle fully closed) for 10 seconds.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0139 and/or P0159* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . NO -Go to step 14 .
Monitor the OBD STATUS for DTC P0139 and/or P0159* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 13 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 11 .

DTC P0141: Rear Secondary HO2S (Bank 1, Sensor 2) Heater Circuit Malfunction; DTC P0161: Front Secondary HO2S (Bank 2, Sensor 2) Heater Circuit Malfunction

Scheme 109

Scheme 109: DTC P0141: Rear Secondary HO2S (Bank 1, Sensor 2) Heater Circuit Malfunction; DTC P0161: Front Secon

Scheme 110

Scheme 111

Scheme 112

Scheme 113

Scheme 114

Scheme 115

Scheme 116

Scheme 117

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0141 and/or P0161* indicated? YES -Go to step 5 . NO -Intermittent failure, the systems is OK at this time. Check for poor connections or loose terminals at secondary HO2S (Sensor 2), the PGM-FI subrelay, and the PCM.
Turn the ignition switch to LOCK (0).
Check the No. 14 Fl SUB (15 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Go to step 7 . NO -Go to step 19 .
Remove the PGM-FI subrelay (A) from the under-hood fuse/relay box.
Test the PGM-FI subrelay (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Is the relay OK? YES -Go to step 9 . NO -Replace the PGM-FI subrelay, then go to step 25 .
Disconnect the secondary HO2S (Sensor 2) 4P connector.
At the sensor side, measure the resistance between secondary HO2S (Sensor 2) 4P connector terminals No. 3 and No. 4. Is there 5.4-7.3 ohms at room temperature? YES -Go to step 11 . NO -Go to step 24 .
At the sensor side, check for continuity between body ground and secondary HO2S (Sensor 2) 4P connector terminals No. 3 and No. 4 individually. Is there continuity? YES -Go to step 24 . NO -Go to step 12 .
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C5 (C7)* and body ground. Is there continuity? YES -Repair short in the wire between the PCM (C5 (C7)*) and secondary HO2S (Sensor 2), then go to step 25 . NO -Go to step 15 .
Check for continuity between secondary HO2S (Sensor 2) 4P connector terminal No. 3 and PCM connector C5 (C7)*. Is there continuity? YES -Go to step 16 . NO -Repair open in the wire between the PCM (C5 (C7)*) and secondary HO2S (Sensor 2), then go to step 25 .
Check for continuity between secondary HO2S (Sensor 2) 4P connector terminal No. 4 and PGM-FI subrelay 4P connector terminal No. 2. Is there continuity? YES -Go to step 17 . NO -Repair open in the wire between secondary HO2S (Sensor 2) and the PGM-FI subrelay, then go to step 25 .
Disconnect PCM connector A (49P).
Check for continuity between PGM-FI subrelay 4P connector terminal No. 3 and PCM connector terminal A40. Is there continuity? YES -Go to step 31 . NO -Repair open in the wire between the PGM-FI subrelay, and the PCM (A40), then go to step 25 .
Remove the PGM-FI subrelay (A) from the under-hood fuse/relay box.
Disconnect the front and rear secondary HO2S (Sensor 2) 4P connectors.
Disconnect the front and rear A/F sensor (Sensor 1)6P connectors.
Disconnect the EVAP canister vent shut valve 2P connector.
Check for continuity between secondary HO2S (Sensor 2) 4P connector terminal No. 4 and body ground. Is there continuity? YES -Repair short in the wire between the PGM-FI subrelay and secondary HO2S (Sensor 2), then go to step 25 . NO -Check the under-hood fuse/relay box, and replace it if needed (see «REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-hood-fuserelay-box-v6__removal-and-installation) ). Also replace the No. 14 Fl SUB (15 A) fuse, then go to step 25 .
Replace secondary HO2S (Sensor 2) (see «SECONDARY HO2S REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__secondary-ho2s-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0141 and/or P0161* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2), the PGM-FI subrelay, and the PCM, then go to step 1 . NO -Go to step 30 .
Monitor the OBD STATUS for DTC P0141 and/or P0161* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 29 , go to the indicated DTC's troubleshooting NO -If the screen indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2), the PGM-FI subrelay, and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0141 and/or P0161* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2), the PGM-FI subrelay, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 33 . If the PCM was substituted, go to step 1 . NO -Go to step 35 .
Monitor the OBD STATUS for DTC P0141 and/or P0161* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 34 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2), the PGM-FI subrelay, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 33 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P0171: Rear Bank (Bank 1) Fuel System Too Lean; DTC P0172: Rear Bank (Bank 1) Fuel System Too Rich; DTC P0174: Front Bank (Bank 2) Fuel System Too Lean; DTC P0175: Front Bank (Bank 2) Fuel System Too Rich

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). Poor fuel quality can also cause DTC P0171/P0174. If any of the DTCs listed below are stored at the same time as DTC P0171, P0172, P0174, and/or P0175, troubleshoot those DTCs first, then recheck for P0171, P0172, P0174, and/or P0175. P0101, P0102, P0103: MAF sensor P0107, P0108, P1128, P1129: MAP sensor P0133, P0153, P1172, P1174, P2195, P2197, P2237, P2238, P2240, P2241, P2243, P2245, P2247, P2249, P2251, P2252, P2254, P2255, P2A00, P2A03: A/F sensor (Sensor 1) P0134, P0135, P0154, P0155: A/F sensor (Sensor 1) heater P0137, P0138, P0139, P0157, P0158, P0159: Secondary HO2S (Sensor 2) P0141, P0161: Secondary HO2S (Sensor 2) heater P0401, P0404, P0406, P2413: EGR system P2646, P2647, P2648, P2649: VTEC system P2279: Intake air leakage

Check the fuel pressure (see «FUEL PRESSURE TEST»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6__fuel-pressure-test) ). Is the fuel pressure OK? YES - DTC P0171 and/or P0174 indicated: Go to step 2. DTC P0172 and/or P0175 indicated: Go to step 3 . NO -Check these items: If the pressure is too high, replace the fuel pressure regulator (see «FUEL PRESSURE REGULATOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6) ), then go to step 2. If the pressure is too low, check the fuel pump, the fuel pressure regulator, the fuel filter, and the fuel lines for restrictions, then go to step 6 .
Check for vacuum leaks at these parts: PCV valve PCV hose EVAP canister purge valve Throttle body Intake body Intake manifold Brake booster Brake booster hose Air intake duct
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Check under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in N All electrical loads off
Monitor the ENGINE SPEED in the DATA LIST with the HDS. Raise and hold the engine speed at 2,500 rpm. While holding the rpm steady, check the MAF SENSOR in the DATA LIST. Is there about 11.0-15.5 gm/s? YES -Check the engine valve clearances, and adjust them if needed (see «VALVE CLEARANCE ADJUSTMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-v6__valve-clearance-adjustment) ). If the valve clearances are OK, replace the injectors (see «INJECTOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 6 . NO -Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 6 .
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Drive at a steady speed between 15-75 mph (24-120 km/h) for 15 minutes. NOTE: DTC P0171, P0172, P0174, and/or P0175 may take up to 80 minutes of test driving to set. Using the HDS, monitor the short term fuel trim (ST FUEL TRIM). If the ST FUEL TRIM stays within 0.8-1.21, there is no problem at this time.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0171, P0172, P0174, or P0175 Indicated? YES -Go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0300: Random Misfire and Any Combination of the Following:; DTC P0301: No. 1 Cylinder Misfire Detected; DTC P0302: No. 2 Cylinder Misfire Detected; DTC P0303: No. 3 Cylinder Misfire Detected; DTC P0304: No. 4 Cylinder Misfire Detected; DTC P0305: No. 5 Cylinder Misfire Detected; DTC P0306: No. 6 Cylinder Misfire Detected

Special Tools Required

Pressure Gauge Adapter 07NAJ-P07010A
A/T Low Pressure Gauge w/Panel 07406-0070301
A/T Pressure Test Hose 07AAJ-PY4A100
A/T Pressure Adapter 07MAJ-PY40120
Oil Pressure Hose 07ZAJ-S5AA200

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If the misfire is frequent enough to trigger detection of increased emissions during two consecutive driving cycles, the MIL will come on, and DTC P0300 (and some combination of P0301 through P0306) will be stored. If the misfire is frequent enough to damage the catalyst, the MIL will blink whenever the misfire occurs, and DTC P0300 (and some combination of P0301 through P0306) will be stored. When the misfire stops, the MIL will remain on. Troubleshoot the following DTCs first, if any of them were stored along with the random misfire DTC(s) (because parts can sometimes fail without setting DTCs you should also do a physical inspection of the systems listed below): P0101, P0102, P0103: MAF sensor P0107, P0108, P1128, P1129: MAP sensor P0171, P0172, P0174, P0175: Fuel system P0335, P0339: CKP sensor P0506, P0507: Idle control system P0365, P0369: CMP sensor P0401, P0404, P0406, P2413: EGR system P2646, P2647, P2648, P2649: VTEC system

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, and let it idle without load (in P or N).
Monitor the OBD STATUS for DTC P0301, P0302, P0303, P0304, P0305, or P0306 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 9 . NO -If the screen indicates PASSED, go to step 5 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, wait for several minutes, then recheck.
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 9 . NO -Go to step 6 .
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) ECT SENSOR 1 APP SENSOR
Monitor the OBD STATUS for DTC P0301, P0302, P0303, P0304, P0305, or P0306 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 9 . NO -If the screen indicates PASSED, go to step 8 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 6 and recheck.
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 9 . NO -Intermittent failure, the system is OK at this time.
Turn the ignition switch to LOCK (0).
Check the fuel quality. Is the quality good? YES -Go to step 11 . NO -Drain the fuel tank, and fill it with known-good fuel, then go to step 20 .
Inspect the spark plugs (see «SPARK PLUG INSPECTION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-v6) ). If the spark plugs are fouled or worn, replace them.
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) ECT SENSOR 1 APP SENSOR
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 14 . NO -Go to step 20 .
Check the fuel pressure (see «FUEL PRESSURE TEST»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6__fuel-pressure-test) ). Is the fuel pressure OK? YES -Go to step 15 . NO - If the pressure is too high, replace the fuel pressure regulator (see «FUEL PRESSURE REGULATOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6) ), then go to step 20 . If the pressure is too low, check the fuel pump, the fuel feed lines, and the fuel filter. If they are OK, replace the fuel pressure regulator (see «FUEL PRESSURE REGULATOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6) ), then go to step 20 .
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Check under conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in N All electrical loads off
Monitor the ENGINE SPEED in the DATA LIST with the HDS. Raise and hold the engine speed at 2,500 rpm. While holding the rpm steady, check the MAF SENSOR in the DATA LIST. Is there about 11.0-15.5 gm/s? YES -Go to step 19 . NO -Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 20 .
Turn the ignition switch to LOCK (0).
Do the VTEC rocker arm test (see «VTEC ROCKER ARM TEST»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-v6__vtec-rocker-arm-test) ). Does the engine pass the VTEC rocker arm test? YES -Replace the injectors (see «Injector Replacement»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 20. NO -Repair or replace the VTEC rocker arm, then go to step 20.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) ECT SENSOR 1 APP SENSOR
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0300 and any combination of DTC P0301, P0302, P0303, P0304, P0305, or P0306 indicated? YES -Check for poor connections or loose terminals at the ignition coils, the injectors, and the PCM, then go to the DTC P0301, P0302, P0303, P0304, P0305, or P0306 troubleshooting (see «DTC P0301: NO. 1 CYLINDER MISFIRE DETECTED; DTC P0302: NO. 2 CYLINDER MISFIRE DETECTED; DTC P0303: NO. 3 CYLINDER MISFIRE DETECTED; DTC P0304: NO. 4 CYLINDER MISFIRE DETECTED; DTC P0305: NO. 5 CYLINDER MISFIRE DETECTED; DTC P0306: NO. 6 CYLINDER MISFIRE DETECTED»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dtc-p0301-no-1-cylinder-misfire) ). NO -Go to step 26 .
Monitor the OBD STATUS for DTC P0301, P0302, P0303, P0304, P0305, or P0306 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connection or loose terminals at the ignition coils, the injectors, and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 24 .

DTC P0301: No. 1 Cylinder Misfire Detected; DTC P0302: No. 2 Cylinder Misfire Detected; DTC P0303: No. 3 Cylinder Misfire Detected; DTC P0304: No. 4 Cylinder Misfire Detected; DTC P0305: No. 5 Cylinder Misfire Detected; DTC P0306: No. 6 Cylinder Misfire Detected

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 118

Scheme 118: DTC P0301: No. 1 Cylinder Misfire Detected; DTC P0302: No. 2 Cylinder Misfire Detected; DTC P0303: N

Scheme 119

Scheme 120

Scheme 121

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, and let it idle without load for 2 minutes (in P or N).
Monitor the OBD STATUS for DTC P0301, P0302, P0303, P0304, P0305, or P0306 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 9 . NO -If the screen indicates PASSED, go to step 5 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, wait for several minutes, and recheck.
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 9 . NO -Go to step 6 .
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) GEAR POSITION ECT SENSOR 1
Monitor the OBD STATUS for DTC P0301, P0302, P0303, P0304, P0305, or P0306 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 9 . NO -If the screen indicates PASSED, go to step 8 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 6 .
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 9 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals in the fuel system and the ignition system.
Turn the ignition switch to LOCK (0).
Exchange the ignition coil from the problem cylinder with one from another cylinder.
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) GEAR POSITION ECT SENSOR 1
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 13 . NO -Intermittent failure due to poor contact at the ignition coil connector (no misfire at this time). Make sure that the ignition coil connectors are secure.
Determine which cylinder had the misfire. Does the misfire occur in the cylinder where the ignition coil was moved? YES -Replace the faulty ignition coil (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-v6) ), then go to step 40 . NO -Go to step 14 .
Turn the ignition switch to LOCK (0).
Exchange the spark plug from the problem cylinder with one from another cylinder.
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) GEAR POSITION ECT SENSOR 1
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 18 . NO -Intermittent failure due to spark plug fouling (no misfire at this time).
Determine which cylinder had the misfire. Does the misfire occur in the cylinder where the spark plug was moved? YES -Replace the faulty spark plug, then go to step 40 . NO -Go to step 19 .
Turn the ignition switch to LOCK (0).
Disconnect the injector 2P connector from the problem cylinder.
Turn the ignition switch to ON (II).
Measure the voltage between injector 2P connector terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 23. NO -Repair an open in the wire between the injector and PGM-FI main relay 1, then go to step 40.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between body ground and the appropriate PCM connector terminal (see table). PCM CONNECTOR TERMINAL REFERENCE CHART PROBLEM CYLINDER DTC PCM TERMINAL WIRE COLOR No. 1 P0301 B4 BRN No. 2 P0302 B8 RED No. 3 P0303 B7 BLU No. 4 P0304 B6 YEL No. 5 P0305 B5 BLK/RED No. 6 P0306 B9 WHT/BLU Is there battery voltage? YES -Go to step 40 . NO -Go to step 27.
Check for continuity between body ground and the appropriate PCM connector terminal (see table). PCM CONNECTOR TERMINAL REFERENCE CHART PROBLEM CYLINDER DTC PCM TERMINAL WIRE COLOR No. 1 P0301 B4 BRN No. 2 P0302 B8 RED No. 3 P0303 B7 BLU No. 4 P0304 B6 YEL No. 5 P0305 B5 BLK/RED No. 6 P0306 B9 WHT/BLU Is there continuity? YES -Check for poor connections or loose terminals at the injector and PGM-FI main relay 1, then go to step 28. NO -Repair an open in the wire between the PCM and the injector, then go to step 40 .
At the injector side, measure the resistance between injector 2P connector terminals No. 1 and No. 2. Is there 10-13 ohms at room temperature? YES -Go to step 29 . NO -Replace the injector (see «INJECTOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 40 .
Exchange the injector from the problem cylinder with the one from another cylinder. Also check the injector fuel inlet screen for debris, and clean it if needed.
Reconnect all connectors, and install the intake manifold (see «INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ).
Turn the ignition switch to ON (II).
Clear the DTCs with the HDS.
Start the engine, and let it idle without load (in P or N) for 2 minutes.
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) GEAR POSITION ECT SENSOR 1
Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE in the DATA LIST for 10 minutes with the HDS. Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE, and/or CYL6 MISFIRE show misfire counts? YES -Go to step 36 . NO -Intermittent failure due to poor contact in the injector connector (no misfire at this time). Check for poor connections or loose terminals at the injector.
Determine which cylinder had the misfire. Does the misfire occur in the cylinder where the injector was moved? YES -Replace the faulty injector (see «INJECTOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 40 . NO -Go to step 37 .
Turn the ignition switch to LOCK (0).
Do an engine compression and a cylinder leakdown test (see «ENGINE COMPRESSION INSPECTION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-v6__engine-compression-inspection) ). Did the engine pass both tests? YES -Go to step 39 . NO -Repair the engine, then go to step 40 .
Do the VTEC rocker arm test (see «VTEC ROCKER ARM TEST»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-v6__vtec-rocker-arm-test) ). Did the engine pass the test? YES -Go to step 48 . NO -Repair the VTEC rocker arm, then go to step 40 .
Reconnect all connectors.
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) GEAR POSITION ECT SENSOR 1
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0301, P0302, P0303, P0304, P0305, or P0306 indicated? YES -Check for poor connections or loose terminals at the ignition coils, the injectors, and the PCM, then go to troubleshooting DTC P0300, P0301, P0302, P0303, P0304, P0305, or P0306 (see «DTC P0300: RANDOM MISFIRE AND ANY COMBINATION OF THE FOLLOWING:; DTC P0301: NO. 1 CYLINDER MISFIRE DETECTED; DTC P0302: NO. 2 CYLINDER MISFIRE DETECTED; DTC P0303: NO. 3 CYLINDER MISFIRE DETECTED; DTC P0304: NO. 4 CYLINDER MISFIRE DETECTED; DTC P0305: NO. 5 CYLINDER MISFIRE DETECTED; DTC P0306: NO. 6 CYLINDER MISFIRE DETECTED»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dtc-p0300-random-misfire-and-any) ). NO -Go to step 46 .
Monitor the OBD STATUS for DTC P0301, P0302, P0303, P0304, P0305, or P0306 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 45 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the ignition coils, the injectors, and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 44 .
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED REL TP SENSOR CLV (calculated load value) GEAR POSITION ECT SENSOR 1
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0301, P0302, P0303, P0304, P0305, or P0306 indicated? YES -Check for poor connections or loose terminals at the ignition coils, the injectors, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 49 . If the PCM was substituted, go to step 1 . NO -Go to step 51 .
Monitor the OBD STATUS for DTC P0301, P0302, P0303, P0304, P0305, or P0306 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 50 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the ignition coils, the injectors, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 49 . If the PCM was substituted, go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 49 .

DTC P0325: Knock Sensor Circuit Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 122

Scheme 122: DTC P0325: Knock Sensor Circuit Malfunction

Scheme 123

Scheme 124

Scheme 125

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Hold the engine speed at 3,000-4,000 rpm for at least 10 seconds.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0325 indicated? YES -Go to step 6 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the knock sensor and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the knock sensor subharness (engine wire harness C104) 1P connector.
Disconnect PCM connector C (49P).
Check for continuity between PCM connector terminal C47 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (C47) and the knock sensor subharness, then go to step 20 . NO -Go to step 11 .
Connect the engine wire harness C104 1P connector terminal to body ground with a jumper wire.
Check for continuity between PCM connector terminal C47 and body ground. Is there continuity? YES -Go to step 13 . NO -Repair open in the wire between the PCM (C47) and the knock sensor subharness, then go to step 20 .
Remove the jumper wire from the engine wire harness.
Remove the intake manifold (see «REMOVAL»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ), and the injector base (see «INJECTOR BASE REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ).
Disconnect the knock sensor 1P connector.
Check for continuity between the knock sensor 1P connector terminal and body ground. Is there continuity? YES -Repair short in the knock sensor subharness, then go to step 19 . NO -Go to step 17 .
Check for an open in the knock sensor subharness. Is the harness OK? YES -Go to step 18 . NO -Repair open in the knock sensor subharness, then go to step 19 .
Replace the knock sensor (see «KNOCK SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Install the injector base (see «INJECTOR BASE REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ), and the intake manifold (see «INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Hold the engine speed at 3,000-4,000 rpm for at least 10 seconds.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0325 indicated? YES -Check for poor connections or loose terminals at the knock sensor and the PCM, then go to step 27 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P0325 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the knock sensor and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 24 .
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Hold the engine speed at 3,000-4,000 rpm for at least 10 seconds.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0325 indicated? YES -Check for poor connections or loose terminals at the knock sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 28 . If the PCM was substituted, go to step 1 . NO -Go to step 31 .
Monitor the OBD STATUS for DTC P0325 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 30 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the knock sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 28 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, go to step 28 .

DTC P0335: CKP Sensor No Signal

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 126

Scheme 126: DTC P0335: CKP Sensor No Signal

Scheme 127

Scheme 128

Scheme 129

Scheme 130

Scheme 131

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0335 indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CKP sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the CKP sensor 3P connector.
Turn the ignition switch to ON (II).
Measure the voltage between CKP sensor 3P connector terminal No. 3 and body ground. Is there battery voltage? YES -Go to step 9 . NO -Repair open in the wire between the CKP sensor and PGM-FI main relay 1, then go to step 19 .
Measure the voltage between CKP sensor 3P connector terminal No. 1 and body ground. Is there about 5 V? YES -Go to step 10 . NO -Go to step 11 .
Measure the voltage between CKP sensor 3P connector terminals No. 2 and No. 3. Is there battery voltage? YES -Go to step 17 . NO -Repair open in the wire between the CKP sensor and G101 (see «KNOCK SENSOR SUBHARNESS»(/acura/tsx/ii-2008-2014/remont/body-electrical/#connectors-and-harnesses-v6__knock-sensor-subharness) ), then go to step 19 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B45 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (B45) and the CKP sensor, then go to step 19 . NO -Go to step 15 .
Connect CKP sensor 3P connector terminal No. 1 to body ground with a jumper wire.
Check for continuity between PCM connector terminal B45 and body ground. Is there continuity? YES -Go to step 26 . NO -Repair open in the wire between the PCM (B45) and the CKP sensor, then go to step 19 .
Turn the ignition switch to LOCK (0).
Replace the CKP sensor (see «CMP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0335 indicated? YES -Check for poor connections or loose terminals at the CKP sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0335 indicated? YES -Check for poor connections or loose terminals at the CKP sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0339: CKP Sensor Circuit Intermittent Interruption

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, and let it idle for 10 seconds.
Check the CKP NOISE in the DATA LIST with the HDS. Are 0 counts indicated? YES -Go to step 7 . NO -If the HDS indicates PASSED, go to step 5 . If the HDS indicates NOT COMPLETED, keep idling until a result comes on.
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED
Monitor the OBD STATUS for DTC P0339 in the DTCs MENU with the HDS. Does the HDS indicate FAILED? YES -Go to step 7 . NO -If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CKP sensor and the PCM. If the HDS indicates NOT COMPLETED, go to step 5 and recheck.
Check for poor connections or loose terminals at these locations: CKP sensor PCM Engine ground Body ground Are the connections and terminals OK? YES -Go to step 8 . NO -Repair the connections or terminals, then go to step 11 .
Remove the oil pan (see «OIL PAN REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-block-v6) ), and check for damage to the CKP pulse plate. Is the pulse plate damaged? YES -Replace the CKP pulse plate, then go to step 11 . NO -Go to step 9 .
Turn the ignition switch to LOCK (0).
Replace the CKP sensor (see «CMP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Start the engine, and let it idle for 10 seconds.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0339 indicated? YES -Check for poor connections or loose terminals at the CKP sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0351: No. 1 Cylinder Ignition Coil Circuit Malfunction; DTC P0352: No. 2 Cylinder Ignition Coil Circuit Malfunction; DTC P0353: No. 3 Cylinder Ignition Coil Circuit Malfunction; DTC P0354: No. 4 Cylinder Ignition Coil Circuit Malfunction; DTC P0355: No. 5 Cylinder Ignition Coil Circuit Malfunction; DTC P0356: No. 6 Cylinder Ignition Coil Circuit Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 132

Scheme 132: DTC P0351: No. 1 Cylinder Ignition Coil Circuit Malfunction; DTC P0352: No. 2 Cylinder Ignition Coil

Scheme 133

Scheme 134

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Scheme 139

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0351, P0352, P0353, P0354, P0355, and/or P0356 indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the ignition coil(s) and the PCM.
Turn the ignition switch to LOCK (0).
Exchange the ignition coil from the problem cylinder with one from another cylinder.
Start the engine.
Check for Pending or Confirmed DTCs with the HDS. Is an ignition coil DTC indicated at the exchanged cylinder? YES -Replace the faulty ignition coil (see «IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-v6) ), then go to step 27 . NO -Go to step 9 .
Turn the ignition switch to LOCK (0).
Check the No. 13 IG COIL (15 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Go to step 11 . NO -Go to step 13 .
Remove the ignition coil relay (A) from the under-hood fuse/relay box.
Test the ignition coil relay (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Is the relay OK? YES -Go to step 16 . NO -Replace the ignition coil relay, then go to step 26 .
Remove the ignition coil relay (A) from the under-hood fuse/relay box.
Disconnect all ignition coil 3P connectors.
Check for continuity between No. 1 ignition coil 3P connector terminal No. 3 and body ground. Is there continuity? YES -Repair short in the wire between the ignition coils and the ignition coil relay. Also replace the No. 13 IG COIL (15 A) fuse, then go to step 26 . NO -Check the under-hood fuse/relay box, and replace it if needed (see «REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-hood-fuserelay-box-v6__removal-and-installation) ), then go to step 26 .
Reinstall the ignition coil relay.
Disconnect the ignition coil 3P connector from the problem cylinder.
Turn the ignition switch to ON (II).
Measure the voltage between ignition coil 3P connector terminal No. 3 of the problem cylinder and body ground (see table). DTC REFERENCE CHART PROBLEM CYLINDER DTC No. 1 P0351 No. 2 P0352 No. 3 P0353 No. 4 P0354 No. 5 P0355 No. 6 P0356 Is there battery voltage? YES -Go to step 20 . NO -Repair open in the wire between the ignition coil and the ignition coil relay, then go to step 26 .
Turn the ignition switch to LOCK (0).
Check for continuity between ignition coil 3P connector terminal No. 2 of the problem cylinder and body ground (see table). DTC REFERENCE CHART PROBLEM CYLINDER DTC No. 1 P0351 No. 2 P0352 No. 3 P0353 No. 4 P0354 No. 5 P0355 No. 6 P0356 Is there continuity? YES -Go to step 22 . NO -Repair open in the wire between the ignition coil and G101, then go to step 26 .
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between body ground and the appropriate PCM connector terminal (see table). PCM CONNECTOR TERMINAL REFERENCE CHART PROBLEM CYLINDER DTC PCM TERMINAL WIRE COLOR No. 1 P0351 B29 YEL/GRN No. 2 P0352 B30 BLU/RED No. 3 P0353 B22 WHT/BLU No. 4 P0354 B23 BRN No. 5 P0355 B11 BLK/RED No. 6 P0356 B12 BRN/WHT Is there continuity? YES -Repair short in the wire between the PCM and the ignition coil, then go to step 26 . NO -Go to step 25 .
Check for continuity between appropriate ignition coil 3P connector terminal No. 1 and the PCM connector terminal of the problem cylinder (see table). PCM CONNECTOR TERMINAL REFERENCE CHART PROBLEM CYLINDER DTC PCM TERMINAL WIRE COLOR No. 1 P0351 B29 YEL/GRN No. 2 P0352 B30 BLU/RED No. 3 P0353 B22 WHT/BLU No. 4 P0354 B23 BRN No. 5 P0355 B11 BLK/RED No. 6 P0356 B12 BRN/WHT Is there continuity? YES -Go to step 32 . NO -Repair open in the wire between the PCM and the ignition coil, then go to step 26 .
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0351, P0352, P0353, P0354, P0355, and/or P0356 indicated? YES -Check for poor connections or loose terminals at the ignition coil(s) and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0351, P0352, P0353, P0354, P0355, and/or P0356 indicated? YES -Check for poor connections or loose terminals at the ignition coil(s) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM Was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0365: CMP Sensor Circuit No Signal

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 140

Scheme 140: DTC P0365: CMP Sensor Circuit No Signal

Scheme 141

Scheme 142

Scheme 143

Scheme 144

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0365 indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CMP sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the CMP sensor 3P connector.
Turn the ignition switch to ON (II).
Measure the voltage between CMP sensor 3P connector terminal No. 3 and body ground. Is there battery voltage? YES -Go to step 9 . NO -Repair open in the wire between the CMP sensor and PGM-FI main relay 1, then go to step 18 .
Measure the voltage between CMP sensor 3P connector terminal No. 1 and body ground. Is there about 5 V? YES -Go to step 10 . NO -Go to step 11 .
Measure the voltage between CMP sensor 3P connector terminals No. 2 and No. 3. Is there battery voltage? YES -Go to step 16 . NO -Repair open in the wire between the CMP sensor and G101 (see «KNOCK SENSOR SUBHARNESS»(/acura/tsx/ii-2008-2014/remont/body-electrical/#connectors-and-harnesses-v6__knock-sensor-subharness) ), then go to step 18 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B46 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (B46) and the CMP sensor, then go to step 18 . NO -Go to step 15 .
Check for continuity between CMP sensor 3P connector terminal No. 1 and PCM connector terminal B46. Is there continuity? YES -Go to step 23 . NO -Repair open in the wire between the PCM (B46) and the CMP sensor, then go to step 18 .
Turn the ignition switch to LOCK (0).
Replace the CMP sensor (see «CMP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0365 indicated? YES -Check for poor connections or loose terminals at the CMP sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0365 indicated? YES -Check for poor connections or loose terminals at the CMP sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0369: CMP Sensor Circuit Intermittent Interruption

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, and let it idle for 10 seconds.
Check the CMP B NOISE in the DATA LIST with the HDS. Are 0 counts indicated? YES -Go to step 7 . NO -Go to step 5 .
Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters: ENGINE SPEED VEHICLE SPEED
Monitor the OBD STATUS for DTC P0369 in the DTCs MENU with the HDS. Does the HDS indicate FAILED? YES -Go to step 7 . NO -If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CMP sensor and the PCM. If the HDS indicates NOT COMPLETED, go to step 5 and recheck.
Check for poor connections or loose terminals at these locations: CMP sensor PCM Engine ground Body ground Are the connections and terminals OK? YES -Go to step 8 . NO -Repair the connections or the terminals, then go to step 11 .
Check for damage to the front camshaft pulley (CMP pulse plate) (see «CMP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ). Is the pulse plate damaged? YES -Replace the front camshaft pulley (CMP pulse plate), then go to step 11 . NO -Go to step 9 .
Turn the ignition switch to LOCK (0).
Replace the CMP sensor (see «CMP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine, and let it idle for 10 seconds.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0369 indicated? YES -Check for poor connections or loose terminals at the CMP sensor and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P050A: Cold Start Idle Air Control System Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Are any Pending or Confirmed DTCs other than P050A indicated? YES -Go to the indicated DTC's troubleshooting. NO -Go to step 3 .
Check for poor connections or a blockage at the intake air duct. Is it OK? YES -Go to step 4 . NO -Reconnect or repair the intake air duct, then go to step 19 .
Check for damage at the air cleaner housing. Is it OK? YES -Go to step 5 . NO -Replace the air cleaner housing (see «THROTTLE BODY CLEANING»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-cleaning) ), then go to step 19 .
Check for dirt or debris in the air cleaner element. Is it dirty? YES -Replace the air cleaner element or remove the debris (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6) ), then go to step 19 . NO -Go to step 6 .
Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
Clear the DTC with the HDS.
Start the engine, and let it idle for 10 seconds or more.
Monitor the OBD STATUS for DTC P050A in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 10 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body, the MAF sensor/IAT sensor, and the PCM. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 6 .
Do the ETCS TEST in the INSPECTION MENU with the HDS. Is the THROTTLE ACTUATOR CONTROL VALVE normal? YES -Go to step 11 . NO -Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-removalinstallation) ), then go to step 19 .
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
While holding the engine speed at 2,500 rpm for 30 seconds, check the MAF SENSOR in the DATA LIST with the HDS. Is there about 11.0-15.5 gm/s? YES -Go to step 13 . NO -Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 19 .
Turn the ignition switch to LOCK (0).
Allow the engine to cool to the ambient temperature.
Note the ambient temperature.
Turn the ignition switch to ON (II).
Quickly note the value of IAT SENSOR in the DATA LIST with the HDS.
Compare the value of the IAT SENSOR and the ambient temperature. Does the value of the IAT SENSOR differ 5.4°F (3°C) or more from ambient temperature? YES -Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 19 . NO -Check for dirt, carbon, or damage in the throttle bore. If there is dirt or carbon, clean the throttle body (see «THROTTLE BODY CLEANING»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-cleaning) ), then go to step 19. If there is damage in the throttle bore, replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-removalinstallation) ), then go to step 19 .
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
Start the engine, and let it idle for 10 seconds or more.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P050A indicated? YES -Check for poor connections or loose terminals at the throttle body, the MAF sensor/IAT sensor, and the PCM, then go to step 1 . NO -Go to step 25 .
Monitor the OBD STATUS for DTC P050A in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 24 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the throttle body, the MAF sensor/IAT sensor, and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 22 .

DTC P050B: Cold Start Ignition Timing Control System Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Are any Pending or Confirmed DTCs other than P050B indicated? YES -Go to the indicated DTC's troubleshooting. NO -Go to step 3 .
Check for poor connections or a blockage at the intake air duct. Is it OK? YES -Go to step 4 . NO -Correct the problem, then reconnect the intake air duct, and go to step 21 .
Check for damage at the air cleaner housing. Is it OK? YES -Go to step 5 . NO -Replace the air cleaner housing (see «THROTTLE BODY CLEANING»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-cleaning) ), then go to step 21 .
Check for dirt or debris in the air cleaner element. Is it dirty? YES -Replace the air cleaner element or remove the debris (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6) ), then go to step 21 . NO -Go to step 6 .
Let the engine cool until the value of ECT SENSOR 1 is 122°F(50°C) or less.
Clear the DTC with the HDS.
Start the engine, and let it idle for 10 seconds or more.
Monitor the OBD STATUS for DTC P050B in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 10 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the PCM. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 6 .
Inspect the ignition timing (see «IGNITION TIMING INSPECTION»(/acura/tsx/ii-2008-2014/remont/ignition-system/#ignition-system-v6) ). Is the ignition timing OK? YES -Go to step 12 . NO -Go to step 11 .
Check for damage at the CKP sensor (see «CMP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ) and the CKP pulse plate (see «CKP PULSE PLATE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-block-v6) ). Is the CKP sensor and/or the CKP pulse plate damaged? YES -Replace the CKP sensor (see «CMP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ) and/or the CKP pulse plate (see «CKP PULSE PLATE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/mechanical/#engine-block-v6) ), then go to step 21 . NO -Go to step 27 .
Do the ETCS TEST in the INSPECTION MENU with the HDS. Is the THROTTLE ACTUATOR CONTROL VALVE normal? YES -Go to step 13 . NO -Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-removalinstallation) ), then go to step 21 .
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
While holding the engine speed at 2,500 rpm for 30 seconds, check the MAF SENSOR in the DATA LIST with the HDS. Is there about 11.0-15.5 gm/s? YES -Go to step 15 . NO -Replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 .
Turn the ignition switch to LOCK (0).
Allow ECT sensor 1 and ECT sensor 2 to cool to the ambient temperature.
Note the ambient temperature.
Turn the ignition switch to ON (II).
Quickly note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
Compare the value of ECT SENSOR 1 and the ambient temperature, and the value of ECT SENSOR 2 and the ambient temperature individually. Does either sensor differ more than 5.4°F (3°C) from the ambient temperature? YES -Replace the sensor that differed more than 5.4°F (3°C) from the ambient temperature. Refill the cooling system (see «COOLANT CHECK»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ), then go to step 21 . NO -Check and repair any problems with the following items. Repair or replace them if needed, then go to step 21. If all of the items are OK, go to step 28 . Engine compression and cylinder leakdown VTEC system Engine oil A/C system Power steering
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
Start the engine, and let it idle for 10 seconds or more.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P050B indicated? YES -Check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the PCM, then go to step 1 . NO -Go to step 27 .
Monitor the OBD STATUS for DTC P050B in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 26 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 24 .
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
Start the engine, and let it idle for 10 seconds or more.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P050B indicated? YES -Check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 30 . If the PCM was substituted, go to step 1 . NO -Go to step 33 .
Monitor the OBD STATUS for DTC P050B in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 32 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 30 . If the PCM was substituted, go to step 1 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 30 .

DTC P0562: Charging System Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If any high current load accessories are installed, this DTC can be set. If DTC P16BB and/or P16BC is stored at the same time as DTC P0562, troubleshoot DTC P16BB and/or P16BC first, then recheck for DTC P0562. Check for loose terminal on the alternator (+B terminal). If the alternator +B terminal was poor connection or loose terminal, the DTC P0562 will be stored.

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Headlights on high beam
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0562 indicated? YES -Replace the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-v6) ), then go to step 7 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, and check the battery performance (see «BATTERY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#battery-v6__battery-test) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine.
Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Headlights on high beam
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0562 indicated? YES -Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0563: PCM Power Source Circuit Unexpected Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 145

Scheme 145: DTC P0563: PCM Power Source Circuit Unexpected Voltage

Scheme 146

Scheme 147

Scheme 148

Scheme 149

Scheme 150

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0).
Wait 10 seconds.
Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0563 indicated? YES -Go to step 7 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at PGM-FI main relay 1 and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Measure the voltage between PCM connector terminal A6 and body ground. Is there battery voltage? YES -Go to step 13 . NO -Go to step 11 .
Remove PGM-FI main relay 1 (A) from the under-hood fuse/relay box.
Check for continuity between PCM connector terminal A6 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (A6) and PGM-FI main relay 1, then go to step 19 . NO -Go to step 18 .
Reconnect PCM connector A (49P).
Disconnect PCM connector B (49P).
Measure the voltage between PCM connector terminal B3 and body ground. Is there battery voltage? YES -Go to step 16 . NO -Go to step 26 .
Remove PGM-FI main relay 1 (A) from the under-hood fuse/relay box.
Measure the voltage between PCM connector terminal B3 and body ground. Is there battery voltage? YES -Repair short to power in the wire between the PCM (B3) and PGM-FI main relay 1, then go to step 19 . NO -Go to step 18 .
Test PGM-FI main relay 1 (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Is the relay OK? YES -Go to step 26 . NO -Replace PGM-FI main relay 1, then go to step 19 .
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Turn the ignition switch to LOCK (0).
Wait 10 seconds.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0563 indicated? YES -Check for poor connections or loose terminals at PGM-FI main relay 1 and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0563 indicated? YES -Check for poor connections or loose terminals at PGM-FI main relay 1 and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0602: PCM Programming Error

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). This DTC is indicated when an PCM update is not completed. Do not turn the ignition switch to ACC (I) or LOCK (0) while updating the PCM. If you do, the PCM can be damaged.

Do the PCM update procedure (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0602 indicated? YES -Replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). NO -The update is complete.

DTC P060A: PCM Internal Control Module Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P060A indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P060A indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0615: Starter Cut Relay STRLD Circuit Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 151

Scheme 151: DTC P0615: Starter Cut Relay STRLD Circuit Malfunction

Scheme 152

Scheme 153

Scheme 154

Scheme 155

Scheme 156

Scheme 157

Scheme 158

Scheme 159

Scheme 160

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to START (III), for 1 second or more.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0615 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM.
Try to start the engine. Does the engine start? YES -Go to step 6. NO -Go to step 16.
Turn the ignition switch to LOCK (0).
Check the No. 8 STARTER DIAG (7.5 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES -Go to step 8. NO -Replace the fuse, then go to step 31.
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-v6__drivers-dashboard-lower-cover-removalinstallation) ), then remove starter cut relay 1 (A) from the driver's under-dash fuse/relay box.
Connect starter cut relay 1 4P connector terminal No. 1 to body ground with a jumper wire.
Check for continuity between PCM connector terminal A28 and body ground. Is there continuity? YES -Go to step 35. NO -Go to step 13.
Disconnect driver's under-dash fuse/relay box connector G (13P).
Connect driver's under-dash fuse/relay box connector G (13P) terminal No.6 to body ground with a jumper wire. (Scheme 154): Connecting Driver's Under-Dash Fuse/Relay Box Connector G (13P) Terminal No.6 To Body Ground With A Jumper Wire
Check for continuity between PCM connector terminal A28 and body ground. (Scheme 155): Checking For Continuity Between PCM Connector Terminal A28 And Body Ground Is there continuity? YES -Replace the driver's under-dash fuse/relay box; USA models (see «USA MODELS»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-dash-fuserelay-box-v6__usa-models) ), Canada models (see «CANADA MODELS»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-dash-fuserelay-box-v6__canada-models) ), then go to step 30. NO -Repair an open in the wire between the PCM (A28) and the driver's under-dash fuse/relay box, then go to step 30.
Turn the ignition switch to LOCK (0).
Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-v6__drivers-dashboard-undercover-removalinstallation) ), then remove starter cut relay 1 (A) from the driver's under-dash fuse/relay box.
Remove starter cut relay 2 (A) from the under-hood fuse/relay box. (Scheme 157): Removing Starter Cut Relay 2 (A) From Under-Hood Fuse/Relay Box
Connect starter cut relay 1 4P connector terminal No. 4 to body ground with a jumper wire.
Turn the ignition switch to ON (II).
Check the STARTER RELAY CONTROL RETURN in the DATA LIST with the HDS while the ignition switch is in START (III). Is OFF indicated? YES -Go to step 22. NO -Go to step 26.
Remove the jumper wire from the starter cut relay 1 4P connector.
Turn the ignition switch to LOCK (0).
Disconnect the transmission range switch 10P connector (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/automatic-trans/#automatic-transmission-v6) ).
At the switch side, check for continuity between transmission range switch 10P connector terminals No. 1 and No. 6 with the shift lever in N, and then in P. (Scheme 159): Checking For Continuity Between Transmission Range Switch 10P Connector Terminals No. 1 And No. 6 Is there continuity in each shift lever position? YES -Repair an open in the wire between the transmission range switch and starter cut relay 1, starter cut relay 2, or G101 (see «CONNECTOR TO HARNESS INDEX»(/acura/tsx/ii-2008-2014/remont/body-electrical/#connectors-and-harnesses-v6) ), then go to step 30. NO -Replace the transmission range switch, then go to step 30.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A3 and body ground. Is there continuity? YES -Go to step 35. NO -Repair open in the wire between the PCM (A3) and starter cut relay 1, then go to step 30.
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0615 indicated? YES -Check for poor connections or loose terminals at starter cut relay 1 and the PCM, then go to step 1. NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0615 indicated? YES -Check for poor connections or loose terminals at starter cut relay land the PCM, then go to step 1. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1. NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P062F: PCM Internal Control Module Keep Alive Memory (KAM) Error

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Are any Pending or Confirmed DTCs indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0603 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0630: VIN Not Programmed or Mismatch

Turn the ignition switch to ON (II).
Check the VIN with the HDS. Does the HDS show the vehicle's VIN? YES -Go to step 5 . NO -Go to step 3 .
Input the VIN to the PCM with the HDS. Does the screen show COMPLETE? YES -Go to step 5 . NO -Go to step 4 .
Check for DTCs with the HDS. Is DTC P062F indicated? YES -Go to the DTC P062F troubleshooting (see «DTC P062F: PCM INTERNAL CONTROL MODULE KEEP ALIVE MEMORY (KAM) ERROR»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dtc-p062f-pcm-internal-control-module) ). NO -Go to step 9 .
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II), and wait 5 seconds.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0630 indicated? YES -Go to step 9 . NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0630 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0641: Sensor Reference Voltage A Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 161

Scheme 161: DTC P0641: Sensor Reference Voltage A Malfunction

Scheme 162

Scheme 163

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0641 indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the PCM and the connectors of these parts: Throttle body EGR valve Input shaft (mainshaft) speed sensor APP sensor
Turn the ignition switch to LOCK (0).
Disconnect the connectors of these parts: Throttle body EGR valve Input shaft (mainshaft) speed sensor APP sensor
Turn the ignition switch ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0641 indicated? YES -Go to step 10 . NO -Go to step 9 .
Check for Pending or Confirmed DTCs with the HDS while reconnecting these parts, one at a time. Throttle body EGR valve Input shaft (mainshaft) speed sensor APP sensor Is DTC P0641 Indicated? YES -Replace the part that caused the DTC when it was reconnected, then go to step 14 . NO -Check for poor connections or loose terminals at the PCM and the following parts, then go to step 1 . Throttle body EGR valve Input shaft (mainshaft) speed sensor APP sensor
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connectors A (49P), B (49P), and C (49P).
Check for continuity between body ground and PCM connector terminals A24, B18, and C12 individually. Is there continuity? YES -Repair short in the wire between the PCM (A24, B18, or C12) and each part that was disconnected in step 5, then go to step 14 . NO -Go to step 20 .
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0641 indicated? YES -Check for poor connections or loose terminals at the PCM and the following parts, then go to step 1 . Throttle body EGR valve Input shaft (mainshaft) speed sensor APP sensor NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0641 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, check for poor connections or loose terminals at the PCM and the following parts, then go to step 1 . Throttle body EGR valve Input shaft (mainshaft) speed sensor APP sensor NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0651: Sensor Reference Voltage B Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 164

Scheme 164: DTC P0651: Sensor Reference Voltage B Malfunction

Scheme 165

Scheme 166

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0651 indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the PCM and the connectors of these parts: MAP sensor Output shaft (countershaft) speed sensor IMT actuator A/C pressure sensor APP sensor FTP sensor
Turn the ignition switch to LOCK (0).
Disconnect the connectors of these parts: MAP sensor Output shaft (countershaft) speed sensor IMT actuator A/C pressure sensor APP sensor FTP sensor
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0651 indicated? YES -Go to step 10 . NO -Go to step 9 .
Check for Pending or Confirmed DTCs with the HDS while reconnecting these parts, one at a time. MAP sensor Output shaft (countershaft) speed sensor IMT actuator A/C pressure sensor APP sensor FTP sensor Is DTC P0651 indicated? YES -Replace the part that caused the DTC when it was reconnected, then go to step 14 . NO -Check for poor connections or loose terminals at the PCM and the following parts, then go to step 1 . MAP sensor Output shaft (countershaft) speed sensor IMT actuator A/C pressure sensor APP sensor FTP sensor
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connectors A (49P), B (49P), and C (49P).
Check for continuity between body ground and PCM connector terminals A25, B36, and C11 individually. Is there continuity? YES -Repair short in the wire between the PCM (A25, B36, or C11) and each part that was disconnected in step 5 , then go to step 14 . NO -Go to step 20 .
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for DTCs with the HDS. Is DTC P0651 indicated? YES -Check for poor connections or loose terminals at the PCM and the following parts, then go to step 1 . MAP sensor Output shaft (countershaft) speed sensor IMT actuator A/C pressure sensor APP sensor FTP sensor NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0651 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, check for poor connections or loose terminals at the PCM and the following parts, then go to step 1 . MAP sensor Output shaft (countershaft) speed sensor IMT actuator A/C pressure sensor APP sensor FTP sensor NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P0685: PCM Power Control Circuit/Internal Circuit Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If the problem doesn't return after you clear the DTC, or if this DTC is stored intermittently, check for loose terminals at the IGP line connectors before replacing the PCM.

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, and let it idle for 30 seconds.
Turn the ignition switch to LOCK (0).
Start the engine, and let it idle for 30 seconds.
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0685 indicated? YES -Go to step 9 . NO -Intermittent failure, the system is OK at this time.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle for 30 seconds.
Turn the ignition switch to LOCK (0).
Start the engine, and let it idle for 30 seconds.
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P0685 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 10 . If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P1109: BARO Sensor Circuit Out of Range High

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Reset the PCM with the HDS.
Start the engine.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1109 indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1109 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P1116: ECT Sensor 1 Circuit Range/Performance Problem

Check for poor connections or loose terminals at ECT sensor 1 and ECT sensor 2. Are the connections and the terminals OK? YES -Go to step 2 . NO -Repair the connectors or terminals, then go to step 21 .
Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Are DTC P1116 and P2183 indicated at the same time? YES -Go to step 12 . NO -Go to step 4 .
Start the engine, and let it idle for 10 minutes.
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 118°F (48°C) or less indicated? YES -Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Go to step 6 .
Turn the ignition switch to LOCK (0).
Allow ECT sensor 1 to cool to the ambient temperature.
Note the ambient temperature.
Turn the ignition switch to ON (II).
Quickly note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
Compare the value of ECT SENSOR 1 and the ambient temperature. Does the value of ECT SENSOR 1 differ 5.4°F (3°C) or more from ambient temperature? YES -Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM.
Start the engine, and let it idle for 10 minutes.
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 118°F (48°C) or less indicated? YES -Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Go to step 14.
Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 135°F (57°C) or less indicated? YES -Replace ECT sensor 2 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Go to step 15 .
Turn the ignition switch to LOCK (0).
Allow ECT sensor 1 and ECT sensor 2 to cool to the ambient temperature.
Note the ambient temperature.
Turn the ignition switch to ON (II).
Quickly note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
Compare the value of ECT SENSOR 1 and the ambient temperature, and the value of ECT SENSOR 2 and the ambient temperature individually. Does either sensor differ more than 5.4°F (3°C) from the ambient temperature? YES -Replace the sensor that differed more than 5.4°F (3°C) from the ambient temperature. Refill the cooling system (see «COOLANT CHECK»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ), then go to step 21 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1116 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P1128: MAP Sensor Signal Lower Than Expected

Turn the ignition switch to ON (II).
Check the MAP SENSOR in the DATA LIST with the HDS. Is less than 54.1 kPa (16.0 inHg, 406 mmHg) or 1.61 V held for more than 5 seconds? YES -Go to step 7 . NO -Go to step 3 .
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Engine speed about 1,200 rpm or more Transmission in D Vehicle speed about 25 mph (40 km/h) or more under half throttle
Monitor the OBD STATUS for DTC P1128 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 7 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the PCM. If the screen indicates NOT COMPLETED, go to step 4 and recheck.
Turn the ignition switch to LOCK (0).
Replace the MAP sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Engine speed about 1,200 rpm or more Transmission in D Vehicle speed about 25 mph (40 km/h) or more under half throttle
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1128 indicated? YES -Check for poor connections or loose terminals at the MAP sensor and the PCM, then go to step 1 . NO -Go to step 15 .
Monitor the OBD STATUS for DTC P1128 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated instep 14 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the MAP sensor and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 12 .

DTC P1129: MAP Sensor Signal Higher than Expected

Note. Before you troubleshoot, record all freeze data, and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Check for vacuum leaks at these parts: PCV valve PCV hose EVAP canister purge valve Throttle body Intake manifold Brake booster Brake booster hose Are there any vacuum leaks? YES -Repair or replace the part(s) with vacuum leaks, then go to step 9 . NO -Go to step 2 .
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Check the MAP SENSOR in the DATA LIST with the HDS. Is there more than 36.9 kPa (11.0 inHg, 277 mmHg), or 1.14 V held for more than 5 seconds? YES -Go to step 7 . NO -Go to step 4 .
Clear the DTC with the HDS.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in D Engine speed between 1,200-5,900 rpm Drive at a steady speed between 55-75 mph (88-120 km/h) for 10 seconds, then decelerate (with the throttle fully closed) for 5 seconds
Monitor the OBD STATUS for DTC P1129 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 7 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the PCM. If the screen indicates NOT COMPLETED, go to step 5 and recheck.
Turn the ignition switch to LOCK (0).
Replace the MAP sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in D Engine speed between 1,200-5,900 rpm Drive at a steady speed between 55-75 mph (88-120 km/h) for 10 seconds, then decelerate (with the throttle fully closed) for 5 seconds
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1129 indicated? YES -Check for poor connections or loose terminals at the MAP sensor and the PCM, then go to step 1 . NO -Go to step 15 .
Monitor the OBD STATUS for DTC P1129 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 14 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the MAP sensor and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 12 .

DTC P1172: Rear A/F Sensor (Bank 1, Sensor 1) Circuit Out of Range High; DTC P1174: Front A/F Sensor (Bank 2, Sensor 1) Circuit Out of Range High

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Monitor the OBD STATUS for P1172 and/or P1174* in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 5 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 3 and recheck.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1172 and/or P1174* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 12 .
Monitor the OBD STATUS for DTC P1172 and/or P1174* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 11 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates EXECUTING keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 10 .

DTC P1297: ELD Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 167

Scheme 167: DTC P1297: ELD Circuit Low Voltage

Turn the ignition switch to ON (II).
Check the ELD in the DATA LIST with the HDS. Is 72 A or more indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the ELD and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the ELD 3P connector.
Turn the ignition switch to ON (II).
Check the ELD in the DATA LIST with the HDS. Is 72 A or more indicated? YES -Go to step 7 . NO -Go to step 11 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A10 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (A10) and the ELD, then go to step 13 . NO -Go to step 20 .
Turn the ignition switch to LOCK (0).
Replace the ELD (see «KNOCK SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine.
Turn on the headlights.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1297 indicated? YES -Check for poor connections or loose terminals at the ELD and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine.
Turn on the headlights.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1297 indicated? YES -Check for poor connections or loose terminals at the ELD and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 22 . If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P1298: ELD Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 168

Scheme 168: DTC P1298: ELD Circuit High Voltage

Scheme 169

Scheme 170

Start the engine, and let it idle.
Check the ELD in the DATA LIST with the HDS. Is 0.2 A or less indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the ELD and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the ELD 3P connector.
Turn the ignition switch to ON (II).
Measure the voltage between ELD 3P connector terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 7 . NO -Repair open in the wire between the No. 7 ACG (15 A) fuse in the driver's under-dash fuse/relay box and the ELD, then go to step 13 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A10 and ELD 3P connector terminal No. 3. Is there continuity? YES -Go to step 11 . NO -Repair open in the wire between the PCM (A10) and the ELD, then go to step 13 .
Check for continuity between ELD 3P connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 12 . NO -Repair open in the wire between the ELD and G301 (see «LEFT ENGINE COMPARTMENT WIRE HARNESS (ENGINE COMPARTMENT BRANCH)»(/acura/tsx/ii-2008-2014/remont/body-electrical/#connectors-and-harnesses-v6__left-engine-compartment-wire-harness-engine) ), then go to step 13 .
Replace the ELD (see «KNOCK SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1298 indicated? YES -Check for poor connections or loose terminals at the ELD and the PCM, then go to step 17 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1298 indicated? YES -Check for poor connections or loose terminals at the ELD and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P1549: Charging System High Voltage

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check under these conditions: A/C off Headlights off Rear window defogger off
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1549 Indicated? YES -Replace the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-v6) ), then go to step 7 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine.
Check under these conditions: A/C off Headlights off Rear window defogger off
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P1549 indicated? YES -Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P16BB: Alternator B Terminal Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Headlights on high beam Rear window defogger on
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BB indicated? YES -Go to step 7 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, and check the battery performance (see «BATTERY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#battery-v6__battery-test) ).
Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box (+B line). Are the connections and terminals OK? YES -Go to step 8 . NO -Repair the connections or the terminals, then go to step 9 .
Check for an open in the wire between the alternator and the under-hood fuse/relay box at the engine harness. Is the harness OK? YES -Replace the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-v6) ), then go to step 9 . NO -Repair open in the wire between the alternator and the under-hood fuse/relay box, then go to step 9 .
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine.
Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Headlights on high beam Rear window defogger on
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BB indicated? YES -Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P16BC: Alternator FR Terminal Circuit/IGP Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 171

Scheme 171: DTC P16BC: Alternator FR Terminal Circuit/IGP Circuit Low Voltage

Scheme 172

Scheme 173

Check for poor connections or loose terminals at the alternator 4P connector. Are the connections and terminals OK? YES -Go to step 2 . NO -Repair the connections or terminals, then go to step 18 .
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Headlights on high beam Rear window defogger on
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BC indicated? YES -Go to step 8 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator.
Turn the ignition switch to LOCK (0).
Disconnect the alternator 4P connector.
Turn the ignition switch to ON (II).
Measure the voltage between alternator 4P connector terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 12 . NO -Repair open in the wire between the alternator (IG1 line) and the No. 7 ACG (15 A) fuse in the driver's under-dash fuse/relay box, then go to step 17 .
Measure the voltage between alternator 4P connector terminal No. 4 and body ground. Is there about 5 V? YES -Replace the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/charging-system/#charging-system-v6) ), then go to step 17 . NO -Go to step 13 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between alternator 4P connector terminal No. 4 and PCM connector terminal C44. Is there continuity? YES -Go to step 26 . NO -Repair open in the wire between the PCM (C44) and the alternator, then go to step 18 .
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine.
Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Headlights on high beam Rear window defogger on
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BC indicated? YES -Check for poor connections or loose terminals at the alternator and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine.
Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Headlights on high beam Rear window defogger on
Hold the engine speed at 2,000 rpm (in P or N) for 1 minute.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BC indicated? YES -Check for poor connections or loose terminals at the alternator and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 28 . If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P16BD: Starter Cut Relay 2 Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 174

Scheme 174: DTC P16BD: Starter Cut Relay 2 Malfunction

Scheme 175

Scheme 176

Scheme 177

Scheme 178

Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
Clear the DTC with the HDS.
Check the STARTER CUT RELAY in the DATA LIST with the HDS. Is 2.2 V or less indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM.
Try to start engine. Does the engine start? YES -Go to step 5 . NO -Go to step 13 .
Turn the ignition switch to LOCK (0).
Check the No. 8 STARTER DIAG (7.5 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES -Replace starter cut relay 2, then go to step 20 . NO -Go to step 7 .
Remove the blown fuse from the driver's under-dash fuse/relay box.
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between the PCM connector terminal A28 and body ground. Is there continuity? YES -Go to step 11 . NO -Replace the No. 8 STARTER DIAG (7.5 A) fuse, then go to step 25 .
Disconnect driver's under-dash fuse/relay box connector G (13P).
Check for continuity between the PCM connector terminal A28 and the body ground. Is there continuity? YES -Repair short in the wire between the PCM (A28) and the driver's under-dash fuse/relay box. Also replace the No. 8 STARTER DIAG (7.5 A) fuse, then go to step 20 . NO -Replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-dash-fuserelay-box-v6__drivers-under-dash-fuserelay-box-micu-removal) ), then go to step 20 .
Remove the driver's dashboard undercover (see «DRIVER'S POCKET REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-v6) ), then remove starter cut relay 1 (A) from the driver's under-dash fuse/relay box.
Check the STARTER CUT RELAY in the DATA LIST with the HDS. Is 2.2 V or less indicated? YES -Go to step 15 . NO -Replace starter cut relay 1, then go to step 20 .
Remove the starter cut relay 2 (A) from the under-hood fuse/relay box.
Check the STARTER CUT RELAY in the DATA LIST with the HDS. Is 2.2 V or less indicated? YES -Go to step 17 . NO -Replace starter cut relay 2, then go to step 20 .
Turn the ignition switch to LOCK (0).
Disconnect driver's under-dash fuse/relay box connectors F (33P) and G (13P).
Check for continuity between starter cut relay 1 4P connector terminal No. 1 and body ground. Is there continuity? YES -Replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-dash-fuserelay-box-v6__drivers-under-dash-fuserelay-box-micu-removal) ), then go to step 20 . NO -Repair short in the wire between the driver's under-dash fuse/relay box and the under-hood fuse/relay box (starter cut relay 2), then go to step 20 .
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BD indicated? YES -Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BD indicated? YES -Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P16BE: Starter Cut Relay 1 Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 179

Scheme 179: DTC P16BE: Starter Cut Relay 1 Malfunction

Scheme 180

Turn the ignition switch to ON (II).
Clear the DTC with the HDS, and wait 5 seconds.
Check the STARTER CUT RELAY in the DATA LIST with the HDS. Is 3.0 V or more indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM.
Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-v6__drivers-dashboard-lower-cover-removalinstallation) ), then remove starter cut relay 1 (A) from the driver's under-dash fuse/relay box.
Check the STARTER CUT RELAY in the DATA LIST with the HDS. Is 3.0 V or more indicated? YES -Go to step 6 . NO -Replace starter cut relay 1, then go to step 7 .
Measure the voltage between starter cut relay 1 4P connector terminal No. 1 and body ground. Is 3.0 V or more? YES -Repair short to power in the wire between starter cut relay 1, starter cut relay 2, and the PCM, then go to step 7 . NO -Go to step 11 .
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BE indicated? YES -Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BE indicated? YES -Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P16BF: Starter Cut Relay STARTER RELAY Circuit Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 181

Scheme 181: DTC P16BF: Starter Cut Relay STARTER RELAY Circuit Malfunction

Scheme 182

Scheme 183

Scheme 184

Scheme 185

Scheme 186

Turn the ignition switch to ON (II).
Clear the DTC with the HDS, and wait 5 seconds.
Check the STARTER RELAY CONTROL RETURN in the DATA LIST with the HDS. Is OFF indicated? YES -Go to step 4 . NO -Go to step 15 .
Turn the ignition switch to START (III), for 5 seconds or more.
While holding the ignition switch in START (III), check the STARTER RELAY CONTROL RETURN in the DATA LIST with the HDS. Is OFF indicated? YES -Go to step 6 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM.
Turn the ignition switch to LOCK (0).
Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-v6__drivers-dashboard-lower-cover-removalinstallation) ), then remove starter cut relay 1 (A) from the driver's under-dash fuse/relay box.
Remove starter cut relay 2 (A) from the under-hood fuse/relay box.
Test the starter cut relays (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Are the relays OK? YES -Go to step 12 . NO -Replace starter cut relay 1 and/or starter cut relay 2, then go to step 25 .
Remove the IG2 cut relay, and the ACC cut relay from their sockets (see «DASHBOARD»(/acura/tsx/ii-2008-2014/remont/electrical-component-locations/#relay-and-control-unit-locations-v6) ).
Test the IG2 cut relay, and the ACC cut relay (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A3 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (A3) and starter cut relay 1 or starter cut relay 2, then go to step 25 . NO -Go to step 31 .
Turn the ignition switch to LOCK (0).
Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-v6__drivers-dashboard-lower-cover-removalinstallation) ), then remove starter cut relay 1 (A) from the driver's under-dash fuse/relay box.
Remove starter cut relay 2 (A) from the under-hood fuse/relay box.
Test the starter cut relays (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Are the relays OK? YES -Go to step 21 . NO -Replace starter cut relay 1 and/or starter cut relay 2, then go to step 25 .
Remove the IG2 cut relay, and the ACC cut relay from their sockets (see «DASHBOARD»(/acura/tsx/ii-2008-2014/remont/electrical-component-locations/#relay-and-control-unit-locations-v6) ).
Test the IG2 cut relay, and the ACC cut relay (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Are the relays OK? YES -Go to step 21. NO -Replace the IG2 cut relay and/or ACC cut relay, then go to step 25 .
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Turn the ignition switch to ON (II).
Measure the voltage between PCM connector terminal A3 and body ground. Is there 1.0 V or more? YES -Repair short to power in the wire between the PCM (A3) and starter cut relay 1 or starter cut relay 2, then go to step 25 . NO -Go to step 30 .
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BF indicated? YES -Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P16BF indicated? YES -Check for poor connections or loose terminals at starter cut relay 1, starter cut relay 2, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P2183: ECT Sensor 2 Circuit Range/Performance Problem

Check for poor connections or loose terminals at ECT sensor 1 and ECT sensor 2. Are the connections and terminals OK? YES -Go to step 2 . NO -Repair the connections or terminals, then go to step 21 .
Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Are DTC P1116 and P2183 indicated at the same time? YES -Go to step 12 . NO -Go to step 4 .
Start the engine, and let it idle for 10 minutes.
Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 135°F (57°C) or less indicated? YES -Replace ECT sensor 2 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Go to step 6 .
Turn the ignition switch to LOCK (0).
Allow ECT sensor 2 to cool to the ambient temperature.
Note the ambient temperature.
Turn the ignition switch to ON (II).
Quickly note the value of ECT SENSOR 2 in the DATA LIST with the HDS.
Compare the value of ECT SENSOR 2 and the ambient temperature. Does ECT SENSOR 2 differ 5.4°F (3°C) or more from the ambient temperature? YES -Replace ECT sensor 2 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM.
Start the engine, and let it idle for 10 minutes.
Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 118°F (48°C) or less indicated? YES -Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Go to step 14.
Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 135°F (57°C) or less indicated? YES -Replace ECT sensor 2 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 21 . NO -Go to step 15 .
Turn the ignition switch to LOCK (0).
Allow ECT sensor 1 and ECT sensor 2 to cool to the ambient temperature.
Note the ambient temperature.
Turn the ignition switch to ON (II).
Quickly note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
Compare the value of ECT SENSOR 1 and the ambient temperature, and the value of ECT SENSOR 2 and the ambient temperature individually. Does either sensor differ more than 5.4°F (3°C) from the ambient temperature? YES -Replace the sensor that differed more than 5.4°F (3°C) from the ambient temperature. Refill the cooling system (see «COOLANT CHECK»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ), then go to step 21 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2183 indicated? YES -Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P2184: ECT Sensor 2 Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 187

Scheme 187: DTC P2184: ECT Sensor 2 Circuit Low Voltage

Turn the ignition switch to ON (II).
Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 356°F (180°C) or more, or 0.08 V or less indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 2 and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the ECT sensor 2 2P connector.
Turn the ignition switch to ON (II).
Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 356°F (180°C) or more, or 0.08 V or less indicated? YES -Go to step 7 . NO -Go to step 11 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between ECT sensor 2 2P connector terminal No. 1 and body ground. Is there continuity? YES -Repair short in the wire between ECT sensor 2 and the PCM (A21), then go to step 13 . NO -Go to step 18 .
Turn the ignition switch to LOCK (0).
Replace ECT sensor 2 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2184 indicated? YES -Check for poor connections or loose terminals at ECT sensor 2 and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2184 indicated? YES -Check for poor connections or loose terminals at ECT sensor 2 and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P2185: ECT Sensor 2 Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 188

Scheme 188: DTC P2185: ECT Sensor 2 Circuit High Voltage

Scheme 189

Scheme 190

Scheme 191

Turn the ignition switch to ON (II).
Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about -40°F (-40°C) or less, or 4.92 V or more indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 2 and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the ECT sensor 2 2P connector.
Connect ECT sensor 2 2P connector terminals No. 1 and No. 2 with a jumper wire.
Turn the ignition switch to ON (II).
Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about -40°F (-40°C) or less, or 4.92 V or more indicated? YES -Go to step 8 . NO -Go to step 20 .
Turn the ignition switch to LOCK (0).
Remove the jumper wire from the ECT sensor 2 2P connector.
Turn the ignition switch to ON (II).
Measure the voltage between ECT sensor 2 2P connector terminal No. 1 and body ground. Is there about 5 V? YES -Go to step 12 . NO -Go to step 16 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal C15 and ECT sensor 2 2P connector terminal No. 2. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (C15) and ECT sensor 2, then go to step 22 .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A21 and ECT sensor 2 2P connector terminal No. 1. Is there continuity? YES -Go to step 27 . NO -Repair open in the wire between the PCM (A21) and ECT sensor 2, then go to step 22 .
Turn the ignition switch to LOCK (0).
Replace ECT sensor 2 (see «ECT SENSOR 1 REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2185 indicated? YES -Check for poor connections or loose terminals at ECT sensor 2 and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2185 indicated? YES -Check for poor connections or loose terminals at ECT sensor 2 and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P2195: Rear A/F Sensor (Bank 1, Sensor 1) Signal Stuck Lean; DTC P2197: Front A/F Sensor (Bank 2, Sensor 1) Signal Stuck Lean

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). Information marked with an asterisk (*) applies to the front bank (Bank 2). If the vehicle was out of fuel and the engine stalled before this DTC was stored, refuel, and clear the DTC with the HDS. If DTC P2101, P2118, P2135, P2138, P2176, or a combination of P2122 and P2127, P2122 and P2138, or P2127 and P2138 is stored at the same time as DTC P2195 (P2197)*, troubleshoot those DTCs first, then recheck for DTC P2195 (P2197)*.

Check for dirt or debris on the MAF sensor/IAT sensor. Is it dirty? YES -Remove the debris. If needed, replace the MAF sensor/IAT sensor (see «MAP SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ), then go to step 9 . NO -Go to step 2 .
Check the installation of the A/F sensor (Sensor 1). Is the A/F sensor loose or disconnected from the exhaust pipe? YES -Go to step 7 . NO -Go to step 3 .
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, and let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2195 and/or P2197* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 14 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Turn the ignition switch to LOCK (0).
Reinstall the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2195 and/or P2197* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 13 .
Monitor the OBD STATUS for DTC P2195 and/or P2197* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 12 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2195 and/or P2197* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 15 . If the PCM was substituted, go to step 1 . NO -Go to step 17 .
Monitor the OBD STATUS for DTC P2195 and/or P2197* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 16 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 15 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2227: BARO Sensor Circuit Range/Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0107, P0108, P1128, and/or P1129 are stored at the same time as DTC P2227, troubleshoot those DTCs first, then recheck for DTC P2227.

Turn the ignition switch to ON (II), and wait 2 seconds.
Check the BARO SENSOR in the DATA LIST with the HDS. Is about 101 kPa (29.9 inHg, 760 mmHg), or about 2.9 V at sea level indicated? YES -Go to step 3 . NO -Go to step 15 .
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in D Throttle position between 16 and 31 degrees for at least 3 seconds
Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 7 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, go to step 4 and recheck.
Check the intake air system for clogging or the restrictions (foreign material, dirty air cleaner element, etc). Is the intake air system clogged or restricted? YES -Remove the clog or restriction, then go to step 8 . NO -Go to step 15 .
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in D Throttle position between 16 and 31 degrees for at least 3 seconds
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2227 indicated? YES -Check for poor connections or loose terminals at the PCM, then go to step 1 . NO -Go to step 14 .
Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated instep 13 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 11 .
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in D Throttle position between 16 and 31 degrees for at least 3 seconds
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2227 indicated? YES -Check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 16 . If the PCM was substituted, go to step 1 . NO -Go to step 19 .
Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 18 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 16 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, go to step 16 .

DTC P2228: BARO Sensor Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Check the BARO SENSOR in the DATA LIST with the HDS. Is about 53 kPa (15.6 inHg, 397 mmHg), or 1.58 V or less indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2228 indicated? YES -Check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P2229: BARO Sensor Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Check the BARO SENSOR in the DATA LIST with the HDS. Is about 160 kPa (47.2 inHg, 1,200 mmHg), or 4.49 V or more indicated? YES -Go to step 3 . NO -Intermittent failure, the system is OK at this time.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2229 indicated? YES -Check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P2237: Rear A/F Sensor (Bank 1, Sensor 1) IP Circuit High Voltage; DTC P2240: Front A/F Sensor (Bank 2, Sensor 1) IP Circuit High Voltage

Scheme 192

Scheme 192: DTC P2237: Rear A/F Sensor (Bank 1, Sensor 1) IP Circuit High Voltage; DTC P2240: Front A/F Sensor (

Scheme 193

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2237 and/or P2240* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the A/F sensor (Sensor 1) 6P connector.
Disconnect PCM connector B (49P).
Check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 5 and PCM connector terminal B31 (B32)*. Is there continuity? YES -Go to step 10 . NO -Repair open in the wire between the PCM (B31 (B32)*) and the A/F sensor (Sensor 1), then go to step 15 .
Reconnect PCM connector B (49P).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Measure the voltage between A/F sensor (Sensor 1) 6P connector terminal No. 5 and body ground. Is there about 0.2 V or less? YES -Go to step 21 . NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2237 and/or P2240* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 20 .
Monitor the OBD STATUS for DTC P2237 and/or P2240* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 19 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2237 and/or P2240* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P2237 and/or P2240* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2238: Rear A/F Sensor (Bank 1, Sensor 1) IP Circuit Low Voltage; DTC P2241: Front A/F Sensor (Bank 2, Sensor 1) IP Circuit Low Voltage

Scheme 194

Scheme 194: DTC P2238: Rear A/F Sensor (Bank 1, Sensor 1) IP Circuit Low Voltage; DTC P2241: Front A/F Sensor (B

Scheme 195

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2238 and/or P2241* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the A/F sensor (Sensor 1) 6P connector.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B31 (B32)* and body ground. Is there continuity? YES -Repair short in the wire between the PCM (B31 (B32)*) and the A/F sensor (Sensor 1), then go to step 15 . NO -Go to step 10 .
Reconnect PCM connector B (49P).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Measure the voltage between A/F sensor (Sensor 1) 6P connector terminal No. 5 and body ground. Is there about 0.2 V or less? YES -Go to step 21 . NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2238 and/or P2241* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 20 .
Monitor the OBD STATUS for DTC P2238 and/or P2241* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 19 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2238 and/or P2241* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P2238 and/or P2241* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2243: Rear A/F Sensor (Bank 1, Sensor 1) VCENT Circuit High Voltage; DTC P2247: Front A/F Sensor (Bank 2, Sensor 1) VCENT Circuit High Voltage

Scheme 196

Scheme 196: DTC P2243: Rear A/F Sensor (Bank 1, Sensor 1) VCENT Circuit High Voltage; DTC P2247: Front A/F Senso

Scheme 197

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2243 and/or P2247* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the A/F sensor (Sensor 1) 6P connector.
Disconnect PCM connector B (49P).
Check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 6 and PCM connector terminal B15 (B24)*. Is there continuity? YES -Go to step 10 . NO -Repair open in the wire between the PCM (B15 (B24)*) and the A/F sensor (Sensor 1), then go to step 15 .
Reconnect PCM connector B (49P).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Measure the voltage between A/F sensor (Sensor 1) 6P connector terminal No. 6 and body ground. Is there about 0.2 V or less? YES -Go to step 21 . NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2243 and/or P2247* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 20 .
Monitor the OBD STATUS for DTC P2243 and/or P2247* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated instep 19 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. If DTC P2243 and/or P2247* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P2243 and/or P2247* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2245: Rear A/F Sensor (Bank 1, Sensor 1) VCENT Circuit Low Voltage; DTC P2249: Front A/F Sensor (Bank 2, Sensor 1) VCENT Circuit Low Voltage

Scheme 198

Scheme 198: DTC P2245: Rear A/F Sensor (Bank 1, Sensor 1) VCENT Circuit Low Voltage; DTC P2249: Front A/F Sensor

Scheme 199

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2245 and/or P2249* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the A/F sensor (Sensor 1) 6P connector.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B15 (B24)* and body ground. Is there continuity? YES -Repair short in the wire between the PCM (B15 (B24)*) and the A/F sensor (Sensor 1), then go to step 15 . NO -Go to step 10 .
Reconnect PCM connector B (49P).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Measure the voltage between A/F sensor (Sensor 1) 6P connector terminal No. 6 and body ground. Is there about 0.2 V or less? YES -Go to step 21 . NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2245 and/or P2249* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 20 .
Monitor the OBD STATUS for DTC P2245 and/or P2249* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 19 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2245 and/or P2249* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P2245 and/or P2249* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2251: Rear A/F Sensor (Bank 1, Sensor 1) VS Circuit High Voltage; DTC P2254: Front A/F Sensor (Bank 2, Sensor 1) VS Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P2251 and/or P2254* is stored at the same time as DTC P0134 and/or P0154*, troubleshoot DTC P2251 and/or P2254* first, then recheck for P0134 and/or P0154*. Information marked with an asterisk (*) applies to the front bank (Bank 2).

Scheme 200

Scheme 200: DTC P2251: Rear A/F Sensor (Bank 1, Sensor 1) VS Circuit High Voltage; DTC P2254: Front A/F Sensor (

Scheme 201

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2251 and/or P2254* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the A/F sensor (Sensor 1) 6P connector.
Disconnect PCM connector B (49P).
Check for continuity between A/F sensor (Sensor 1) 6P connector terminal No. 4 and PCM connector terminal B13 (B14)*. Is there continuity? YES -Go to step 10 . NO -Repair open in the wire between the PCM (B13 (B14)*) and the A/F sensor (Sensor 1), then go to step 15 .
Reconnect PCM connector B (49P).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Measure the voltage between A/F sensor (Sensor 1) 6P connector terminal No. 4 and body ground. Is there about 0.2 V or less? YES -Go to step 21 . NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2251 and/or P2254* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 20 .
Monitor the OBD STATUS for DTC P2251 and/or P2254* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 19 , go to the indicated DTC's troubleshooting. NO -if the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2251 and/or P2254* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P2251 and/or P2254* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2252: Rear A/F Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage; DTC P2255: Front A/F Sensor (Bank 2, Sensor 1) VS Circuit Low Voltage

Scheme 202

Scheme 202: DTC P2252: Rear A/F Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage; DTC P2255: Front A/F Sensor (B

Scheme 203

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2252 and/or P2255* indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the A/F sensor (Sensor 1) 6P connector.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B13 (B14)* and body ground. Is there continuity? YES -Repair short in the wire between the PCM (B13 (B14)*) and the A/F sensor (Sensor 1), then go to step 15 . NO -Go to step 10 .
Reconnect PCM connector B (49P).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 2 minutes.
Measure the voltage between A/F sensor (Sensor 1) 6P connector terminal No. 4 and body ground. Is there about 0.2 V or less? YES -Go to step 21 . NO -Go to step 13.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2252 and/or P2255* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 20 .
Monitor the OBD STATUS for DTC P2252 and/or P2255* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 19 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
Turn the ignition switch to LOCK (0).
Reconnect all connectors.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2252 and/or P2255* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . NO -Go to step 26 .
Monitor the OBD STATUS for DTC P2252 and/or P2255* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then go to step 24 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2270: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Lean; DTC P2272: Front Secondary HO2S (Bank 2, Sensor 2) Circuit Signal Stuck Lean

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 70°C (158°F) Transmission in D Engine speed between 1,500-3,000 rpm Drive 35 seconds or more
Monitor the OBD STATUS for DTC P2270 and/or P2272* in the DTCs MENU with the HDS. Does the HDS indicate FAILED? YES -Go to step 6 . NO -If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the HDS indicates NOT COMPLETED, go to step 3 and recheck.
Turn the ignition switch to LOCK (0).
Replace secondary HO2S (Sensor 2) (see «SECONDARY HO2S REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__secondary-ho2s-replacement) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 70°C (158°F) Transmission in D Engine speed between 1,500-3,000 rpm Drive 35 seconds or more
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2270 and/or P2272* indicated? YES -Check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . NO -Go to step 14 .
Monitor the OBD STATUS for DTC P2270 and/or P2272* in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -Troubleshooting is complete. If any other Pending DTCs or Confirmed DTCs were indicated in step 13 , go to the indicated DTC's troubleshooting. NO -If the HDS indicates FAILED, check for poor connections or loose terminals at secondary HO2S (Sensor 2) and the PCM, then go to step 1 . If the HDS indicates NOT COMPLETED, go to step 11 .

DTC P2610: PCM Ignition Off Internal Timer Malfunction

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2610 indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2610 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P2A00: Rear A/F Sensor (Bank 1, Sensor 1) Circuit Range/Performance Problem; DTC P2A03: Front A/F Sensor (Bank 2, Sensor 1) Circuit Range/Performance Problem

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in D Vehicle speed between 25-55 mph (40-88 km/h) for 5 minutes Drive at a steady speed between 55-75 mph (88-120 km/h) for 10 seconds, then decelerate (with the throttle fully closed) for 6 seconds
Monitor the OBD STATUS for DTC P2A00 and/or P2A03* in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 6 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 3 and recheck.
Turn the ignition switch to LOCK (0).
Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__af-sensor-replacement) ).
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F(70°C) Transmission in D Vehicle speed between 25-55 mph (40-88 km/h) for 5 minutes Drive at a steady speed between 55-75 mph (88-120 km/h) for 10 seconds, then decelerate (with the throttle fully closed) for 6 seconds
Check for Pending or Confirmed DTCs with the HDS. Is DTC P2A00 and/or P2A03* indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 13 .
Monitor the OBD STATUS for DTC P2A00 and/or P2A03* in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 12 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM, then go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 11 .

DTC U0029: F-CAN Malfunction (BUS-OFF (PCM))

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0029 indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time.
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0029 indicated? YES -If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC U0122: F-CAN Malfunction (PCM-VSA Modulator-Control Unit)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 204

Scheme 204: DTC U0122: F-CAN Malfunction (PCM-VSA Modulator-Control Unit)

Scheme 205

Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Are DTC U0029 and U0122 indicated at the same time? YES -Go to the troubleshooting for DTC U0029 (see «DTC U0029: F-CAN MALFUNCTION (BUS-OFF (PCM))»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dtc-u0029-f-can-malfunction-bus-off-pcm) ). NO -Go to step 3 .
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0122 indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the VSA modulator-control unit and the PCM.
Check for communication to the VSA system with the HDS. Does the HDS communicate with the VSA modulator-control unit? YES -Go to step 6 . NO -Go to the symptom troubleshooting for ABS indicator, brake system indicator, and VSA indicator do not go off (see «ABS INDICATOR, BRAKE SYSTEM INDICATOR, AND VSA INDICATOR DO NOT GO OFF»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6) ).
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the VSA modulator-control unit 47P connector.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A48 and VSA modulator-control unit 47P connector terminal No. 12. Is there continuity? YES -Go to step 11 . NO -Repair open in the wire between the PCM (A48) and the VSA modulator-control unit, then go to step 12 .
Check for continuity between PCM connector terminal A49 and VSA modulator-control unit 47P connector terminal No. 13. Is there continuity? YES -Update the VSA modulator-control unit if it does not have the latest software (see «VSA MODULATOR-CONTROL UNIT UPDATE»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__vsa-modulator-control-unit-update) ), or substitute a known-good VSA modulator-control unit (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__vsa-modulator-control-unit-removal-and-installation) ), then go to step 12 and recheck. If DTC U0122 is not indicated after substitution, replace the original VSA modulator-control unit (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__vsa-modulator-control-unit-removal-and-installation) ), then go to step 12 . NO -Repair open in the wire between the PCM (A49) and the VSA modulator-control unit, then go to step 12.
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0122 indicated? YES -Check for poor connections or loose terminals at the VSA modulator-control unit and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC U0131: F-CAN Malfunction (PCM-EPS Control Unit)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 206

Scheme 206: DTC U0131: F-CAN Malfunction (PCM-EPS Control Unit)

Scheme 207

Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS. Are DTC U0029 and U0131 indicated at the same time? YES -Go to the troubleshooting for DTC U0029 (see «DTC U0029: F-CAN MALFUNCTION (BUS-OFF (PCM))»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dtc-u0029-f-can-malfunction-bus-off-pcm) ). NO -Go to step 3 .
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0131 indicated? YES -Go to step 5 . NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EPS control unit, and the PCM.
Check for communication to the EPS system with the HDS. Does the HDS communicate with the EPS control unit? YES -Go to step 6 . NO -Go to the symptom troubleshooting for EPS indicator does not go off, and no DTCs are stored (see «SYMPTOM TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/electronic-steering/#electronic-power-steering-eps-system-v6) ).
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect EPS control unit connector D (28P).
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A48 and EPS control unit connector D (28P) terminal No. 1. Is there continuity? YES -Go to step 11 . NO -Repair open in the wire between the PCM (A48) and the EPS control unit, then go to step 12 .
Check for continuity between PCM connector terminal A49 and EPS control unit connector D (28P) terminal No. 15. Is there continuity? YES -Substitute a known-good EPS control unit (see «EPS CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/electronic-steering/#electronic-power-steering-eps-system-v6) ), then go to step 12 and recheck. If DTC U0131 is not indicated, replace the original EPS control unit (see «EPS CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/electronic-steering/#electronic-power-steering-eps-system-v6) ), then go to step 12 . NO -Repair open in the wire between the PCM (A48) and the EPS control unit, then go to step 12 .
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0131 indicated? YES -Check for poor connections or loose terminals at the EPS control unit and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC U0155: F-CAN Malfunction (PCM-Gauge Control Module)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 208

Scheme 208: DTC U0155: F-CAN Malfunction (PCM-Gauge Control Module)

Scheme 209

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0155 indicated? YES -Go to step. 4 NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the gauge control module and the PCM.
Check for body electrical DTCs in the DTCs MENU with the HDS. Is DTC U0029 and/or U0100 indicated? YES -Go to step 5 . NO -Do the gauge control module input test (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-input-test) ).
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-replacement) ).
Disconnect the gauge control module 32P connector.
Disconnect PCM connector A (49P).
Check for continuity between PCM connector terminal A48 and gauge control module 32P connector terminal No. 22. Is there continuity? YES -Go to step 11 . NO -Repair open in the wire between the PCM (A48) and the gauge control module, then go to step 12 .
Check for continuity between PCM connector terminal A49 and gauge control module 32P connector terminal No. 21. Is there continuity? YES -Substitute a known-good gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-replacement) ), then go to step 12 and recheck. If DTC U0155 is not indicated after substitution, replace the original gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-replacement) ), then go to step 12 . NO -Repair open in the wire between the PCM (A49) and the gauge control module, then go to step 12 .
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0155 indicated? YES -Check for poor connections or loose terminals at the gauge control module and the PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC U0300: PGM-FI System and A/T System Program Version Mismatch

Do the PCM update procedure (PGM-FI system and A/T system) (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ).
Check for Pending or Confirmed DTCs with the HDS. Is DTC U0300 indicated? YES -Replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

Scheme 210

Scheme 210: F-CAN Circuit Troubleshooting

Scheme 211

Scheme 212

Scheme 213

Scheme 214

Scheme 215

Scheme 216

Scheme 217

Scheme 218

Scheme 219

Scheme 220

Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Measure the resistance between PCM connector terminals A48 and A49. Is there about 81-99 ohms? YES -Go to step 15 . NO -Go to step 5 .
Disconnect these connectors: Gauge control module 32P (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-replacement) ). VSA modulator-control unit 47P (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__vsa-modulator-control-unit-removal-and-installation) ). EPS control unit 28P connector (see «EPS CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/electronic-steering/#electronic-power-steering-eps-system-v6) ). Yaw rate-lateral acceleration sensor 5P (see «YAW RATE-ACCELERATION SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__yaw-rate-acceleration-sensor-replacement) ). SRS unit A (39P) (see «SRS UNIT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/airbag/#srs-supplemental-restraint-system-v6) ). TPMS control unit 20P (see «TPMS CONTROL UNIT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/wheel-tire-system/#tpms-tire-pressure-monitoring-system-v6__tpms-control-unit-replacement) ). AcuraLink control unit (XM receiver) connector A (32P) (USA model with navigation) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/entertainment-systems/#audio-system-v6__acuralink-control-unit-xm-receiver-removalinstallation) ).
Check for continuity between PCM connector terminals A48 and A49. Is there continuity? YES -Repair short in the wires between PCM connector terminals A48 and A49. NO -Go to step 7 .
Check for continuity between PCM connector terminal A48 and gauge control module 32P connector terminal No. 22. Is there continuity? YES -Go to step 8 . NO -Repair open in the wire between the PCM (A48) and the gauge control module.
Check for continuity between PCM connector terminal A48 and VSA modulator-control unit 47P connector terminal No. 12. Is there continuity? YES -Go to step 9 . NO -Repair open in the wire between the PCM (A48) and the VSA modulator-control unit.
Check for continuity between PCM connector terminal A48 and EPS control unit connector D (28P) terminal No. 1. Is there continuity? YES -Go to step 10 . NO -Repair open in the wire between the PCM (A48) and the EPS control unit.
Check for continuity between PCM connector terminal A49 and gauge control module 32P connector terminal No. 21. Is there continuity? YES -Go to step 11 . NO -Repair open in the wire between the PCM (A49) and the gauge control module.
Check for continuity between PCM connector terminal A49 and VSA modulator-control unit 47P connector terminal No. 13. Is there continuity? YES -Go to step 12 . NO -Repair open in the wire between the PCM (A49) and the VSA modulator-control unit.
Check for continuity between PCM connector terminal A49 and EPS control unit connector D (28P) terminal No. 15. Is there continuity? YES -Go to step 13 . NO -Repair open in the wire between the PCM (A49) and the EPS control unit.
Reconnect the VSA modulator-control unit 47P connector.
Measure the resistance between PCM connector terminals A48 and A49. Is there about 108-132 ohms? YES -Disconnect the VSA modulator-control unit 47P connector, then go to step 16 . NO -Substitute a known-good VSA modulator-control unit (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__vsa-modulator-control-unit-removal-and-installation) ), and reconnect PCM connector A (49P). If the HDS identifies the vehicle, replace the original VSA modulator-control unit (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ).
Disconnect these connectors: Gauge control module 32P (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-replacement) ). VSA modulator-control unit 47P (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__vsa-modulator-control-unit-removal-and-installation) ). EPS control unit 28P connector (see «EPS CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/electronic-steering/#electronic-power-steering-eps-system-v6) ). Yaw rate-lateral acceleration, sensor 5P (see «YAW RATE-ACCELERATION SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__yaw-rate-acceleration-sensor-replacement) ). SRS unit A (39P) (see «SRS UNIT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/airbag/#srs-supplemental-restraint-system-v6) ). TPMS control unit 20P (see «TPMS CONTROL UNIT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/wheel-tire-system/#tpms-tire-pressure-monitoring-system-v6__tpms-control-unit-replacement) ). AcuraLink control unit (XM receiver) connector A (32P) (USA model with navigation) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/entertainment-systems/#audio-system-v6__acuralink-control-unit-xm-receiver-removalinstallation) ).
Check for continuity between PCM connector terminal A48 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (A48) and the gauge control module, the VSA modulator-control unit, the EPS control unit, the yaw rate-lateral acceleration sensor, the SRS unit, the TPMS control unit, the navigation unit, the AcuraLink control unit (XM receiver) (USA model with navigation), or the DLC. NO -Go to step 17 .
Check for continuity between PCM connector terminal A49 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (A49) and the gauge control module, the VSA modulator-control unit, the EPS control unit, the yaw rate-lateral acceleration sensor, the SRS unit, the TPMS control unit, the navigation unit, the AcuraLink control unit (XM receiver) (USA model with navigation), or the DLC. NO -Go to step 18 .
Reconnect all connectors.
Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Disconnect the gauge control module 32P connector.
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-replacement) ). NO -Go to step 22 .
Turn the ignition switch to LOCK (0).
Reconnect the gauge control module 32P connector.
Disconnect the VSA modulator-control unit 47P connector.
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the VSA modulator-control unit (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__vsa-modulator-control-unit-removal-and-installation) ). NO -Go to step 26 .
Turn the ignition switch to LOCK (0).
Reconnect the VSA modulator-control unit 47P connector.
Disconnect the EPS control unit 28P connector.
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the EPS control unit (see «EPS CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/electronic-steering/#electronic-power-steering-eps-system-v6) ). NO-Go to step 30 .
Turn the ignition switch to LOCK (0).
Reconnect the EPS control unit 28P connector.
Disconnect the yaw rate-lateral acceleration sensor 5P connector.
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the yaw rate-lateral acceleration sensor (see «YAW RATE-ACCELERATION SENSOR REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6__yaw-rate-acceleration-sensor-replacement) ). NO -Go to step 34 .
Turn the ignition switch to LOCK (0).
Reconnect the yaw rate-lateral acceleration sensor 5P connector.
Disconnect SRS unit connector A (39P).
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the SRS unit (see «SRS UNIT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/airbag/#srs-supplemental-restraint-system-v6) ). NO -Go to step 38 .
Turn the ignition switch to LOCK (0).
Reconnect SRS unit connector A (39P).
Disconnect the TPMS control unit 20P connector.
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the TPMS control unit (see «TPMS CONTROL UNIT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/wheel-tire-system/#tpms-tire-pressure-monitoring-system-v6__tpms-control-unit-replacement) ). NO - USA model with navigation: Go to step 42 . USA model without navigation, Canada model: Reconnect all connectors, then update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the HDS identifies the vehicle and the PCM was updated, troubleshooting is complete. If the HDS identifies the vehicle and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ).
Turn the ignition switch to LOCK (0).
Reconnect TPMS control unit 20P connector.
Disconnect AcuraLink control unit connector A (32P).
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the AcuraLink control unit (XM receiver) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/entertainment-systems/#audio-system-v6__acuralink-control-unit-xm-receiver-removalinstallation) ). NO -Reconnect all connectors, then update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the HDS identifies the vehicle and the PCM was updated, troubleshooting is complete. If the HDS identifies the vehicle and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ).

Scheme 221

Scheme 221: MIL Circuit Troubleshooting

Turn the ignition switch to ON (II).
Do the gauge self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__self-diagnostic-function) ). Does the MIL indicator flash? YES -Go to step 3 . NO -Substitute a known-good gauge control module, and recheck. If the symptom/indication goes away with a known-good gauge control module, replace the original gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__gauge-control-module-replacement) ).
Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Check the SCS in the DATA LIST with the HDS. Is a short indicated? YES -Go to step 5 . NO -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ).
Turn the ignition switch to LOCK (0).
Disconnect PCM connector A (49P), then disconnect the HDS.
Check for continuity between PCM connector terminal A32 and body ground. Is there continuity? YES -Repair short in the wire between the PCM (A32), the EPS control unit, and the DLC. NO -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ).

DLC Circuit Troubleshooting

Note. If you suspect the HDS or the HDS DLC cable may be the source of the communication problem, verify that they are working properly by connecting them to a known-good, like vehicle and system, and checking for communication problems.

Scheme 222

Scheme 222: DLC Circuit Troubleshooting

Scheme 223

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Scheme 236

Scheme 237

Scheme 238

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Scheme 242

Scheme 243

Scheme 244

Scheme 245

Scheme 246

Turn the ignition switch to LOCK (0).
Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Go to step 4 . NO -Go to step 23 .
Check for Pending or Confirmed DTCs in the PGM-FI system with the HDS. Are any Pending or Confirmed DTCs indicated? YES -Go to the indicated DTC's troubleshooting. NO - If the HDS does not communicate with the SRS, go to step 5 5. If the HDS does not communicate with the VSA system, go to step 7 . If the HDS does not communicate with the EPS system, go to step 9 . If the HDS does not communicate with the TPMS, go to step 11 . If the HDS does not communicate with the IMMOBI (immobilizer) system, go to step 13 . If the HDS does not communicate with the BODY ELECTRICAL system, go to step 15 .
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II), and watch the SRS indicator. Does the SRS indicator come on and go off? YES -Go to step 17 . NO -Go to the SRS symptom troubleshooting for SRS indicator stays on, but no DTCs are stored (see «SYMPTOM TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/airbag/#srs-supplemental-restraint-system-v6) ).
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II), and watch the VSA indicator. Does the VSA indicator come on and go off? YES -Go to step 17 . NO -Go to the VSA system symptom troubleshooting for ABS indicator, brake system indicator, and VSA indicator do not go off (see «ABS INDICATOR, BRAKE SYSTEM INDICATOR, AND VSA INDICATOR DO NOT GO OFF»(/acura/tsx/ii-2008-2014/remont/anti-locktraction-control/#vsa-system-components-v6) ).
Turn the ignition switch to LOCK (0).
Start the engine, and watch the EPS indicator. Does the EPS indicator come on and go off? YES -Go to step 17 . NO -Go to the EPS system symptom troubleshooting for EPS indicator does not go off, and no DTCs are stored (see «SYMPTOM TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/electronic-steering/#electronic-power-steering-eps-system-v6) ).
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II), and watch the TPMS indicator. Does the TPMS indicator come on and go off? YES -Go to step 17 . NO -Go to the symptom troubleshooting for TPMS indicator does not go off, and no DTCs are stored (see «TPMS INDICATOR DOES NOT COME ON, AND NO DTCS ARE STORED»(/acura/tsx/ii-2008-2014/remont/wheel-tire-system/#tpms-tire-pressure-monitoring-system-v6__tpms-indicator-does-not-come-on) ).
Turn the ignition switch to LOCK (0).
Turn the ignition switch to ON (II), and watch the immobilizer indicator. Does the immobilizer indicator stay on or flash? YES -Go to the immobilizer system troubleshooting (see «SYMPTOM TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/door-locks-anti-theft-systems/#immobilizer-system-v6) ). NO -Go to step 17 .
Do the gauge self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#gauges-v6__self-diagnostic-function) ).
Check the gauge display. Is B-CAN--ERROR indicated? YES -Check for B-CAN system DTCs (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/communication-devices/#multiplex-integrated-control-system-v6) ). NO -Go to step 17 .
Turn the ignition switch to LOCK (0), then do the battery terminal disconnection procedure (see «USING THE GR8 BATTERY DIAGNOSTIC STATION»(/acura/tsx/ii-2008-2014/remont/body-electrical/#battery-v6__using-the-gr8-battery-diagnostic-station) ), and wait at least 3 minutes before continuing work.
Disconnect the HDS from the DLC.
Check for continuity between DLC terminal No. 7 and body ground. Is there continuity? YES -Go to step 20 . NO -Go to step 21 .
Continue to check for continuity between DLC terminal No. 7 and body ground while disconnecting these connectors, one at a time: SRS unit connector A (39P) VSA modulator-control unit 47P connector EPS control unit connector D (28P) TPMS control unit 20P connector Immobilizer-keyless control unit 7P connector Audio unit connector A (24P) (without navigation) Audio-navigation unit connector A (24P) (without navigation) Driver's under-dash fuse/relay box connector Q (20P) Does continuity go away when one of the above connectors is disconnected? YES -Replace the part that caused continuity go away when it was disconnected. NO -Repair short in the wire between the DLC No. 7 (K-line) and the VSA modulator-control unit, the EPS control unit, the SRS unit, the TPMS control unit, the immobilizer-keyless control unit, the audio unit, or the driver's under-dash fuse/relay box.
Connect DLC terminal No. 7 to body ground with a jumper wire.
Check for continuity between body ground and these connector terminals: DLC CONNECTOR TERMINAL REFERENCE CHART Connector Terminal SRS unit A(39P) No. 18 (LT BLU) VSA modulator-control unit 47P No. 10 (LT BLU) EPS control unit D (28P) No. 17 (LT BLU) TPMS control unit 20P No. 7 (LT BLU) Immobilizer-keyless control unit 7P No. 5 (LT BLU) Audio unit A (24P) (without navigation) No. 3 (LT BLU) Audio-navigation unit A (24P) (with navigation) No. 3 (LT BLU) Driver's under-dash fuse/relay box Q (20P) No. 16 (LT BLU) Is there continuity between body ground and each of the terminals in the chart? YES -Replace the part that does not communicate with the HDS. NO -Repair open in the wire between the DLC (K-line) and the appropriate connector.
Check for B-CAN system DTCs without the HDS (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS)»(/acura/tsx/ii-2008-2014/remont/communication-devices/#multiplex-integrated-control-system-v6__troubleshooting-b-can-system-diagnosis-test) ). Is DTC U0029 and/or U0100 indicated? YES -Go to step 34 . NO -Go to step 24 .
Turn the ignition switch to LOCK (0).
Disconnect the HDS from the DLC.
Measure the voltage between DLC terminal No. 16 and body ground. Is there battery voltage? YES -Go to step 27 . NO -Repair open in the wire between DLC terminal No. 16 and the No. 15 BACK UP (10 A) fuse in the under-hood fuse/relay box.
Measure the voltage between DLC terminals No. 4 and No. 16. Is there battery voltage? YES -Go to step 28 . NO -Repair open in the wire between DLC terminal No. 4 and body ground (G501) (see «DASHBOARD WIRE HARNESS (VIEW OF STEERING COLUMN SIDE)»(/acura/tsx/ii-2008-2014/remont/body-electrical/#connectors-and-harnesses-v6__dashboard-wire-harness-view-of-steering) ).
Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Jump the SCS line with the HDS.
Disconnect PCM connector A (49P).
Disconnect the HDS from the DLC.
Check for continuity between PCM connector terminal A48 and DLC terminal No. 6. Is there continuity? YES -Go to step 33 . NO -Repair open in the wire between the PCM (A48) and DLC terminal No. 6.
Check for continuity between PCM connector terminal A49 and DLC terminal No. 14. Is there continuity? YES -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). NO -Repair open in the wire between the PCM (A49) and DLC terminal No. 14.
Try to start the engine. Does the engine start and idle? YES -Go to the F-CAN circuit troubleshooting (see «F-CAN CIRCUIT TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6) ). NO - If the starter cranks, turn the ignition switch to LOCK (0), and go to step 37 . If the starter does not crank, go to step 35 .
Turn the ignition switch to LOCK (0).
Check the No. 3-1 IG MAIN (50 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Repair open in the wire between the No. 3-1 IG MAIN (50 A) fuse and the ignition switch. If the wire is OK, go to step 37 . NO -Repair short in the wire between the No. 3-1 IG MAIN (50 A) fuse and the ignition switch or power control unit (with keyless access system). Also replace the No. 3-1 IG MAIN (50 A) fuse.
Inspect the No. 17 Fl MAIN (15 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Go to step 44 . NO -Go to step 38 .
Remove the blown No. 17 Fl MAIN (15 A) fuse from the under-hood fuse/relay box.
Remove PGM-FI main relay 1 (A) from the under-hood fuse/relay box.
Check for continuity between body ground and PGM-FI main relay 1 4P connector terminals No. 1 and No. 4 individually. Is there continuity? YES -Replace the under-hood fuse/relay box (see «REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-hood-fuserelay-box-v6__removal-and-installation) ). Also replace the No. 17 Fl MAIN (15 A) fuse. NO -Go to step 41 .
While disconnecting each of the parts or connectors below, one at a time, check for continuity between PGM-FI main relay 1 4P connector terminal No. 2 and body ground: PGM-FI main relay 2 PCM connector B (49P) Each injector 2P connector Camshaft position (CMP) sensor 3P connector Crankshaft position (CKP) sensor 3P connector MAF sensor/IAT sensor 5P connector Electronic throttle control system (ETCS) control relay Does continuity go away when one of the above parts or connectors is disconnected? YES -Replace the part that made the short to body ground go away when it was disconnected. If the part is the PCM, update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). NO -Go to step 42 .
Disconnect these parts or connectors: PGM-FI main relay 2 PCM connector B (49P) Injectors Camshaft position (CMP) sensor Crankshaft position (CKP) sensor MAF sensor/IAT sensor 5P connector Electronic throttle control system (ETCS) control relay
Check for continuity between PGM-FI main relay 1 4P connector terminal No. 2 and body ground. Is there continuity? YES -Repair short in the wire between PGM-FI main relay 1 and each part. Also replace the No. 17 Fl MAIN (15A) fuse. NO -Replace PGM-FI main relay 1. Also replace the No. 17 FI MAIN (15A) fuse.
Inspect the No. 9 FUEL PUMP (20 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES -Go to step 56 . NO -Go to step 45 .
Remove the blown No. 9 FUEL PUMP (20 A) fuse from the driver's under-dash fuse/relay box.
Remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/gauges-instrument-panels/#dashboard-v6__drivers-dashboard-lower-cover-removalinstallation) ), then remove PGM-FI main relay 2 (A) from the driver's under-dash fuse/relay box.
Test PGM-FI main relay 2 (FUEL PUMP) (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Is the relay OK? YES -Go to step 48 . NO -Replace PGM-FI main relay 2 (FUEL PUMP). Also replace the No. 9 FUEL PUMP (20 A) fuse.
Check for continuity between PGM-FI main relay 2 4P connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 49 . NO -Go to step 52 .
Jump the SCS line with the HDS.
Disconnect PCM connector B (49P).
Check for continuity between PCM connector terminal B42 and body ground. Is there continuity? YES -Repair short in the wire between the No. 9 FUEL PUMP (20 A) fuse and the PCM (B42), between the No. 9 FUEL PUMP (20 A) fuse and PGM-FI main relay 2, or between the No. 9 FUEL PUMP (20 A) fuse and the immobilizer control unit. Also replace the No. 9 FUEL PUMP (20 A) fuse. NO -Replace the No. 9 FUEL PUMP (20 A) fuse, and update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ).
Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tsx/ii-2008-2014/remont/seats/#seats-v6) ).
Remove the access panel from the floor (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6__fuel-tank-unit-removal-and-installation) ).
Disconnect the fuel pump 4P connector.
Check for continuity between fuel pump 4P connector terminal No. 2 and body ground. Is there continuity? YES -Repair short in the wire between the fuel pump and PGM-FI main relay 2. Also replace the No. 9 FUEL PUMP (20A) fuse. NO -Check the fuel pump, and replace it if needed (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6) ). Also replace the No. 9 FUEL PUMP (20 A) fuse.
Jump the SCS line with the HDS.
Disconnect PCM connectors A (49P) and B (49P).
Turn the ignition switch to ON (II).
Measure the voltage between PCM connector terminal B42 and body ground. Is there battery voltage? YES -Go to step 60 . NO -Repair open in the wire between the No. 9 FUEL PUMP (20 A) fuse and the PCM (B42).
Measure the voltage between PCM connector terminal A6 and body ground. Is there battery voltage? YES -Go to step 65 . NO -Go to step 61 .
Turn the ignition switch to LOCK (0).
Remove PGM-FI main relay 1 (A) from the under-hood fuse/relay box.
Measure the voltage between PGM-FI main relay 1 4P connector terminal No. 4 and body ground. Is there battery voltage? YES -Go to step 64 . NO -Replace the under-hood fuse/relay box (see «REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-hood-fuserelay-box-v6__removal-and-installation) ).
Check for continuity between PGM-FI main relay 1 4P connector terminal No. 3 and PCM connector terminal A6. Is there continuity? YES -Test PGM-FI main relay 1 (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). If the relay is OK, update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). NO -Repair open in the wire between the PCM (A6) and PGM-FI main relay 1.
Turn the ignition switch to LOCK (0).
Remove PGM-FI main relay 1 (A) from the under-hood fuse/relay box.
Measure the voltage between PGM-FI main relay 1 4P connector terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 68 . NO -Replace the under-hood fuse/relay box (see «REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuses-circuit-breakers/#under-hood-fuserelay-box-v6__removal-and-installation) ).
Check for continuity between PGM-FI main relay 1 4P connector terminal No. 2 and PCM connector terminal B3. Is there continuity? YES -Go to step 69 . NO -Repair open in the wire between the PCM (B3) and PGM-FI main relay 1.
Test PGM-FI main relay 1 (see «POWER RELAY TEST»(/acura/tsx/ii-2008-2014/remont/body-electrical/#relays-v6__power-relay-test) ). Is PGM-FI main relay 1 OK? YES -Go to step 70 . NO -Replace PGM-FI main relay 1.
Disconnect PCM connector C (49P).
Check for continuity between body ground and PCM connector terminals A41, B1, B40, B41, C1, and C41 individually. Is there continuity? YES -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6__substituting-the-pcm) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away and the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-replacement) ). NO -Repair open in the wire(s) between the PCM (A41, B1, B40, B41, C1, C41) and body ground (G101).

Scheme 247

Scheme 247: Injector Replacement

Scheme 248

Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6__fuel-pressure-relieving) ).
Remove the intake manifold (see «REMOVAL»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ).
Disconnect the quick-connect fitting (A).
Remove the fuel joint hose mounting bolt (B).
Disconnect the connectors (C) from the injectors.
Remove the fuel rail mounting bolts (D) from the fuel rails (E).
Remove the fuel rails and the injectors from the injector base.
Remove the injector clips (F) from the fuel rails.
Remove the injectors from the fuel rails.
Coat the new O-rings (black) (A) with clean engine oil, and insert the injectors (B) into the fuel rails (C).
Install the injector clips (D).
Coat the new O-rings (green) (E) with clean engine oil.
Install the fuel rails and the injectors in the injector base (F).
Install the fuel rail mounting bolts, and connect the injector connectors.
Install the fuel joint hose mounting bolt.
Connect the quick-connect fitting (see «FUEL LINE/QUICK-CONNECT FITTING INSTALLATION»(/acura/tsx/ii-2008-2014/remont/fuel-system/#fuel-supply-system-v6__fuel-linequick-connect-fitting-installation) ).
Turn the ignition switch to ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel rail will be pressurized. Repeat this two or three times, then make sure there are no fuel leaks.
Install the intake manifold with a new gasket (see «INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ).

Scheme 249

Scheme 249: MAP Sensor Replacement

Disconnect the MAP sensor connector (A).
Remove the screw (B).
Remove the MAP sensor (C).
Install the parts in the reverse order of removal with a new O-ring (D).

Scheme 250

Scheme 250: MAF Sensor/IAT Sensor Replacement

Disconnect the MAF sensor/IAT sensor 5P connector (A).
Remove the screws (B).
Remove the MAF sensor/IAT sensor (C).
Install the parts in the reverse order of removal with a new O-ring (D).

Scheme 251

Scheme 251: ECT Sensor 1 Replacement

Drain the engine coolant (see «COOLANT CHECK»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ).
Disconnect the ECT sensor 1 2P connector (A).
Remove ECT sensor 1 (B).
Install the parts in the reverse order of removal with a new O-ring (C), then refill the radiator with engine coolant (see «COOLANT CHECK»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ).

Scheme 252

Scheme 252: ECT Sensor 2 Replacement

Remove the splash shield.
Drain the engine coolant (see «COOLANT CHECK»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ).
Disconnect the ECT sensor 2 2P connector (A).
Remove ECT sensor 2 (B).
Install the parts in the reverse order of removal with a new O-ring (C), then refill the radiator with engine coolant (see «COOLANT CHECK»(/acura/tsx/ii-2008-2014/remont/cooling-fan/#engine-cooling-system-v6) ).

A/F Sensor Replacement

Special Tools Required

Dummy Snap-On SWR2 or O2 Sensor Wrench Snap-on YA8875, commercially available

Scheme 253

Scheme 253: Front Bank (Bank 2)

Disconnect the front A/F sensor 6P connector (A), then remove the A/F sensor (B).
Install the parts in the reverse order of removal.

Scheme 254

Scheme 254: Rear Bank (Bank 1)

Disconnect the rear A/F sensor 6P connector (A), then remove the A/F sensor (B).
Install the parts in the reverse order of removal.

Secondary HO2S Replacement

Special Tools Required

Dummy Snap-On SWR2 or O2 Sensor Wrench Snap-on YA8875, commercially available

Scheme 255

Scheme 255: Front Bank (Bank 2)

Scheme 256

Disconnect the front secondary HO2S 4P connector (A), and remove the harness clamps (B).
Raise the vehicle on a lift.
Remove the harness clamp (A), then remove front secondary HO2S (B).
Install the parts in the reverse order of removal.

Scheme 257

Scheme 257: Rear Bank (Bank 1)

Raise the vehicle on a lift.
Disconnect the rear secondary HO2S 4P connector (A), and remove the harness clamps (B).
Remove rear secondary HO2S (C).
Install the parts in the reverse order of removal.

Scheme 258

Scheme 258: CMP Sensor Replacement

Scheme 259

Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-v6) ).
Remove the front camshaft pulley (CMP sensor pulse plate) (A).
Disconnect the CMP sensor connector (B), then remove the back cover (C).
Remove the CMP sensor (A) from the back cover.
Install the parts in the reverse order of removal. Install the timing belt (see «TIMING BELT INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-v6__timing-belt-installation) ).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).

Scheme 260

Scheme 260: CKP Sensor Replacement

Raise the vehicle on a lift. NOTE: Make the vehicle is level, because engine oil will drip out when you remove the sensor.
Remove the CKP sensor cover (A).
Disconnect the CKP sensor connector (B).
Remove the CKP sensor (C).
Install the parts in the reverse order of removal with a new O-ring (D).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).
Check for engine oil level, and add more oil if needed.

Scheme 261

Scheme 261: Knock Sensor Replacement

Remove the intake manifold (see «REMOVAL»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ).
Remove the injector base (see «INJECTOR BASE REMOVAL AND INSTALLATION»(/acura/tsx/ii-2008-2014/remont/exhaust/#intake-manifold-and-exhaust-system-v6) ).
Disconnect the knock sensor connector (A).
Remove the knock sensor (B).
Install the parts in the reverse order of removal.

Scheme 262

Scheme 262: ELD Replacement

Scheme 263

Scheme 264

Scheme 265

Do the battery terminal disconnection procedure (see «USING THE GR8 BATTERY DIAGNOSTIC STATION»(/acura/tsx/ii-2008-2014/remont/body-electrical/#battery-v6__using-the-gr8-battery-diagnostic-station) ).
Remove the upper cover (A), then remove the two positive (+) terminals (B).
Remove the under-hood fuse/relay box (C) from the bracket.
Remove the lower cover (A).
Disconnect the ELD 3P connector (B).
Remove the fuses (A, B)
Release the three lock tabs (A), then remove the ELD (B).
Install the parts in the reverse order of removal.
Do the battery terminal reconnection procedure (see «USING THE GR8 BATTERY DIAGNOSTIC STATION»(/acura/tsx/ii-2008-2014/remont/body-electrical/#battery-v6__using-the-gr8-battery-diagnostic-station) ).

PCM Update

Special Tools Required

Honda Diagnostic System (HDS) tablet tester
Honda Interface Module (HIM) and an iN workstation with the latest HDS software version
HDS pocket tester
GNA600 and an iN workstation with the latest HDS software version
MVCI unit with the latest control module (CM) update software installed

Any one of the above updating tools can be used.

Note. Make sure the HDS/iN workstation or the MVCI has the latest HDS software version. Before you update the PCM, make sure the battery in the vehicle is fully charged, and connect a jumper battery (not a battery charger) to maintain system voltage. Never turn the ignition switch to ACC (I) or LOCK (0) during the update. If there is a problem with the update, leave the ignition switch in ON (II). To prevent PCM damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power windows, moonroof, door locks, etc.) during the update. To ensure the latest program is installed, do a PCM update whenever the PCM is substituted or replaced. You cannot update a PCM with a program it already has. It will only accept a new program. High temperature in the engine compartment might cause the PCM to become too hot to run the update. If the engine has been running before this procedure, open the hood and cool the engine compartment. If you need to diagnose the Honda interface module (HIM) because the HIM's red (#3) light came on or was flashing during the update, leave the ignition switch in ON (II) when you disconnect the HIM from the data link connector (DLC). This will prevent PCM damage.

Scheme 266

Turn the ignition switch to ON (II), but do not start the engine.
Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dlc-circuit-troubleshooting) ).
Exit the HDS diagnostic system, then select the update mode, and follow the screen prompts to update the PCM.
If the software in the PCM is the latest, disconnect the updating tool from the DLC, and go back to the procedure that you were doing. If the software in the PCM is not the latest, follow the instructions on the screen. If prompted to choose the PGM-FI system or the A/T system, make sure you update both. NOTE: If the PCM update system requires you to cool the PCM, follow the instructions on screen. If you run into a problem during the update procedure (programming takes over 15 minutes, status bar goes over 100%, D or immobilizer indicator flashes, HDS tablet freezes, etc.), follow these steps to minimize the chance of damaging the PCM: Leave the ignition switch in ON (II). Connect a jumper battery (do not connect a battery charger). Shut down the updating tool. Disconnect the updating tool from the DLC. Reboot the updating tool. Reconnect the updating tool to the DLC, and do the update again.
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).

PCM Replacement

Special Tools Required

Honda Diagnostic System (HDS) tablet tester
Honda Interface Module (HIM) and an iN workstation with the latest HDS software version
HDS pocket tester
GNA600 and an iN workstation with the latest HDS software version
MVCI unit with the latest control module (CM) update software installed

Any one of the above updating tools can be used.

Note. Make sure the HDS/iN workstation or the MVCI has the latest HDS software version.

Scheme 267

Scheme 268

Scheme 269

Connect HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
Turn the ignition switch to ON (II).
Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__dlc-circuit-troubleshooting) ). If you are returning from the DLC circuit troubleshooting, skip steps 4 through 9, 20 through 25, and 28 through 30, and do this after replacing the PCM: Replace the engine oil (see «ENGINE OIL REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/lubrication-system/#engine-lubrication-v6) ) and the engine oil filter (see «ENGINE OIL FILTER REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/lubrication-system/#engine-lubrication-v6__engine-oil-filter-replacement) ). Replace the ATF (see «ATF REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/automatic-trans/#automatic-transmission-v6) ). Clean the throttle body (see «THROTTLE BODY CLEANING»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-cleaning) ).
Select the PGM-FI system with the HDS.
Select the REPLACE PCM MENU, then select READ DATA, and follow the screen prompts. NOTE: Doing this step copies (READS) the engine oil life data from the original PCM so you can later download (WRITES) it into the new PCM. If READ DATA indicates FAILED, continue with this procedure.
Select the A/T system with the HDS.
Select the REPLACE TCM/PCM MENU, then select READ DATA, and follow the screen prompts. NOTE: Doing this step copies (READS) the ATF life data from the original PCM so you can later download (WRITES) it into the new PCM. If READ DATA indicates FAILED, continue with this procedure.
Turn the ignition switch to LOCK (0).
Do the battery removal procedure (see «RECONNECTION»(/acura/tsx/ii-2008-2014/remont/body-electrical/#battery-v6__reconnection) ).
Remove the bolts (D).
Disconnect PCM connectors A, B, and C, then remove the PCM assembly (E). NOTE: PCM connectors A, B, and C have symbols (A=[], B=, C=o) embossed on them for identification.
Remove the cover (A) and the bracket (B) from the PCM (C).
Install a known-good PCM in the reverse order of removal.
Do the battery installation procedure (see «RECONNECTION»(/acura/tsx/ii-2008-2014/remont/body-electrical/#battery-v6__reconnection) ).
Turn the ignition switch to ON (II). NOTE: DTC P0630 VIN Not Programmed or Mismatch may be stored because the VIN has not been programmed into the PCM; ignore it, and continue this procedure.
Manually input the VIN to the PCM with the HDS.
If the READ DATA (engine oil life) failed in step 5 , go to step 20 . Otherwise, go to step 18 .
Select the PGM-FI system with the HDS.
Select the REPLACE PCM MENU, then select WRITE DATA, and follow the screen prompts. NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.
If the READ DATA (ATF life) failed in step 7 , go to step 23 . Otherwise go to step 21 .
Select the A/T SYSTEM with the HDS.
Select the REPLACE TCM/PCM MENU, then select WRITE DATA, and follow the screen prompts. NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.
Select IMMOBI system with the HDS.
Enter the immobilizer PCM code that you got from the iN, and use the PCM replacement procedure in the IMMOBI MENU of the HDS; it allows you to start the engine.
If the READ DATA failed in step 5 or the WRITE DATA failed in step 19 , replace the engine oil (see «ENGINE OIL REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/lubrication-system/#engine-lubrication-v6) ) and engine oil filter (see «ENGINE OIL FILTER REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/lubrication-system/#engine-lubrication-v6__engine-oil-filter-replacement) ), then go to step 26 .
If the READ DATA failed in step 7 or the WRITE DATA failed in step 22 , replace the ATF (see «ATF REPLACEMENT»(/acura/tsx/ii-2008-2014/remont/automatic-trans/#automatic-transmission-v6) ), then go to step 27 .
Select PGM-FI system, and reset the PCM with the HDS.
Clean the throttle body (see «THROTTLE BODY CLEANING»(/acura/tsx/ii-2008-2014/remont/mechanical/#intake-air-system-v6__throttle-body-cleaning) ).
Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#pgm-fi-system-v6__pcm-update) ).
Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
Do the CKP pattern clear/CKP pattern learn procedure (see «CKP PATTERN CLEAR/CKP PATTERN LEARN»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#fuel-and-emissions-systems-v6) ).

Pgm-Fi System (v6) Acura TSX II

Scheme 66

Scheme 67

DTC P0101: MAF Sensor Circuit Range/Performance Problem

DTC P0102: MAF Sensor Circuit Low Voltage

Scheme 68

Scheme 69

Scheme 70

Scheme 71

DTC P0103: MAF Sensor Circuit High Voltage

Scheme 72

Scheme 73

DTC P0107: MAP Sensor Circuit Low Voltage

Scheme 74

Scheme 75

Scheme 76

DTC P0108: MAP Sensor Circuit High Voltage

Scheme 77

Scheme 78

Scheme 79

Scheme 80

DTC P0111: IAT Sensor Circuit Range/Performance Problem

DTC P0112: IAT Sensor Circuit Low Voltage

Scheme 81

DTC P0113: IAT Sensor Circuit High Voltage

Scheme 82

Scheme 83

Scheme 84

Scheme 85

DTC P0116: ECT Sensor 1 Circuit Range/Performance Problem

DTC P0117: ECT Sensor 1 Circuit Low Voltage

Scheme 86

DTC P0118: ECT Sensor 1 Circuit High Voltage

Scheme 87

Scheme 88

Scheme 89

Scheme 90

DTC P0125: ECT Sensor 1 Malfunction/Slow Response

DTC P0128: Cooling System Malfunction

DTC P0133: Rear A/F Sensor (Bank 1, Sensor 1) Malfunction/Slow Response; DTC P0153: Front A/F Sensor (Bank 2, Sensor 1) Malfunction/Slow Response

DTC P0134: Rear A/F Sensor (Bank 1, Sensor 1) Heater System Malfunction; DTC P0154: Front A/F Sensor (Bank 2, Sensor 1) Heater System Malfunction

Scheme 91

Scheme 92

DTC P0135: Rear A/F Sensor (Bank 1, Sensor 1) Heater Circuit Malfunction; DTC P0155: Front A/F Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction

Scheme 93

Scheme 94

Scheme 95

Scheme 96

Scheme 97

Scheme 98

Scheme 99

Scheme 100

Scheme 101

Scheme 102

DTC P0137: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Low Voltage; DTC P0157: Front Secondary HO2S (Bank 2, Sensor 2) Circuit Low Voltage

Scheme 103

Scheme 104

Scheme 105

DTC P0138: Rear Secondary HO2S (Bank 1, Sensor 2) Circuit High Voltage; DTC P0158: Front Secondary HO2S (Bank 2, Sensor 2) Circuit High Voltage

Scheme 106

Scheme 107

Scheme 108

DTC P0139: Rear Secondary HO2S (Bank 1, Sensor 2) Slow Response; DTC P0159: Front Secondary HO2S (Bank 2, Sensor 2) Slow Response

DTC P0141: Rear Secondary HO2S (Bank 1, Sensor 2) Heater Circuit Malfunction; DTC P0161: Front Secondary HO2S (Bank 2, Sensor 2) Heater Circuit Malfunction

Scheme 109

Scheme 110

Scheme 111

Scheme 112

Scheme 113

Scheme 114

Scheme 115

Scheme 116

Scheme 117

DTC P0171: Rear Bank (Bank 1) Fuel System Too Lean; DTC P0172: Rear Bank (Bank 1) Fuel System Too Rich; DTC P0174: Front Bank (Bank 2) Fuel System Too Lean; DTC P0175: Front Bank (Bank 2) Fuel System Too Rich

DTC P0301: No. 1 Cylinder Misfire Detected; DTC P0302: No. 2 Cylinder Misfire Detected; DTC P0303: No. 3 Cylinder Misfire Detected; DTC P0304: No. 4 Cylinder Misfire Detected; DTC P0305: No. 5 Cylinder Misfire Detected; DTC P0306: No. 6 Cylinder Misfire Detected

Scheme 118

Scheme 119

Scheme 120

Scheme 121

DTC P0325: Knock Sensor Circuit Malfunction