Home ReviewsRefund
Home/Honda/Insight/Honda Insight ZE2 (2009-2011)/Repair manual/Testing & Diagnostics/Pgm-Fi System: Diagnosis
Contents Wiring diagrams Section: Testing & Diagnostics All sections

Pgm-Fi System: Diagnosis Honda Insight ZE2

Testing & Diagnostics 49 illustrations ~9067 words

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 ).

  1. Turn the ignition switch to ON (II).
  2. 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 .
  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 .
  4. Check for damage at the air cleaner housing. Is it OK? YES -Go to step 5 . NO -Replace the air cleaner housing (see «AIR CLEANER REMOVAL/INSTALLATION»(ref-360274-S09784809262010042800000) ), then go to step 19 .
  5. 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 REMOVAL/INSTALLATION»(ref-360274-S09784809262010042800000) ), then go to step 19 . NO -Go to step 6 .
  6. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
  7. Clear the DTC with the HDS.
  8. Start the engine, and let it idle for 10 seconds or more.
  9. 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. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION or NOT COMPLETED, go to step 6 .
  10. 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»(ref-360274-S28268658552010042800000) ), then go to step 19 .
  11. 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.
  12. 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 4.7-5.7 gm/s? YES -Go to step 13 . NO -Replace the MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360284-S17985659152010042800000) ), then go to step 19 .
  13. Turn the ignition switch to LOCK (0).
  14. Allow the engine to cool to the ambient temperature.
  15. Note the ambient temperature.
  16. Turn the ignition switch to ON (II).
  17. Quickly note the value of the IAT SENSOR in the DATA LIST with the HDS.
  18. Compare the value of the IAT SENSOR and the ambient temperature. Does the value of the IAT SENSOR differ 37 °F (3 °C) or more from the ambient temperature? YES -Replace the MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360284-S17985659152010042800000) ), 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»(ref-360274-S32947855962010042800000) ), then go to step 19 . If there is damage in the throttle bore, replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-360274-S28268658552010042800000) ), then go to step 19 .
  19. Turn the ignition switch to ON (II).
  20. Reset the PCM with the HDS.
  21. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
  22. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
  23. Start the engine, and let it idle for 10 seconds or more.
  24. 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 .
  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 or NOT COMPLETED, 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 ).

  1. Turn the ignition switch to ON (II).
  2. 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 .
  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, then go to step 21 .
  4. Check for damage at the air cleaner housing. Is it OK? YES -Go to step 5 . NO -Replace the air cleaner housing (see «AIR CLEANER REMOVAL/INSTALLATION»(ref-360274-S09784809262010042800000) ), then go to step 21 .
  5. 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 REMOVAL/INSTALLATION»(ref-360274-S09784809262010042800000) ), then go to step 21 . NO -Go to step 6 .
  6. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
  7. Clear the DTC with the HDS.
  8. Start the engine, and let it idle for 10 seconds or more.
  9. 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 or NOT COMPLETED, go to step 6 .
  10. Inspect the ignition timing (see «IGNITION TIMING INSPECTION»(ref-360276-S15076727832010042800000) ). Is the ignition timing OK? YES -Go to step 12 . NO -Go to step 11 .
  11. Check for damage at the CKP sensor (see «CMP SENSOR REPLACEMENT»(ref-360284-S25838473272010042800000) ) and the CKP sensor pulser plate (see «CKP PULSE PLATE REPLACEMENT»(ref-360295-S37144769832010042800000) ). Is the CKP sensor or the CKP sensor pulser plate damaged? YES -Replace the CKP sensor (see «CMP SENSOR REPLACEMENT»(ref-360284-S25838473272010042800000) ) and/or the CKP sensor pulser plate (see «CKP PULSE PLATE REPLACEMENT»(ref-360295-S37144769832010042800000) ), then go to step 21 . NO -Go to step 28 .
  12. 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»(ref-360274-S28268658552010042800000) ), then go to step 21 .
  13. 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.
  14. 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 4.7-5.7 gm/s? YES -Go to step 15 . NO -Replace the MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360284-S17985659152010042800000) ), then go to step 21 .
  15. Turn the ignition switch to LOCK (0).
  16. Allow the sensors to cool to the ambient temperature.
  17. Note the ambient temperature.
  18. Turn the ignition switch to ON (II).
  19. Quickly note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
  20. 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, then go to step 21 . NO -Refill the coolant (see «COOLANT CHECK»(ref-360270-S28078969742010042800000) ), then check for and repair any problems with the following items, and go to step 21 . Engine compression and cylinder leak down VTEC system Engine oil A/C system Power steering
  21. Turn the ignition switch to ON (II).
  22. Reset the PCM with the HDS.
  23. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
  24. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
  25. Start the engine, and let it idle for 10 seconds or more.
  26. 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 .
  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 29, 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 or NOT COMPLETED, go to step 24 .
  28. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ).
  29. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
  30. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
  31. Start the engine, and let it idle for 10 seconds or more.
  32. 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»(ref-360279-S07789660702010042800000) ), then go to step 30 . If the PCM was substituted, go to step 1 . NO -Go to step 33 .
  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 ). 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 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 ), 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 or NOT COMPLETED, go to step 30 .

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 ).

  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. 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.
  4. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ).
  5. 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 ), 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 ). 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 ).

  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P062F indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time.
  4. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ).
  5. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P062F indicated?

YES -If the PCM was updated, substitute a known-good PCM (see 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 ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P16D5: F-CAN Malfunction (Internal Malfunction)

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

  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P16D5 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.
  4. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ).
  5. Check for Pending or Confirmed DTCs with HDS.

Is DTC P16D5 indicated?

YES -If the PCM was updated, substitute a known-good PCM (see 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 ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P16D6: IMA-CAN Malfunction (Internal Malfunction)

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

  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P16D6 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.
  4. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ).
  5. Check for Pending or Confirmed DTCs with HDS.

Is DTC P16D6 indicated?

YES -If the PCM was updated, substitute a known-good PCM (see 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 ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

DTC P219A: Air-Fuel Ratio Variation Of Cylinders

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 of the DTCs listed below are indicated at the same time as DTC P219A, troubleshoot those DTCs first, then recheck for P219A. P0133, P1157, P1172, P2195, P2238, P2252, P2A00: A/F sensor (Sensor 1) P0134, P0135: A/F sensor (Sensor 1) heater P0201, P0202, P0203, P0204: No. 1 - No. 4 cylinder injector(s) P0300: Random misfire P0301, P0302, P0303, P0304: No. 1, No. 2, No. 3, or No. 4 cylinder misfire detected P0351, P0352: ignition coil power circuit P0400, P0401, P0404, P0406, P2413: EGR system If the engine speed fluctuates at highway speeds, the EGR line may be blocked by carbon or sludge.

  1. Turn the ignition switch to ON (II).
  2. Record following HDS parameters (On-board snapshot): VEHICLE SPEED ENGINE SPEED MAP SENSOR ECT SENSOR 1 APP SENSOR AF FB (ST FUEL TRIM) EGR COMMAND EGR LIFT
  3. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  4. Check under these conditions: A/C off All electrical loads off
  5. Do the Cylinder AF Test three times in the INSPECTION MENU with the HDS. Is the result OK? YES -Go to step 6. NO -Go to step 9 .
  6. Clear the DTC with the HDS.
  7. Test-drive the vehicle in the range of these recorded on-board snapshot parameters: VEHICLE SPEED ENGINE SPEED MAP SENSOR ECT SENSOR 1 APP SENSOR AF FB (ST FUEL TRIM) EGR COMMAND EGR LIFT
  8. Monitor the OBD STATUS for DTC P219A in the DTCs MENU with the HDS. Does the HDS indicate FAILED? YES -Go to step 20 . NO -If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates EXECUTING, keep driving until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 7 and recheck.
  9. Do a cylinder compression test (see «ENGINE COMPRESSION INSPECTION»(ref-360277-S30924537052010042800000) ). Is the compression of the problem cylinder lower than the other cylinders? YES -Adjust the engine compression (see «ENGINE COMPRESSION INSPECTION»(ref-360277-S30924537052010042800000) ), then go to step 23 . NO -Go to step 10.
  10. Inspect the valve clearance. Is the valve clearance OK? YES -Go to step 20. NO -If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates EXECUTING, keep driving until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 7 and recheck.
  11. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  12. Check under these conditions: A/C off All electrical loads off
  13. Do the Cylinder AF Test three times in the INSPECTION MENU with the HDS. Is the result OK? YES -Go to step 23 . NO -Go to step 14.
  14. Turn the ignition switch to LOCK (0).
  15. Exchange the injector from the problem cylinder with one from the another cylinder.
  16. Reconnect all connectors.
  17. Start the engine, and let it idle for 10 minutes.
  18. Check under these conditions: A/C off All electrical loads off
  19. Do the Cylinder AF Test three times in the INSPECTION MENU with the HDS. Is an injector failure indicated at the cylinder where the injector was exchanged? YES -Replace the faulty injector (see «INJECTOR REPLACEMENT»(ref-360284-S02580299972010042800000) ), then go to step 23 . NO -Go to step 22 .
  20. Inspect the valve clearances (see «VALVE CLEARANCE ADJUSTMENT»(ref-360277-S26337956302010042800000) ). Are the valve clearances OK? YES -Go to step 21. NO -Adjust the valve clearances (see «VALVE CLEARANCE ADJUSTMENT»(ref-360277-S26337956302010042800000) ), then go to step 23 and recheck. If DTC P219A is indicated go to step 21. If DTC P219A is not indicated, troubleshooting is complete.
  21. Check for a carbon or sludge in the EGR line. Is there a carbon or sludge? YES -Clean the intake manifold EGR port (see «EGR VALVE REPLACEMENT»(ref-360299-S04351118362010042800000) ) and the EGR pipe with throttle plate cleaner (see «EGR PIPE REMOVAL AND INSTALLATION»(ref-360299-S40147316082010042800000) ). Also, clean the passage inside the EGR valve with throttle plate cleaner, then go to step 23 . NO -Go to step 22.
  22. Check for carbon build-up in the intake manifold (see «INTAKE MANIFOLD REMOVAL AND INSTALLATION»(ref-360272-S27603810092010042800000) ), and the exhaust line (see «EXHAUST PIPE AND MUFFLER REPLACEMENT»(ref-360272-S11447236822010042800000) ). Is there carbon build-up in the intake manifold and/or the cylinder head? YES -Remove the carbon, then go to step 23 . NO -Check the engine for oil leaks. If needed, repair the engine, then go to step 23 . NOTE: If engine oil burning occurs, this code can be stored.
  23. Turn the ignition switch to ON (II).
  24. Reset the PCM with the HDS.
  25. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
  26. Test-drive the vehicle in the range of these recorded on-board snapshot parameters: VEHICLE SPEED ENGINE SPEED MAP SENSOR ECT SENSOR 1 APP SENSOR AF FB (ST FUEL TRIM) EGR COMMAND EGR LIFT
  27. Check for Pending or Confirmed DTCs with the HDS. Is DTC P219A indicated? YES -Check for poor connections or loose terminals at the injectors and the PCM, then go to step 1. NO -Go to step 28.
  28. Monitor the OBD STATUS for DTC P219A in the DTCs MENU with the HDS. Does the HDS 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 HDS indicates FAILED, go to step 1 and recheck. If the HDS indicates EXECUTING, keep driving until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 26 .

DTC P2A00: A/F Sensor (Sensor 1) 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 ).

  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. 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.
  4. 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 5 seconds
  5. Monitor the OBD STATUS for DTC P2A00 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 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 or NOT COMPLETED, go to step 3 and recheck.
  6. Turn the ignition switch to LOCK (0).
  7. Replace A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(ref-360284-S28994208912010042800000) ).
  8. Turn the ignition switch to ON (II).
  9. Reset the PCM with the HDS.
  10. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
  11. 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 5 seconds
  12. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2A00 indicated? YES -Check for poor connections or loose terminals at A/F sensor (Sensor 1) and the PCM, then go to step 1 . NO -Go to step 13 .
  13. Monitor the OBD STATUS for DTC P2A00 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 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 or NOT COMPLETED, go to step 11 .

F-CAN Circuit Troubleshooting

Note. Information marked with an asterisk (*) applies to the CANL line.

Scheme 231

Scheme 231: F-CAN Circuit Troubleshooting
Scheme 231: F-CAN Circuit Troubleshooting

Scheme 232

Scheme 232
Scheme 232

Scheme 233

Scheme 233
Scheme 233

Scheme 234

Scheme 234
Scheme 234

Scheme 235

Scheme 235
Scheme 235

Scheme 236

Scheme 236
Scheme 236

Scheme 237

Scheme 237
Scheme 237

Scheme 238

Scheme 238
Scheme 238

Scheme 239

Scheme 239
Scheme 239

Scheme 240

Scheme 240
Scheme 240

Scheme 241

Scheme 241
Scheme 241

Scheme 242

Scheme 242
Scheme 242

Scheme 243

Scheme 243
Scheme 243

Scheme 244

Scheme 244
Scheme 244

Scheme 245

Scheme 245
Scheme 245
  1. Turn the ignition switch to LOCK (0).
  2. Jump the SCS line with the HDS.
  3. Disconnect PCM connector A (44P), then disconnect the HDS.
  4. Measure the resistance between PCM connector terminals A36 and A37. Is there about 48-58 ohms? YES -Go to step 22 . NO -Go to step 5 .
  5. Disconnect these connectors: Gauge control module 32P (see «GAUGE CONTROL MODULE REPLACEMENT»(ref-360289-S06783299542010042800000) ) VSA modulator-control unit 47P (with VSA) (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360304-S31746215752010042800000) ) Yaw rate-lateral acceleration sensor 5P (with VSA) (see «YAW RATE-LATERAL ACCELERATION SENSOR REPLACEMENT»(ref-360304-S28032648402010042800000) ) ABS modulator-control unit 47P (with ABS) (see «ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360303-S07152304642010042800000) ) EPS control unit C (16P) (see «EPS CONTROL UNIT REMOVAL/INSTALLATION»(ref-360267-S28085177442010042800000) ) SRS unit A (39P) (see «SRS UNIT REPLACEMENT»(ref-360291-S15953747242010042800000) ) Motor control module (MCM) connector A (31P) (see «MOTOR CONTROL MODULE (MCM) REMOVAL/INSTALLATION»(ref-360262-S39768563302010042800000) ) TPMS control unit 20P (see «TPMS CONTROL UNIT REPLACEMENT»(ref-360305-S05525499902010042800000) )
  6. Check for continuity between PCM connector terminals A36 and A37. Is there continuity? YES -Repair a short in the wires between PCM terminals A36 and A37. NO -Go to step 7 .
  7. Check for continuity between PCM connector terminal A36 and gauge control module 32P connector terminal No. 20. Is there continuity? YES - With VSA: Go to step 8 . With ABS: Go to step 9 . NO -Repair an open in the wire between the PCM (A36) and the gauge control module.
  8. Check for continuity between PCM connector terminal A36 and VSA modulator-control unit 47P connector terminal No. 12. Is there continuity? YES -Go to step 10 . NO -Repair an open in the wire between the PCM (A36) and the VSA modulator-control unit
  9. Check for continuity between PCM connector terminal A36 and ABS modulator-control unit 47P connector terminal No. 12. Is there continuity? YES -Go to step 10 . NO -Repair an open in the wire between the PCM (A36) and the ABS modulator-control unit.
  10. Check for continuity between PCM connector terminal A36 and motor control module (MCM) connector terminal A30. Is there continuity? YES -Go to step 11 . NO -Repair an open in the wire between the PCM (A36) and the MCM.
  11. Check for continuity between PCM connector terminal A37 and gauge control module 32P connector terminal No. 19. Is there continuity? YES - With VSA: Go to step 12 . With ABS: Go to step 13 . NO -Repair an open in the wire between the PCM (A37) and the gauge control module.
  12. Check for continuity between PCM connector terminal A37 and VSA modulator-control unit 47P connector terminal No. 13. Is there continuity? YES -Go to step 14 . NO -Repair an open in the wire between the PCM (A37) and the VSA modulator-control unit.
  13. Check for continuity between PCM connector terminal A37 and ABS modulator-control unit 47P connector terminal No. 13. Is there continuity? YES -Go to step 14 . NO -Repair an open in the wire between the PCM (A37) and the ABS modulator-control unit.
  14. Check for continuity between PCM connector terminal A37 and motor control module (MCM) connector A (31P) terminal No. 31. Is there continuity? YES - With VSA: Go to step 15 . With ABS: Go to step 17 . NO -Repair an open in the wire between the PCM (A37) and the MCM.
  15. Reconnect the VSA modulator-control unit 47P connector.
  16. Measure the resistance between PCM connector terminals A36 and A37. Is there about 108-132 kohms? YES -Go to step 19 . NO -Substitute a known-good VSA modulator-control unit (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360304-S31746215752010042800000) ). If the HDS identifies the vehicle, replace the original VSA modulator-control unit (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360304-S31746215752010042800000) ).
  17. Reconnect the ABS modulator-control unit 47P connector.
  18. Measure the resistance between PCM connector terminals A36 and A37. Is there about 108-132 kohms? YES -Go to step 19 . NO -Substitute a known-good ABS modulator-control unit (see «ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360303-S07152304642010042800000) ). If the HDS identifies the vehicle, replace the original ABS modulator-control unit (see «ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360303-S07152304642010042800000) ).
  19. Disconnect the VSA modulator-control unit 47P connector (with VSA) or ABS modulator-control unit 47P connector (with ABS).
  20. Reconnect MCM connector A (31P).
  21. Measure the resistance between PCM connector terminals A36 and A37. Is there about 108-132 kohms? YES -Go to step 25 . NO -Substitute a known-good MCM (see «MOTOR CONTROL MODULE (MCM) REMOVAL/INSTALLATION»(ref-360262-S39768563302010042800000) ). If the HDS identifies the vehicle, replace the original MCM (see «MOTOR CONTROL MODULE (MCM) REMOVAL/INSTALLATION»(ref-360262-S39768563302010042800000) ).
  22. Disconnect these connectors: Gauge control module 32P (see «GAUGE CONTROL MODULE REPLACEMENT»(ref-360289-S06783299542010042800000) ) VSA modulator-control unit 47P (with VSA) (see «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360304-S31746215752010042800000) ) Yaw rate-lateral acceleration sensor 5P (with VSA) (see «YAW RATE-LATERAL ACCELERATION SENSOR REPLACEMENT»(ref-360304-S28032648402010042800000) ) ABS modulator-control unit 47P (with ABS) (see «ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360303-S07152304642010042800000) ) EPS control unit C (16P) (see «EPS CONTROL UNIT REMOVAL/INSTALLATION»(ref-360267-S28085177442010042800000) ) SRS unit A (39P) (see «SRS UNIT REPLACEMENT»(ref-360291-S15953747242010042800000) ) MCM connector A (31P) (see «MOTOR CONTROL MODULE (MCM) REMOVAL/INSTALLATION»(ref-360262-S39768563302010042800000) ) TPMS control unit 20P (see «TPMS CONTROL UNIT REPLACEMENT»(ref-360305-S05525499902010042800000) )
  23. Check for continuity between PCM connector terminal A36 and body ground. Is there continuity? YES -Repair a short in the wire between PCM terminal A36 and the gauge control module, the VSA modulator-control unit, the yaw rate-lateral acceleration sensor, the ABS modulator-control unit, the EPS control unit, the SRS unit, the TPMS control unit, the MCM, or the DLC. NO -Go to step 24 .
  24. Check for continuity between PCM connector terminal A37 and body ground. Is there continuity? YES -Repair a short in the wire between PCM terminal A37 and the gauge control module, the VSA modulator-control unit, the yaw rate-lateral acceleration sensor, the ABS modulator-control unit, the EPS control unit, the SRS unit, the TPMS control unit, the MCM, or the DLC. NO -Go to step 25 .
  25. Reconnect all connectors.
  26. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-360279-S26970937392010042800000) ).
  27. Disconnect the gauge control module 32P connector.
  28. 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»(ref-360289-S06783299542010042800000) ). NO - With VSA: Go to step 29 . With ABS: Go to step 37 .
  29. Turn the ignition switch to LOCK (0).
  30. Reconnect the gauge control module 32P connector.
  31. Disconnect the VSA modulator-control unit 47P connector.
  32. 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»(ref-360304-S31746215752010042800000) ). NO -Go to step 33 .
  33. Turn the ignition switch to LOCK (0).
  34. Reconnect the VSA modulator-control unit 47P connector.
  35. Disconnect the yaw rate-lateral acceleration sensor 4P connector.
  36. 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-LATERAL ACCELERATION SENSOR REPLACEMENT»(ref-360304-S28032648402010042800000) ). NO -Go to step 41 .
  37. Turn the ignition switch to LOCK (0).
  38. Reconnect the gauge control unit 32P connector.
  39. Disconnect the ABS modulator-control unit 47P connector.
  40. Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Replace the ABS modulator-control unit (see «ABS MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-360303-S07152304642010042800000) ). NO -Go to step 41 .
  41. Turn the ignition switch to LOCK (0).
  42. Reconnect the yaw rate-lateral acceleration sensor 5P connector (with VSA) or the ABS modulator-control unit 47P connector (with ABS).
  43. Disconnect EPS control unit connector C (16P).
  44. 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»(ref-360267-S28085177442010042800000) ). NO -Go to step 45 .
  45. Turn the ignition switch to LOCK (0).
  46. Reconnect EPS control unit connector C (16P).
  47. Disconnect SRS unit connector A (39P).
  48. 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»(ref-360291-S15953747242010042800000) ). NO -Go to step 49 .
  49. Turn the ignition switch to LOCK (0).
  50. Reconnect SRS unit connector A (39P).
  51. Disconnect the TPMS control unit 20P connector.
  52. 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»(ref-360305-S05525499902010042800000) ). NO -Go to step 53 .
  53. Turn the ignition switch to LOCK (0).
  54. Reconnect the TPMS control unit 20P connector.
  55. Disconnect MCM connector A (31P).
  56. Turn the ignition switch to ON (II), and read the HDS.

Does the HDS identify the vehicle?

YES -Replace the MCM (see MOTOR CONTROL MODULE (MCM) REMOVAL/INSTALLATION ).

NO -Update the PCM if it does not have the latest software, or substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM REPLACEMENT ).

MIL Circuit Troubleshooting

  1. Turn the ignition switch to ON (II).
  2. Do the gauge self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(ref-360289-S15994914432010042800000) ). Does the MIL flash? YES -Go to step 3 . NO -Substitute a known-good gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(ref-360289-S06783299542010042800000) ), then 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»(ref-360289-S06783299542010042800000) ).
  3. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-360279-S26970937392010042800000) ).
  4. 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»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(ref-360284-S39322714792010042800000) ).
  5. Turn the ignition switch to LOCK (0).
  6. Disconnect PCM connector A (44P), then disconnect the HDS.
  7. Check for continuity between PCM connector terminal A31 and body ground.

Scheme 246

Scheme 246
Scheme 246

Is there continuity?

YES -Repair a short in the wire between the PCM (A31) and the DLC.

NO -Update the PCM if it does not have the latest software (see PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM REPLACEMENT ).

DLC Circuit Troubleshooting

Note. If you suspect the HDS or 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 problem.

Scheme 247

Scheme 247: DLC Circuit Troubleshooting
Scheme 247: DLC Circuit Troubleshooting

Scheme 248

Scheme 248
Scheme 248

Scheme 249

Scheme 249
Scheme 249

Scheme 250

Scheme 250
Scheme 250

Scheme 251

Scheme 251
Scheme 251

Scheme 252

Scheme 252
Scheme 252

Scheme 253

Scheme 253
Scheme 253

Scheme 254

Scheme 254
Scheme 254

Scheme 255

Scheme 255
Scheme 255

Scheme 256

Scheme 256
Scheme 256

Scheme 257

Scheme 257
Scheme 257

Scheme 258

Scheme 258
Scheme 258

Scheme 259

Scheme 259
Scheme 259

Scheme 260

Scheme 260
Scheme 260

Scheme 261

Scheme 261
Scheme 261

Scheme 262

Scheme 262
Scheme 262

Scheme 263

Scheme 263
Scheme 263

Scheme 264

Scheme 264
Scheme 264

Scheme 265

Scheme 265
Scheme 265

Scheme 266

Scheme 266
Scheme 266

Scheme 267

Scheme 267
Scheme 267

Scheme 268

Scheme 268
Scheme 268

Scheme 269

Scheme 269
Scheme 269

Scheme 270

Scheme 270
Scheme 270

Scheme 271

Scheme 271
Scheme 271

Scheme 272

Scheme 272
Scheme 272

Scheme 273

Scheme 273
Scheme 273

Scheme 274

Scheme 274
Scheme 274

Scheme 275

Scheme 275
Scheme 275

Scheme 276

Scheme 276
Scheme 276

Scheme 277

Scheme 277
Scheme 277
  1. Turn the ignition switch to LOCK (0).
  2. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-360279-S26970937392010042800000) ).
  3. 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 25 .
  4. 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 system, go to step 5 . If the HDS does not communicate with the VSA system, go to step 7 . If the HDS does not communicate with the ABS system, go to step 9 . If the HDS does not communicate with the EPS system, go to step 11 . If the HDS does not communicate with the TPMS system, go to step 13 . If the HDS does not communicate with the IMMOBI (immobilizer) system, go to step 15 . If the HDS does not communicate with the BODY ELECTRICAL system, go to step 17 .
  5. Turn the ignition switch to LOCK (0).
  6. 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 an SRS indicator that comes on with no stored DTCs (see «SYMPTOM TROUBLESHOOTING INDEX»(ref-360291-S20053601732010042800000) ).
  7. Turn the ignition switch to LOCK (0).
  8. 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 symptom troubleshooting for an ABS indicator, brake system indicator, and VSA indicator that do not go off (see «SYMPTOM TROUBLESHOOTING INDEX»(ref-360304-S42308470722010042800000) ).
  9. Turn the ignition switch to LOCK (0).
  10. Turn the ignition switch to ON (II), and watch the ABS indicator. Does the ABS indicator come on and go off? YES -Go to step 17 . NO -Go to the ABS symptom troubleshooting for an ABS indicator and a brake system indicator that do not go off (see «SYMPTOM TROUBLESHOOTING INDEX»(ref-360303-S22541849242010042800000) ).
  11. Turn the ignition switch to LOCK (0).
  12. 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 symptom troubleshooting for an EPS indicator that does not go off with no stored DTCs (see «SYMPTOM TROUBLESHOOTING INDEX»(ref-360267-S28248085202010042800000) ).
  13. Turn the ignition switch to LOCK (0).
  14. 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 TPMS general troubleshooting information (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-360305-S37519938582010042800000) ).
  15. Turn the ignition switch to LOCK (0).
  16. 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's troubleshooting (see «SYMPTOM TROUBLESHOOTING INDEX»(ref-360283-S04362562122010042800000) ). NO -Go to step 17 .
  17. Do the gauge self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(ref-360289-S15994914432010042800000) ).
  18. Check the gauge display. Is Error 2 indicated? YES -Check for B-CAN system DTCs. NO -Go to step 19 .
  19. Turn the ignition switch to LOCK (0), then do the 12 volt battery terminal disconnection procedure (see «12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(ref-360280-S00079896582010042800000) ), and wait at least 3 minutes before starting work.
  20. Disconnect the HDS from the DLC.
  21. Check for continuity between DLC terminal No. 7 and body ground. Is there 5 ohms or less? YES -Go to step 22 . NO -Go to step 23 .
  22. Continue to check for continuity between DLC terminal No. 7 and body ground, while disconnecting these parts, one at a time: SRS unit connector A (39P) VSA modulator-control unit 47P connector ABS modulator-control unit 47P connector EPS control unit connector C (16P) TPMS control unit 20P connector Immobilizer-keyless control unit 7P connector Audio-navigation unit 24P connector Under-dash fuse/relay box connector Q (16P) Does continuity go away when one of the above parts is disconnected? YES -Replace the part caused an open when it was disconnected. NO -Repair a short in the wire between the DLC (K-line) and the VSA modulator-control unit, the ABS control unit, the SRS unit, the EPS control unit, the immobilizer-keyless control unit, the audio-navigation unit, or the under-dash fuse/relay box.
  23. Connect DLC terminal No. 7 to body ground with a jumper wire.
  24. Check for continuity between body ground and these connector terminals: CONTINUITY SPECIFICATION Connector Terminal SRS unit A (39P) No. 18 (BLU) VSA control unit 47P No. 10 (RED) ABS control unit 47P No. 10 (RED) EPS control unit C(16P) No. 16 (RED) TPMS control unit 20P No. 7 (BLU) Immobilizer-keyless control unit 7P No. 5 (BLU) Audio-navigation unit 24P No. 3 (BLU) Under-dash fuse/relay box Q (16P) No. 2 (BLU) Is there continuity between the DLC terminal and each of the terminals in the chart? YES -Replace the part that does not communicate with the HDS. NO -Repair an open in the wire between the DLC (K-line) and the appropriate connector.
  25. Check for B-CAN system DTCs without the HDS (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-360288-S07685226352010042800000) ). Is DTC U0029 and/or U0100 indicated? YES -Go to step 36 . NO -Go to step 26 .
  26. Turn the ignition switch to LOCK (0).
  27. Disconnect the HDS from the DLC.
  28. Measure the voltage between DLC terminal No. 16 and body ground. Is there battery voltage? YES -Go to step 29 . NO -Repair an open in the wire between DLC terminal No. 16 and the No. 1 BACK UP (10 A) fuse in the under-dash fuse/relay box.
  29. Measure the voltage between DLC terminals No. 4 and No. 16. Is there battery voltage? YES -Go to step 30 . NO -Repair an open in the wire between DLC terminal No. 4 and body ground (G502) (see «DASHBOARD WIRE HARNESS (VIEW OF MIDDLE SECTION) (WITH NAVIGATION)»(ref-360302-S30132402402010042800000) ).
  30. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-360279-S26970937392010042800000) ).
  31. Jump the SCS line with the HDS.
  32. Disconnect PCM connector A (44P).
  33. Disconnect the HDS from the DLC.
  34. Check for continuity between PCM connector terminal A36 and DLC terminal No. 6. Is there continuity? YES -Go to step 35 . NO -Repair an open in the wire between the PCM (A36) and DLC terminal No. 6.
  35. Check for continuity between PCM connector terminal A37 and DLC terminal No. 14. Is there continuity? YES -Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(ref-360284-S39322714792010042800000) ). NO -Repair an open in the wire between the PCM (A37) and DLC terminal No. 14.
  36. Try to start the engine. Does the engine start and idle smoothly? YES -Go to F-CAN circuit troubleshooting (see «F-CAN CIRCUIT TROUBLESHOOTING»(ref-360284-S15444734132010042800000) ). NO -Go to step 37 .
  37. Turn the ignition switch to LOCK (0).
  38. Check the No. 60 IGSW (50 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES -Repair an open in the wire between the No. 60 IGSW (50 A) fuse and the ignition switch. If the wire is OK go to step 39 . NO -Repair a short in the wire between the No. 60 IGSW (50 A) fuse and the under-dash fuse/relay box. Also replace the No. 60 IGSW (50 A) fuse.
  39. Inspect the No. 39 IGP (15 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES -Go to step 46 . NO -Go to step 40 .
  40. Remove the blown No. 39 IGP (15 A) fuse from the under-dash fuse/relay box.
  41. Open the fuse access panel (A), then remove PGM-FI main relay 1 (B) from the under-dash fuse/relay box.
  42. Check for continuity between body ground and PGM-FI main relay 1 4P connector terminals No. 2 and No. 3 individually. Is there continuity? YES -Replace the under-dash fuse/relay box (see «REMOVAL AND INSTALLATION»(ref-360306-S00499054042010042800000) ). NO -Go to step 45 .
  43. 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. 1 and body ground. PGM-FI main relay 2 PCM connector A (44P) Each injector 2P connector Camshaft position (CMP) sensor 3P connector Crankshaft position (CKP) sensor 3P connector Electronic throttle control system (ETCS) control relay Does continuity go away when one of the above parts or components is disconnected? YES -Replace the part that made the short to body ground go away when disconnected. If the part is the PCM, update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ), then recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is complete. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(ref-360284-S39322714792010042800000) ). Also replace the No. 39 IGP (15 A) fuse. NO -Go to step 44.
  44. Disconnect the connectors from these parts: PGM-FI main relay 2 PCM connector A (44P) Each injector 2P connector CMP sensor 3P connector CKP sensor 3P connector Electronic throttle control (ETCS) control relay
  45. Check for continuity between PGM-FI main relay 1 4P connector terminal No. 1 and body ground. Is there continuity? YES -Repair a short in the wire between PGM-FI main relay 1 and each part. Also replace the No. 39 IGP (15 A) fuse. NO -Replace PGM-FI main relay 1. Also replace the No. 39 IGP (15A) fuse.
  46. Inspect the No. 20 FUEL PUMP (15 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES -Go to step 56 . NO -Go to step 47 .
  47. Remove the blown No. 20 FUEL PUMP (15 A) fuse from the under-dash fuse/relay box.
  48. Remove PGM-FI main relay 2 (A) from the auxiliary under-hood fuse/relay box.
  49. Test PGM-FI main relay 2 (see «POWER RELAY TEST»(ref-360281-S09266277742010042800000) ). Is the relay OK? YES -Go to step 50 . NO -Replace PGM-FI main relay 2. Also replace the No. 20 FUEL PUMP (15 A) fuse.
  50. Check for continuity between PGM-FI main relay 2 4P connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 51 . NO -Go to step 54 .
  51. Jump the SCS line with the HDS.
  52. Disconnect PCM connector C (44P).
  53. Check for continuity between PCM connector terminal C36 and body ground. Is there continuity? YES -Repair a short in the wire between the No. 20 FUEL PUMP (15 A) fuse and the PCM (C36) or PGM-FI main relay 2. Also replace the No. 20 FUEL PUMP (15A) fuse. NO -Replace the No. 20 FUEL PUMP (15 A) fuse, and update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(ref-360284-S39322714792010042800000) ).
  54. Disconnect the fuel pump 4P connector (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(ref-360273-S15365231902010042800000) ).
  55. Check for continuity between fuel pump 4P connector terminal No. 2 and body ground. Is there continuity? YES -Repair a short in the wire between the fuel pump and PGM-FI main relay 2. Also replace the No. 20 FUEL PUMP (15A) fuse. NO -Check the fuel pump, and replace it if needed (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(ref-360273-S38097445532010042800000) ). Also replace the No. 20 FUEL PUMP (15 A) fuse.
  56. Jump the SCS line with the HDS.
  57. Disconnect PCM connectors A (44P) and C (44P).
  58. Turn the ignition switch to ON (II).
  59. Measure the voltage between PCM connector terminal C36 and body ground. Is there battery voltage? YES -Go to step 60 . NO -Repair an open in the wire between the No. 20 FUEL PUMP (15 A) fuse and the PCM (C36).
  60. Measure the voltage between PCM connector terminal A6 and body ground. Is there battery voltage? YES -Go to step 66 . NO -Go to step 61 .
  61. Turn the ignition switch to LOCK (0).
  62. Open the fuse access panel (A), then remove PGM-FI main relay 1 (B) from the under-dash fuse/relay box.
  63. Measure the voltage between PGM-FI main relay 1 4P connector terminal No. 3 and body ground. Is there battery voltage? YES -Go to step 64 . NO -Replace the under-dash fuse/relay box (see «REMOVAL AND INSTALLATION»(ref-360306-S00499054042010042800000) ).
  64. Connect PGM-FI main relay 1 4P connector terminal No. 4 to body ground with a jumper wire.
  65. Check for continuity between PCM connector terminal A6 and body ground. Is there continuity? YES -Test PGM-FI main relay 1 (see «POWER RELAY TEST»(ref-360281-S09266277742010042800000) ). If the relay is OK, update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(ref-360284-S39322714792010042800000) ). NO -Repair an open in the wire between the PCM (A6) and PGM-FI main relay 1.
  66. Turn the ignition switch to LOCK (0).
  67. Open the fuse access panel (A), then remove PGM-FI main relay 1 (B) from the under-dash fuse/relay box.
  68. Measure the voltage between PGM-FI main relay 1 4P connector terminal No. 2 and body ground. Is there battery voltage? YES -Go to step 69 . NO -Replace the under-dash fuse/relay box (see «REMOVAL AND INSTALLATION»(ref-360306-S00499054042010042800000) ).
  69. Connect PGM-FI main relay 1 4P connector terminal No. 1 to body ground with a jumper wire.
  70. Check for continuity between body ground and PCM connector terminals A8 and A43 individually. Is there continuity? YES -Go to step 71 . NO -Repair an open in the wire between the PCM (A8, A43) and PGM-FI main relay 1.
  71. Disconnect PCM connector B (44P).
  72. Check for continuity between body ground and PCM connector terminals B1, B36, C2, C40, and C44 individually. Is there continuity? YES -Go to step 73 . NO -Repair an open in the wire between the PCM (B1, B36, C2, C40, C44) and G101 (see «GROUND TO COMPONENTS INDEX»(ref-360307-S21637486982010042800000) ).
  73. Check for continuity between PCM connector terminal C39 and body ground. Is there continuity? YES -Go to step 74 . NO -Go to step 75 .
  74. Continue to check for continuity between PCM connector terminal C39 and body ground, while disconnecting these parts, one at a time: MAP sensor 3P connector CVT output (driven pulley) speed sensor 3P connector Does continuity go away when one of the above parts is disconnected? YES -Replace the part that caused an open when it was disconnected. NO -Repair a short in the wire between the PCM (C39) and the MAP sensor or the CVT output (driven pulley) speed sensor.
  75. Check for continuity between PCM connector terminal B6 and body ground. Is there continuity? YES -Go to step 76 . NO -Go to step 77 .
  76. Continue to check for continuity between PCM connector terminal B6 and body ground, while disconnecting these parts, one at a time: Rocker arm oil pressure sensor A and B 3P connectors EGR valve 5P connector CVT input (drive pulley) speed sensor 3P connector Vehicle speed sensor 3P connector Does continuity go away when one of the above parts is disconnected? YES -Replace the part that caused an open when it was disconnected. NO -Repair a short in the wire between the PCM (B6) and rocker arm oil pressure sensor A and B, the EGR valve, the CVT input (drive pulley) speed sensor, the CVT speed sensor.
  77. Check for continuity between PCM connector terminal C12 and body ground. Is there continuity? YES -Go to step 78 . NO -Go to step 79 .
  78. Continue to check for continuity between PCM connector terminal C12 and body ground, while disconnecting the throttle body 6P connector. Is there continuity? YES -Repair a short in the wire between the PCM (C12) and the throttle body. NO -Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-360274-S28268658552010042800000) ).
  79. Check for continuity between PCM connector terminal A25 and body ground. Is there continuity? YES -Go to step 80 . NO -Go to step 81 .
  80. Continue to check for continuity between PCM connector terminal A25 and body ground, while disconnecting the APP sensor 6P connector. Is there continuity? YES -Repair a short in the wire between the PCM (A25) and APP sensor A. NO -Replace the accelerator pedal module (see «ACCELERATOR PEDAL MODULE REMOVAL/INSTALLATION»(ref-360298-S26956269982010042800000) ).
  81. Check for continuity between PCM connector terminal A24 and body ground. Is there continuity? YES -Go to step 82 . NO -Go to step 83 .
  82. Continue to check for continuity between PCM connector terminal A24 and body ground, while disconnecting the APP sensor 6P connector. Is there continuity? YES -Repair a short in the wire between the PCM (A24) and APP sensor B. NO -Replace the accelerator pedal module (see «ACCELERATOR PEDAL MODULE REMOVAL/INSTALLATION»(ref-360298-S26956269982010042800000) ).
  83. Check for continuity between PCM connector terminal A19 and body ground. Is there continuity? YES -Go to step 84 . NO -Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(ref-360284-S39322714792010042800000) ).
  84. Continue to check for continuity between PCM connector terminal A19 and body ground, while disconnecting these parts, one at a time
  1. A/C pressure sensor 3P connectors
  2. Brake booster pressure sensor A 3P connector
  3. Brake booster pressure sensor B 3P connector
  4. FTP sensor 3P connector

Does continuity go away when one of the above parts is disconnected?

YES -Repair the part that caused an open when it was disconnected.

NO -Repair a short in the wire between the PCM (A19) and brake booster pressure sensor A, brake booster pressure sensor B, the A/C pressure sensor.

Scheme 278

Scheme 278: Injector Replacement
Scheme 278: Injector Replacement

Scheme 279

Scheme 279
Scheme 279
  1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(ref-360273-S39576641402010042800000) ).
  2. Remove the intake manifold (see «INTAKE MANIFOLD REMOVAL AND INSTALLATION»(ref-360272-S27603810092010042800000) ).
  3. Remove the nut (A).
  4. Disconnect the connectors (B) from the injectors, the intake side ignition coils, and the EGR valve.
  5. Remove the fuel rail mounting nuts (C) and the nut from the fuel rail (D), then remove the injectors and the fuel rail together.
  6. Remove the injector clips (E) from the injector (F).
  7. Remove the injectors from the fuel rail.
  8. Coat the new O-rings (black) (A) with clean engine oil, and insert the injectors (B) into the fuel rail (C).
  9. Install the injector clips (D).
  10. Coat the injector O-rings (E) with clean engine oil.
  11. Install the fuel rail and the injectors in the cylinder head (F).
  12. Install the fuel rail mounting nuts (G) and the bolt.
  13. Install the nut (H) with a new O-ring (I).
  14. Connect the connectors (J) on the injectors, the intake side ignition coils, and the EGR valve.
  15. Install the intake manifold (see «INTAKE MANIFOLD REMOVAL AND INSTALLATION»(ref-360272-S27603810092010042800000) ).
  16. 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 check for fuel leakage.

More articles — Pgm-Fi System