Fuel Supply System Acura TL IV

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DTC P0461: Fuel Level Sensor (Fuel Gauge Sending Unit) 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 ) Because it requires 152 miles (260 km) of driving without refueling to complete this diagnosis, this DTC P0461 cannot be duplicated during this troubleshooting

1. Test the fuel gauge sending unit, without SH-AWD system (see «FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) Is the fuel gauge sending unit OK? YES -Check for poor connections or loose terminals at the fuel gauge sending unit, the secondary fuel gauge sending unit (with SH-AWD) NO -Replace the fuel gauge sending unit (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) and the secondary fuel gauge sending unit (with SH-AWD) (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) ), then go to step 2
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
3. Reset the PCM with the HDS
4. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) )
5. Check for Pending or Confirmed DTCs with the HDS Are any Pending or Confirmed DTCs indicated? YES -Go to the indicated DTC's troubleshooting NO -Troubleshooting is complete

DTC P0462: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage (Without SH-AWD)

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

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Clear the DTC with the HDS, and wait 5 seconds
3. Check for Pending or Confirmed DTCs with the HDS Is DTC P0462 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 fuel gauge sending unit
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
6. Remove the access panel from the floor (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) )
7. Disconnect the fuel tank unit 4P connector
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
9. Clear the DTC with the HDS, and wait 5 seconds
10. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 indicated? YES -Replace the fuel gauge sending unit (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 23 NO -Go to step 11
11. Measure the voltage between fuel tank unit 4P connector terminal No 1 and body ground Is there battery voltage? YES -Go to step 16 NO -Go to step 12
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
13. Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) )
14. Disconnect the gauge control module 32P connector
15. Check for continuity between fuel tank unit 4P connector terminal No 1 and body ground Is there continuity? YES -Repair short in the wire between the gauge control module (signal line) and the fuel gauge sending unit, then go to step 24 NO -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ), then go to step 24
16. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
17. Remove the fuel tank unit (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) )
18. Connect the fuel tank unit 4P connector
19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
20. Clear the DTC with the HDS
21. Set the float (A) to the E position
22. Check the fuel gauge Does the fuel gauge move to the empty position? YES -Go to step 30 NO -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ), then go to step 23
23. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
24. Reconnect all connectors
25. Reinstall all parts removed in the reverse order of removal
26. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
27. Reset the PCM with the HDS
28. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) )
29. Check for Pending or Confirmed DTCs with the HDS Is DTC P0462 indicated? YES -Check for poor connections or loose terminals at the fuel gauge sending unit and the gauge control module, 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
30. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
31. Reinstall all parts removed in the reverse order of removal
32. Reconnect all connectors
33. Update the PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) )
34. Check for Pending or Confirmed DTCs with the HDS Is DTC P0462 indicated? YES -Check for poor connections or loose terminals at the fuel gauge sending unit and the gauge control module If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), 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 «ECM/PCM REPLACEMENT»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ) If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting

DTC P0462: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage (With SH-AWD)

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

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Clear the DTC with the HDS, and wait 5 seconds
3. Check for Pending or Confirmed DTCs with the HDS Is DTC P0462 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, the fuel gauge sending unit, and the secondary fuel gauge sending unit
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
6. Remove the access panel from the right side of the floor (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) )
7. Disconnect the secondary fuel gauge sending unit 4P connector
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
9. Clear the DTC with the HDS, and wait 5 seconds
10. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 indicated? YES -Check the secondary fuel gauge sending unit (see «SECONDARY FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 30 NO -Go to step 11
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
12. Remove the access panel from the left side of the floor (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
13. Disconnect the fuel tank unit 4P connector
14. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
15. Clear the DTC with the HDS, and wait 5 seconds.
16. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 indicated? YES -Go to step 20 NO -Go to step 17
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
18. Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ), then disconnect the gauge control module 32P connector
19. Check for continuity between fuel tank unit 4P connector terminal No 1 and body ground Is there continuity? YES -Repair short in the wire between the gauge control module (signal line) and the fuel gauge sending unit, then go to step 30 NO -Go to step 22
20. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
21. Check for continuity between fuel tank unit 4P connector terminal No 3 and body ground Is there continuity? YES -Repair short in the wire between the fuel gauge sending unit and the secondary fuel gauge sending unit, then go to step 30 NO -Check the fuel gauge sending unit (see «FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
22. Reconnect the gauge control module 32P connector.
23. Remove the fuel tank unit (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) ) and the secondary fuel gauge sending unit (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) )
24. Connect the fuel tank unit and the secondary fuel gauge sending unit 4P connectors
25. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
26. Clear the DTC with the HDS
27. Set the floats (A) to the E position Fuel gauge sending unit Secondary fuel gauge sending unit
28. Check the fuel gauge Does the gauge move to the empty position? YES -Go to step 36 NO -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ), then go to step 29
29. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
30. Reinstall ail parts removed in the reverse order of removal
31. Reconnect all connectors.
32. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
33. Reset the PCM with the HDS
34. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) )
35. Check for Pending or Confirmed DTCs with the HDS Is DTC P0462 indicated? YES -Check for poor connections or loose terminals at the gauge control module, the fuel gauge sending unit, and the secondary fuel gauge sending unit, 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
36. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
37. Reinstall all removed parts in the reverse order of removal
38. Reconnect all connectors
39. Update the PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) )
40. Check for Pending or Confirmed DTCs with the HDS Is DTC P0462 indicated? YES -Check for poor connections or loose terminals at the gauge control module, the fuel gauge sending unit, and the secondary fuel gauge sending unit If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), 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 «ECM/PCM REPLACEMENT»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ) If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting

DTC P0463: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage (Without SH-AWD)

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

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Clear the DTC with the HDS, and wait 5 seconds
3. Check for Pending or Confirmed DTCs in the DTCs MENU with the HDS Is DTC P0463 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 fuel gauge sending unit
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
6. Remove the access panel from the floor (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) )
7. Disconnect the fuel tank unit 4P connector
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
9. Measure the voltage between fuel tank unit 4P connector terminals No 1 and No 3 Is there battery voltage? YES -Go to step 17 NO -Go to step 10
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
11. Connect fuel tank unit 4P connector terminal No 3 to body ground with a jumper wire
12. Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) )
13. Disconnect the gauge control module 32P connector
14. Check for continuity between gauge control module 32P connector terminal No 2 and body ground Is there continuity? YES -Go to step 15 NO -Repair open in the wire between the gauge control module (GND line) and the fuel gauge sending unit, then go to step 27
15. Connect fuel tank unit 4P connector terminal No 1 to body ground with a jumper wire
16. Check for continuity between gauge control module 32P connector terminal No 22 and body ground Is there continuity? YES -Remove the jumper wire, then go to step 18 NO -Repair open in the wire between the gauge control module (signal line) and the fuel gauge sending unit, then go to step 27
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
18. Remove the fuel tank unit (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) )
19. Test the fuel gauge sending unit (see «FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) Is the fuel gauge sending unit OK? YES -Go to step 20 NO -Replace the fuel gauge sending unit (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 26
20. Connect the fuel tank unit 4P connector
21. Reconnect the gauge control module 32P connector
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
23. Clear the DTC with the HDS
24. Set the float (A) to the F position
25. Check the fuel gauge Does the gauge move to the full position? YES -Go to step 33 NO -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ), then go to step 26
26. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
27. Reconnect all connectors
28. Reinstall all parts removed in the reverse order of removal
29. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
30. Reset the PCM with the HDS
31. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) )
32. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 indicated? YES -Check for poor connections or loose terminals at the gauge control module and fuel gauge sending unit, 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
33. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
34. Reinstall all parts removed in the reverse order of removal
35. Reconnect all connectors
36. Update the PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) )
37. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 indicated? YES -Check for poor connections or loose terminals at the gauge control module and the fuel gauge sending unit If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), 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 «ECM/PCM REPLACEMENT»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ) If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting

DTC P0463: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage (With SH-AWD)

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

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Clear the DTC with the HDS, and wait 5 seconds
3. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 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, the fuel gauge sending unit, and the secondary fuel gauge sending unit
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
6. Remove the access panel from the left side of the floor (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
7. Disconnect the fuel tank unit 4P connector
8. Remove the access panel from the right side of the floor (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) )
9. Disconnect the secondary fuel gauge sending unit 4P connector
10. Check for continuity between fuel tank unit 4P connector terminal No 3 and the secondary fuel gauge sending unit 4P connector terminal No 1 Is there continuity? YES -Go to step 11 NO -Repair open in the wire between the fuel gauge sending unit and the secondary fuel gauge sending unit, then go to step 26
11. Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ), then disconnect the gauge control module 32P connector
12. Connect secondary fuel gauge sending unit 4P connector terminal No 3 to body ground with a jumper wire
13. Check for continuity between gauge control module 32P connector terminal No 2 and body ground Is there continuity? YES -Go to step 14 NO -Repair open in the wire between the gauge control module and the secondary fuel gauge sending unit, then go to step 26
14. Connect fuel tank unit 4P connector terminal No 1 to body ground with a jumper wire
15. Check for continuity between gauge control module 32P connector terminal No 22 and body ground Is there continuity? YES -Go to step 16 NO -Repair open in the wire between the gauge control module and the fuel gauge sending unit, then go to step 26
16. Disconnect the jumper wire from the fuel gauge sending unit 4P connector
17. Remove the fuel tank unit (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
18. Test the fuel gauge sending unit (see «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) Is the fuel gauge sending unit OK? YES -Go to step 19 NO -Replace the fuel gauge sending unit (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 26
19. Remove the secondary fuel gauge sending unit (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) )
20. Test the secondary fuel gauge sending unit (see «SECONDARY FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) Is the secondary fuel gauge sending unit OK? YES -Go to step 21 NO -Replace the secondary fuel gauge sending unit (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) ), then go to step 26
21. Reconnect the fuel tank unit 4P connector, the secondary fuel gauge sending unit 4P connector, and the gauge control module 36P connector
22. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
23. Set the floats (A) to the F position Fuel gauge sending unit Secondary fuel gauge sending unit
24. Check the fuel gauge Does the gauge move to the full position? YES -Go to step 32 NO -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ), then go to step 25
25. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
26. Reinstall all parts removed in the reverse order of removal
27. Reconnect all connectors
28. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
29. Reset the PCM with the HDS
30. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) )
31. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 indicated? YES -Check for poor connections or loose terminals at the gauge control module, the fuel gauge sending unit, and the secondary fuel gauge sending unit, 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
32. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
33. Reinstall all removed parts in the reverse order of removal
34. Reconnect all connectors
35. Update the PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) )
36. Check for Pending or Confirmed DTCs with the HDS Is DTC P0463 indicated? YES -Check for poor connections or loose terminals at the gauge control module, the fuel gauge sending unit, and the secondary fuel gauge sending unit If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), 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 «ECM/PCM REPLACEMENT»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ) If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting

DTC P0627: Fuel Pump Control Module 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 )

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Clear the DTC with the HDS
3. Turn the ignition switch to START (III) NOTE: This vehicle has an auto control mode starting system 11 keeps the starter motor running after the ignition switch or the engine start/stop button is released for 15 seconds, or until the engine starts
4. Check for Pending or Confirmed DTCs with the HDS Is DTC P0627 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 fuel pump control module, PGM-FI main relay 2, the fuel tank unit, and the PCM
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Check the No 2 FUEL PUMP (20 A) fuse in under-dash fuse/relay box Is the fuse OK? YES -Go to step 7 NO -Repair short in the wire between PGM-FI main relay 2 and the No 9 FUEL PUMP (20 A) fuse Also replace the No 9 FUEL PUMP (20 A) fuse, then go to step 76
7. Disconnect the fuel pump control module 10P connector (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between fuel pump control module 10P connector terminals No 3 and No 8 within 2 seconds Is there battery voltage? YES -Go to step 30 NO -Go to step 9
9. Check for continuity between fuel pump control module 10P connector terminal No 8 and body ground Is there continuity? YES -Go to step 10 NO -Repair open in the wire between the fuel pump control module (GND line) and G602, then go to step 76
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
11. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#dashboard) ), then remove PGM-FI main relay 2 (A) from the under-dash fuse/relay box
12. Test PGM-FI main relay 2 (see «POWER RELAY TEST»(/acura/tl/iv-2008-2011/remont/body-electrical/#relays__power-relay-test) ) Is PGM-FI main relay 2 OK? YES -Go to step 13 NO -Replace PGM-FI main relay 2, then go to step 76
13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
14. Measure the voltage between PGM-FI main relay 2 4P connector terminal No 4 and body ground Is there battery voltage? YES -Go to step 21 NO -Go to step 15
15. Remove PGM-FI main relay 1 (A) and ETCS control relay (B) from the under-hood fuse/relay box
16. Jump the SCS line with the HDS
17. Disconnect the engine wire harness 13P connector (C101)
18. Disconnect the driver's under-dash fuse/relay box connector F (33P)
19. Connect PGM-FI main relay 1 4P connector terminal No 2 to body ground with a jumper wire
20. Check for continuity between driver's under-dash fuse/relay box connector F (33P) terminal No 31 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/INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-dash-fuserelay-box) ), then go to step 76 NO - Repair open in the wire between the under-hood fuse/relay box and the driver's under-dash fuse/relay box, then go to step 76 If the wire is OK, replace the under-hood fuse/relay box (see «REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-hood-fuserelay-box__removal-and-installation) ), then go to step 76
21. Measure the voltage between PGM-FI main relay 2 4P connector terminal No 2 and body ground Is there battery voltage? YES -Go to step 22 NO -Replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-dash-fuserelay-box) ), then go to step 76
22. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
23. Connect PGM-FI main relay 2 4P connector terminals No 1 and No 2 with a jumper wire
24. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between fuel pump control module 10P connector terminal No 3 and body ground Is there battery voltage? YES -Go to step 25 NO - Repair open in the wire between the driver's under-dash fuse/relay box and the fuel pump control module, then go to step 76 If needed, replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-dash-fuserelay-box) ), then go to step 76
25. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
26. Jump the SCS line with the HDS
27. Disconnect PCM connector A (49P)
28. Connect PGM-FI main relay 2 4P connector terminal No 3 to body ground with a jumper wire
29. Check for continuity between PCM connector terminal A11 and body ground Is there continuity? YES -Go to step 81 NO -Repair open in the wire between the PCM (AID and PGM-FI main relay 2, then go to step 76
30. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
31. Reconnect the fuel pump control module 10P connector (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
32. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
33. Clear the DTC with the HDS
34. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
35. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and check for sound from the fuel pump within 2 seconds Does the fuel pump operate? YES -Go to step 36 NO -Go to step 56
36. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
37. Disconnect the fuel pump control module 10P connector
38. Check for continuity between fuel pump control module 10P connector terminal No 4 and body ground Is there continuity? YES -Go to step 39 NO -Go to step 42
39. Jump the SCS line with the HDS
40. Disconnect PCM connector A (49P)
41. Check for continuity between PCM connector terminal A42 and body ground Is there continuity? YES -Repair short in the wire between the PCM (A42) and the fuel pump control module, then go to step 76 NO -Go to step 81
42. Jump the SCS line with the HDS
43. Disconnect PCM connector A (49P)
44. Connect fuel pump control module 10P connector terminal No 4 to body ground with a jumper wire
45. Check for continuity between PCM connector terminal A42 and body ground Is there continuity? YES -Go to step 46 NO -Repair open in the wire between the PCM (A42) and the fuel pump control module, then go to step 76
46. Remove the jumper wire from the fuel pump control module 10P connector
47. Reconnect the fuel pump control module 10P connector and PCM connector A (49P)
48. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
49. Measure the voltage between fuel pump control module 10P connector terminal No 4 and body ground Is there about 8 V or more? YES -Go to step 50 NO -Replace the fuel pump control module (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 75
50. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
51. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
52. Remove the access panel from the left side of the floor (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
53. Disconnect the fuel tank unit 4P connector
54. Disconnect the fuel pump control module 10P connector
55. Check for continuity between fuel pump control module 10P connector terminal No 7 and body ground Is there continuity? YES -Repair short in the wire between the fuel pump control module (FP-line) and the fuel tank unit, then go to step 76 NO -Substitute a known-good fuel pump control module (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 75 and recheck If DTC P0627 is not indicated, replace the original fuel pump control module (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 76 If DTC P0627 is indicated, go to step 81
56. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
57. Disconnect the fuel pump control module 10P connector (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
58. Check for continuity between fuel pump control module 10P connector terminal No 5 and body ground Is there continuity? YES -Go to step 59 NO -Go to step 62
59. Jump the SCS line with the HDS
60. Disconnect PCM connector A (49P)
61. Check for continuity between PCM connector terminal A43 and body ground Is there continuity? YES -Repair short in the wire between the PCM (A43) and the fuel pump control module, then go to step 76 NO -Go to step 81
62. Reconnect the fuel pump control module 10P connector
63. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between fuel pump control module 10P connector terminal No 5 and body ground within 2 seconds Is there battery voltage? YES -Go to step 64 NO -Replace the fuel pump control module (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 76
64. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
65. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
66. Remove the access panel from left side of the floor (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
67. Disconnect the fuel tank unit 4P connector
68. Disconnect the fuel pump control module 10P connector (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
69. Connect between fuel tank unit 4P connector terminal No 2 to body ground with a jumper wire
70. Check for continuity between fuel pump control module 10P connector terminal No 6 and body ground Is there continuity? YES -Go to step 71 NO -Repair open in the wire between the fuel pump control module (FP+ line) and the fuel tank unit, then go to step 76
71. Connect fuel tank unit 4P connector terminal No 4 to body ground with a jumper wire
72. Check for continuity between fuel pump control module 10P connector terminal No 7 and body ground Is there continuity? YES -Go to step 73 NO -Repair open in the wire between the fuel pump control module (FP-line) and the fuel tank unit, then go to step 76
73. Remove the jumper wire from fuel tank unit 4P connector terminal No 4, and reconnect the fuel pump control module 10P connector
74. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between fuel tank unit 4P connector terminal No 2 and body ground within 2 seconds Is there battery voltage? YES -Replace the fuel pump (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 75 NO -Substitute a known-good fuel pump control module (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 75 and recheck If DTC P0627 is not indicated, replace the original fuel pump control module (see «FUEL PUMP CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then go to step 75 If DTC P0627 is indicated, go to step 81
75. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
76. Reconnect all connectors
77. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
78. Reset the PCM with the HDS
79. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) )
80. Check for Pending or Confirmed DTCs with the HDS Is DTC P0627 indicated? YES -Check for poor connections or loose terminals at the fuel pump control module, PGM-FI main relay 2, the fuel tank 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
81. Reconnect all connectors
82. Update the PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) )
83. Check for Pending or Confirmed DTCs with the HDS Is DTC P0627 indicated? YES -Check for poor connections or loose terminals at the fuel pump control module, PGM-FI main relay 2, the fuel tank unit, and the PCM If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), 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 «ECM/PCM REPLACEMENT»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ) If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting

Fuel Pump Circuit Troubleshooting

If you suspect a problem with the fuel pump, check that the fuel pump actually runs, when it is on, you will hear some noise if you listen to the fuel fill port with the fuel fill cap removed The fuel pump should run for 2 seconds when the ignition switch is turned to ON (II), or press the engine start/stop button to select the ON mode If the fuel pump does not make noise, check as follows

Scheme 51

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Scheme 61

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Scheme 63

Scheme 64

Scheme 65

Scheme 66

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
2. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#dashboard) )
3. Remove PGM-FI main relay 2 (A) from the driver's under-dash fuse/relay box
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
5. Measure the voltage between PGM-FI main relay 2 4P connector terminal No 4 and body ground Is there battery voltage? YES -Go to step 13 NO -Go to step 6
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
7. Remove PGM-FI main relay 1 (A) and the ETCS control relay (B) from the under-hood fuse/relay box
8. Jump the SCS line with the HDS
9. Disconnect the engine wire harness 13P connector (C101)
10. Disconnect driver's under-dash fuse/relay box connector F (33P)
11. Connect PGM-FI main relay 1 4P connector terminal No 2 to body ground with a jumper wire
12. Check for continuity between driver's under-dash fuse/relay box connector F (33P) terminal No 31 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/INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-dash-fuserelay-box) ) NO - Repair open in the wire between the under-hood fuse/relay box and the driver's under-dash fuse/relay box If the wire is OK, replace the under-hood fuse/relay box (see «REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-hood-fuserelay-box__removal-and-installation) )
13. Measure the voltage between PGM-FI main relay 2 4P connector terminal No 2 and body ground Is there battery voltage? YES -Go to step 14 NO - Check the No 9 FUEL PUMP (20 A) fuse in the driver's under-dash fuse/relay box If the fuse is OK, replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-dash-fuserelay-box) )
14. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
15. Connect PGM-FI main relay 2 4P connector terminal No 3 to body ground with a jumper wire
16. Jump the SCS line with the HDS
17. Disconnect PCM connector A (49P)
18. Check for continuity between body ground and PCM connector terminal A11 Is there continuity? YES -Go to step 19 NO -Repair open in the wire between PGM-FI main relay 2 and the PCM (A11)
19. Reinstall PGM-FI main relay 2
20. Connect PCM connector terminal A6 to body ground with a jumper wire
21. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
22. Measure the voltage between PCM connector terminal A11 and body ground Is there battery voltage? YES -Go to step 23 NO -Replace PGM-FI main relay 2
23. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
24. Reconnect PCM connector A (49P)
25. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between driver's under-dash fuse/relay box connector F (33P) terminal No 22 and body ground within 2 seconds Is there battery voltage? YES -Update the PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2008-2011/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then recheck If the symptom/indication goes away with a known-good PCM, replace the original PCM (see «ECM/PCM REPLACEMENT»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ) NO -Go to step 26
26. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between driver's under-dash fuse/relay box connector F (33P) terminal No 22 and body ground after 2 seconds Is there battery voltage? YES -Go to step 27 NO -If needed, replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-dash-fuserelay-box) ), then go to step 27
27. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
28. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
29. Remove the access panel from the floor (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) )
30. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between fuel tank unit 4P connector terminal No 2 and body ground within 2 seconds Is there battery voltage? YES -Go to step 35 NO -Go to step 31
31. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
32. Remove PGM-FI main relay 2
33. Connect PGM-FI main relay 2 4P connector terminals No 1 and No 2 with a jumper wire
34. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and measure the voltage between fuel tank unit 4P connector terminal No 2 and body ground Is there battery voltage? YES -Replace PGM-FI main relay 2 NO - Repair open in the wire between the driver's under-dash fuse/relay box (D10) and the fuel tank unit 4P connector If the wire is OK, replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/body-electrical/#under-dash-fuserelay-box) )
35. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
36. Check for continuity between fuel tank unit 4P connector terminal No 4 and body ground Is there continuity? YES -Replace the fuel pump (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) NO -Repair open in the wire between the fuel tank unit 4P connector and G602: Without SH-AWD (see «LEFT SIDE WIRE HARNESS (WITHOUT SH-AWD)»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__left-side-wire-harness-without-sh-awd) ). With SH-AWD (see «LEFT SIDE WIRE HARNESS (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__left-side-wire-harness-with-sh-awd) ).

Fuel Pressure Relieving

Before disconnecting fuel lines or hoses, relieve pressure from the system by disabling the fuel pump and disconnecting the fuel line/quick connect fitting in the engine compartment

Scheme 67

Scheme 68

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Scheme 70

1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
3. Make sure the HDS communicates with the PCM If it doesn't, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system__dlc-circuit-troubleshooting) )
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the fuel fill cap to relieve the pressure in the fuel tank
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
7. From the INSPECTION MENU of the HDS, select Fuel Pump OFF, then start the engine, and let it idle until it stalls NOTE: Do not allow the engine to idle above 1,000 rpm or the PCM will continue to operate the fuel pump Pending or Confirmed DTC may be set during this procedure Check for DTCs, and clear them as needed (see «MIL CIRCUIT TROUBLESHOOTING»(/acura/tl/iv-2008-2011/remont/testing-diagnostics/#pgm-fi-system) )
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
9. Do the battery terminal disconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/tl/iv-2008-2011/remont/body-electrical/#battery) )
10. Remove the cover (A) and the quick-connect fitting cover (B), without SH-AWD system (see «FUEL LINE/QUICK-CONNECT FITTING REMOVAL»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
11. Check the quick-connect fitting for dirt, and clean it if needed
12. Place a rag or a shop towel over the quick-connect fitting (A)
13. Disconnect the quick-connect fitting (A) Hold the connector (B) with one hand, and squeeze the retainer tabs (C) with the other hand to release them from the locking tabs (D) Pull the connector off NOTE: Be careful not to damage the line (E) or other parts Do not use tools If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily Do not remove the retainer from the line, once removed, the retainer must be replaced with a new one
14. After disconnecting the quick-connect fitting, check it for dirt or damage, without SH-AWD system (see step 5 on «WITHOUT SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see step 5 on «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
15. Do the battery terminal reconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/tl/iv-2008-2011/remont/body-electrical/#battery) )

Scheme 71

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Scheme 73

Scheme 74

1. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#dashboard) )
2. Remove PGM-FI main relay 2 (A) from the driver's under-dash fuse/relay box
3. Start the engine, and let it idle until it stalls NOTE: If any DTCs are stored, clear and ignore them
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the fuel fill cap to relieve the pressure in the fuel tank
6. Do the battery terminal disconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/tl/iv-2008-2011/remont/body-electrical/#battery) )
7. Remove the cover (A) and the quick-connect fitting cover (B), without SH-AWD system (see «FUEL LINE/QUICK-CONNECT FITTING REMOVAL»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
8. Check the quick-connect fitting for dirt, and clean it if needed
9. Place a rag or a shop towel over the quick-connect fitting (A)
10. Disconnect the quick-connect fitting (A) Hold the connector (B) with one hand, and squeeze the retainer tabs (C) with the other hand to release them from the locking tabs (D) Pull the connector off NOTE: Be careful not to damage the line (E) or other parts Do not use tools If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily Do not remove the retainer from the line, once removed, the retainer must be replaced with a new one
11. After disconnecting the quick-connect fitting, check it for dirt or damage, without SH-AWD system (see step 5 on «WITHOUT SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see step 5 on «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
12. Do the battery terminal reconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/tl/iv-2008-2011/remont/body-electrical/#battery) )

Fuel Pressure Test

Special Tools Required

1. Fuel pressure gauge 07406-004000B
2. Fuel pressure gauge attachment set 07AAJ-S6MA150

Scheme 75

1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) )
2. Attach the fuel pressure gauge set and the fuel pressure gauge
3. Start the engine, and let it idle If the engine starts, go to step 5 If the engine does not start, go to step 4
4. Check to see if the fuel pump is running Listen to the fuel filler port with the fuel fill cap removed The fuel pump should run for 2 seconds when the ignition switch is first turned on (II) or engine start/stop button to select the ON mode If the pump runs, go to step 5 '09 model without SH-AWD, '10 - 11 model: If the pump does not run, do the fuel pump circuit troubleshooting (see «FUEL PUMP CIRCUIT TROUBLESHOOTING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-pump-circuit-troubleshooting) ) '09 model with SH-AWD, If the pump does not run, refer to the «DTC TROUBLESHOOTING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system)
5. Read the fuel pressure gauge Fuel pressure should be. 392-441 kPa (4.0-4.5 kgf/cm 2 , 57-64 psi) If the pressure is OK, the test is complete If the pressure is out of specification, replace the fuel pressure regulator, without SH-AWD system (see «FUEL PRESSURE REGULATOR REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «FUEL PRESSURE REGULATOR REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) and the fuel filter, without SH-AWD system (see «FUEL FILTER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «FUEL FILTER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), then recheck the fuel pressure

Transfer Fuel Pump Test

Special Tools Required

Vacuum pump/gauge, 0-30 in Hg, Snap-on YA4000A or equivalent, commercially available

Scheme 76

Scheme 77

Scheme 78

1. Remove the secondary fuel gauge sending unit (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) )
2. Connect a vacuum pump/gauge, 0-30 in Hg, to the transfer tube (A)
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
4. From the INSPECTION MENU of the HDS, select Fuel Pump ON
5. Read the vacuum pump/gauge, 0-30 in Hg The vacuum should be 4.0 kPa (1.2 in Hg, 30 mmHg) If the vacuum is OK, the transfer fuel pump and the transfer tube is OK If the vacuum is out of specification, go to step 6
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
7. Install the secondarily fuel gauge sending unit (see «INSTALLATION (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
8. Remove the fuel tank unit (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
9. Connect the vacuum pump/gauge, 0-30 in Hg, to the fuel tank unit (A)
10. Lower the fuel tank unit (A) into the fuel tank until the pick up screen is submerged in the fuel
11. Connect the fuel tank unit 4P connector (B)
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
13. From the INSPECTION MENU of the HDS, select Fuel Pump ON
14. Read the vacuum pump/gauge, 0-30 in Hg The vacuum should be 4.0 kPa (1.2 in Hg, 30 mmHg)

1. If the vacuum is OK, replace the transfer tube, then recheck the fuel vacuum
2. If the vacuum is out of specification, replace the fuel tank unit (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) ), then recheck the fuel vacuum

Fuel Tank Draining

1. Remove the fuel tank unit, without SH-AWD system (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) ), with SH-AWD system (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
2. Using a hand pump, a hose, and a container suitable for fuel, draw the fuel from the fuel tank
3. Reinstall the fuel tank unit, without SH-AWD system (see «INSTALLATION (WITHOUT SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «INSTALLATION (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )

Without SH-AWD

Check the fuel system lines and hoses for damage, leaks, and deterioration Replace any damaged parts

Scheme 79

Check all clamps, and make sure they are properly positioned and tightened

Scheme 80

With SH-AWD

Check the fuel system lines and hoses for damage, leaks, and deterioration Replace any damaged parts

Scheme 81

Check all clamps, and make sure they are properly positioned and tightened

Scheme 82

The fuel line/quick-connect fittings (A, B, C, D, and E) connect the fuel joint hose (F) to the fuel feed hose (G), the fuel feed hose to the fuel line (H), the fuel line (I) to the fuel tank unit (J), the fuel vapor line (K) to the EVAP canister (L), and the fuel tank vapor recirculation tube (M) to the fuel fill pipe (N) When removing or installing the fuel feed hose, the fuel tank unit, or the fuel tank, or when disconnecting or connecting the quick-connect fittings, pay attention to the following

1. The fuel feed hoses, the fuel line, and the quick-connect fittings are not heat-resistant, be careful not to damage them during welding or other heat-generating procedures
2. The fuel feed hoses, the fuel line, and the quick-connect fittings are not acid-proof, do not touch them with a shop towel that was used for wiping battery electrolyte Replace them if they come in contact with electrolyte or something similar
3. When connecting or disconnecting the fuel feed hoses, the fuel line, and the quick-connect fittings, be careful not to bend 01 twist them excessively Replace them if they are damaged

Scheme 83

Scheme 84

A disconnected quick-connect fitting can be reconnected, but the retainer on the mating line cannot be reused once it has been removed from the line Replace the retainer when

1. replacing the fuel rail
2. replacing the fuel line
3. replacing the fuel pump
4. replacing the fuel filter
5. replacing the EVAP canister
6. replacing the fuel fill pipe
7. replacing the fuel tank
8. it has been removed from the line
9. it is damaged
10. Use the same manufacturer retainer and the same size retainer when the replacing the retainer

RETAINER DIAMETER REFERENCE

The fuel line/quick-connect fittings (A, B, C, D, E, F, and G) connect the fuel joint hose (H) to the fuel feed hose (I), the fuel feed hose to the fuel line (J), the fuel line (K) to the fuel tank unit (L), the fuel vapor line (M) to the EVAP canister (N), the fuel vent tube (0) to the fuel vent tube B (P) and the fuel tank vapor recirculation tube (Q) and fuel fill neck tube (R) to the fuel fill pipe (S) When removing or installing the fuel feed hose, the fuel tank unit, or the fuel tank, or when disconnecting or connecting the quick-connect fittings, pay attention to the following

1. The fuel feed hoses, the fuel line, the and quick-connect fittings are not heat-resistant, be careful not to damage them during welding or other heat-generating procedures
2. The fuel feed hoses, the fuel line, the and quick-connect fittings are not acid-proof, do not touch them with a shop towel that was used for wiping battery electrolyte Replace them if they come in contact with electrolyte or something similar
3. When connecting or disconnecting the fuel feed hoses, the fuel line, the and quick-connect fittings, be careful not to bend or twist them excessively Replace them if they are damaged

Scheme 85

Scheme 86

Scheme 87

A disconnected quick-connect fitting can be reconnected, but the retainer on the mating line cannot be reused once it has been removed from the line Replace the retainer when

1. replacing the fuel rail
2. replacing the fuel line
3. replacing the fuel pump
4. replacing the fuel filter
5. replacing the EVAP canister
6. replacing the fuel fill pipe
7. replacing the fuel tank
8. it has been removed from the line
9. it is damaged
10. Use the same manufacturer retainer and the same size retainer when the replacing the retainer

RETAINER DIAMETER REFERENCE

Note. Before you work on the fuel lines and fittings, read the Fuel Line/Quick-Connect Fitting Precautions (see FUEL LINE/QUICK-CONNECT FITTING PRECAUTIONS )

Scheme 88

Scheme 89

Scheme 90

Scheme 91

Scheme 92

Scheme 93

1. If equipped, remove the quick-connect fitting cover from the fuel line Raise the cover (A) from the fuel line (B), and remove it as shown
2. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) )
3. Check the fuel quick-connect fittings (A) for dirt, and clean them if needed
4. Place a rag or a shop towel over the quick-connect fitting Hold the connector (A) with one hand, and squeeze the retainer tabs (B) with the other hand to release them from the locking tabs (C) Pull the connector off NOTE: Be careful not to damage the line (D) or other parts Do not use tools If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily Do not remove the retainer from the line, once removed, the retainer must be replaced with a new one
5. Check the contact area (A) of the line (B) for dirt or damage If it is dirty, clean the connector, and dry it with the compressed air If it is rusty or damaged, replace the fuel filter or the fuel feed line
6. To prevent damage and keep foreign matter out, cover the disconnected connector and line ends with plastic bags (A) NOTE: The retainer cannot be reused once it has been removed from the line Replace the retainer when replacing the fuel rail replacing the fuel line replacing the fuel pump replacing the fuel filter replacing the EVAP canister replacing the fuel fill pipe replacing the fuel tank it has been removed from the line it is damaged

Note. Before you work on the fuel lines and fittings, read the Fuel Line/Quick-Connect Fitting Precautions (see WITH SH-AWD )

Scheme 94

Scheme 95

Scheme 96

Scheme 97

Scheme 98

Scheme 99

1. If equipped, remove the quick-connect fitting cover from the fuel line Raise the cover (A) from the fuel line (B), and remove it as shown
2. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) )
3. Check the fuel quick-connect fittings (A) for dirt, and clean them if needed
4. Place a rag or a shop towel over the quick-connect fitting Hold the connector (A) with one hand, and squeeze the retainer tabs (B) with the other hand to release them from the locking tabs (C) Pull the connector off NOTE: Be careful not to damage the line (D) or other parts Do not use tools If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily Do not remove the retainer from the line, once removed, the retainer must be replaced with a new one
5. Check the contact area (A) of the line (B) for dirt or damage If it is dirty, clean the connector, and dry it with the compressed air If it is damaged, replace the fuel filter or the fuel feed line
6. To prevent damage and keep foreign matter out, cover the disconnected connector and line ends with plastic bags (A)

Note. The retainer cannot be reused once it has been removed from the line

Replace the retainer when

1. replacing the fuel rail
2. replacing the fuel line
3. replacing the fuel pump
4. replacing the fuel filter
5. replacing the EVAP canister
6. replacing the fuel fill pipe
7. replacing the fuel tank
8. it has been removed from the line
9. it is damaged

Scheme 100

Note. Before you work on the fuel lines and fittings, read the "Fuel Line/Quick-Connect Fitting Precautions" (see FUEL LINE/QUICK-CONNECT FITTING PRECAUTIONS )

Scheme 101

Scheme 102

Scheme 103

Scheme 104

Scheme 105

Scheme 106

Scheme 107

Scheme 108

Scheme 109

Scheme 110

1. Check the contact area (A) of the line (B) for dirt or damage, and clean it if needed
2. Insert a new retainer (A) into the connector (B) if the retainer is damaged, or after replacing the fuel rail replacing the fuel line replacing the fuel pump replacing the fuel filter replacing the EVAP canister replacing the fuel fill pipe replacing the fuel tank removing the retainer from the line Use the same manufacturer retainer and the same size retainer when the replacing the retainer (see «FUEL LINE/QUICK-CONNECT FITTING PRECAUTIONS»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
3. Before connecting a new fuel line/quick-connect fitting assembly (A), remove the old retainer (B) from the mating line
4. Align the quick-connect fittings with the line (A), and align the retainer locking tabs (B) with the connector grooves (C) Then press the quick-connect fittings onto the line until both retainer tabs lock with a clicking sound NOTE: If it is hard to connect, put a small amount of new engine oil on the line end Connection with new retainer Connection to new fuel line Reconnection to existing retainer
5. When you reconnect the connector with the old retainer, make sure the connection is secure and the tabs (A) are firmly locked into place, check visually and also by pulling the connector (B) When you replace the fuel line with a new one, make sure you remove the ring pull (C) upwards after you confirm the connection is secure NOTE: Before you remove the ring pull, make sure the fuel line connection is secure If the connection is not secure, the ring pull could break when you try to remove it Connection to new fuel line
6. Reconnect the negative cable to the battery, and turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode (but do not operate the starter motor) The fuel pump will run for about 2 seconds, and fuel pressure will rise Repeat this two or three times, then checking for fuel leaks
7. If equipped, install the quick-connect fitting cover Set the groove of the cover (A) on the fuel line (B) as shown, then install it Make sure the cover is firmly locked in place

Note. Before you work on the fuel lines and fittings, read the "Fuel Line/Quick-Connect Fitting Precautions" (see WITH SH-AWD )

Scheme 111

Scheme 112

Scheme 113

Scheme 114

Scheme 115

Scheme 116

Scheme 117

Scheme 118

Scheme 119

Scheme 120

Scheme 121

Scheme 122

Scheme 123

1. Check the contact area (A) of the line (B) for dirt or damage, and clean it if needed
2. Insert a new retainer (A) into the connector (B) if the retainer is damaged, or after replacing the fuel rail replacing the fuel line replacing the fuel pump replacing the fuel filter replacing the EVAP canister replacing the fuel fill pipe replacing the fuel tank removing the retainer from the line Use the same manufacturer retainer and the same size retainer when the replacing the retainer (see «FUEL LINE/QUICK-CONNECT FITTING PRECAUTIONS»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
3. Before connecting a new fuel line/quick-connect fitting assembly (A), remove the old retainer (B) from the mating line
4. Align the quick-connect fittings with the line (A), and align the retainer locking tabs (B) with the connector grooves (C) Then press the quick-connect fittings onto the line until both retainer tabs lock with a clicking sound NOTE: If it is hard to connect, put a small amount of new engine oil on the line end Connection with new retainer Connection with new retainer Fuel fill neck tube Connection to new fuel line Connection to new fuel line Fuel fill neck tube Reconnection to existing retainer Reconnection to existing retainer. Fuel fill neck tube
5. When you reconnect the connector with the old retainer, make sure the connection is secure and the tabs (A) are firmly locked into place, check visually and also by pulling the connector (B) When you replace the fuel line with a new one, make sure you remove the ring pull (C) upwards after you confirm the connection is secure NOTE: Before you remove the ring pull, make sure the fuel line connection is secure If the connection is not secure, the ring pull could break when you try to remove it Connection to new fuel line
6. Reconnect the negative cable to the battery, and turn the ignition switch to ON (II) or press the engine start/stop button to select the ON mode (but do not operate the starter motor) The fuel pump will run for about 2 seconds, and fuel pressure will rise Repeat this two or three times, then checking for fuel leaks
7. If equipped, install the quick-connect fitting cover Set the groove of the cover (A) on the fuel line (B) as shown, then install it Make sure the cover is firmly locked in place

Scheme 124

Fuel Tank Unit Removal and Installation

Special Tools Required

Fuel sender wrench 07AAA-S0XA100

Scheme 125

Scheme 126

1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) )
2. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
3. Remove the access panel (A) from the floor
4. Disconnect the fuel tank unit 4P connector (B)
5. Disconnect the quick-connect fitting (C) from the fuel tank unit
6. Using the special tool, loosen the locknut (A)
7. Remove the locknut (A) and the fuel tank unit (B)

Scheme 127

Scheme 128

Scheme 129

Scheme 130

1. Temporarily attach a new base gasket (A) to the fuel tank unit (B), then insert the fuel tank unit partially into the fuel tank NOTE: Be careful not to damage the new base gasket Be careful not to bend the fuel gauge sending unit Do not coat the base gasket with oil
2. Transfer the base gasket (A) from the fuel tank unit to the fuel tank
3. Align the marks (B) on the fuel tank and fuel tank unit, then insert the fuel tank unit into the fuel tank until the fuel tank unit rests on top of the base gasket NOTE: To avoid a fuel leak, check the base gasket, visually or by hand, to make sure it is not pinched
4. Tighten a new locknut (A) by hand with a new locknut plate (B) NOTE: Before tightening, align the mark (C) on the locknut with the start of the threads (D)
5. Using the special tool, tighten the locknut to the specified torque. NOTE: After tightening, make sure the marks are still aligned After installation, check the base gasket, visually or by hand, to make sure it is not pinched
6. Connect the fuel tank unit 4P connector, then connect the quick-connect fitting
7. Reconnect the negative cable to the battery, and turn the ignition switch to ON (II) or press the engine start/stop button to select the ON mode (but do not operate the starter motor) The fuel pump will run for about 2 seconds, and fuel pressure rises Repeat this two or three times, then check for fuel leaks
8. Install the access panel
9. Install the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
10. Install the fuel fill cap

Removal (with SH-AWD)

Special Tools Required

Fuel sender wrench 07AAA-S0XA100

Scheme 131

Scheme 132

Scheme 133

1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) )
2. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
3. Remove the access panel (A) from the left side of the floor
4. Disconnect the fuel tank unit 4P connector (B)
5. Disconnect the quick-connect fitting (C) from the fuel tank unit
6. Using the special tool, loosen the locknut (A)
7. Remove the locknut (A), and lift up the fuel tank unit(B)
8. Disconnect the transfer tube (C), and remove the fuel tank unit

Scheme 134

Scheme 135

Scheme 136

Scheme 137

1. Temporarily attach a new base gasket (A) to the fuel tank unit (B), position the mark of the transfer tube (C) up, connect the transfer tube (D), then insert the fuel tank unit partially into the fuel tank NOTE: Be careful not to damage the new base gasket Make sure the clamp (E) is positioned as shown Be careful not to bend the fuel gauge sending unit Do not coat the base gasket with oil
2. Transfer the base gasket (A) from the fuel tank unit to the fuel tank
3. Align the marks (B) on the fuel tank and the fuel tank unit, then insert it straight into the fuel tank Make sure it evenly contacts the base gasket NOTE: To prevent a fuel leak, check the base gasket, visually or by hand, to make sure it is not pinched
4. Tighten a new locknut (A) by hand with a new locknut plate (B) NOTE: Before tightening, align the mark (C) on the locknut with the start of the threads (D)
5. Using the special tool, tighten the locknut to the specified torque NOTE: After tightening, make sure the marks (A) are still aligned After installation, check the base gasket, visually or by hand, to be sure it is not pinched
6. Connect the fuel tank unit 4P connector, then connect the quick-connect fitting
7. Reconnect the negative cable to the battery, and turn the ignition switch to ON (II) or press the engine start/stop button to select the ON mode (but do not operate the starter motor) The fuel pump will run for about 2 seconds, and fuel pressure will rise Repeat two or three times, then check for fuel leaks
8. Install the access panel
9. Install the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
10. Install the fuel fill cap

Scheme 138

1. Remove the fuel tank unit (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) )
2. Remove the reservoir (A)
3. Remove the bracket (B)
4. Remove the fuel pressure regulator (C) and the backup ring (D)
5. Install the parts in the reverse order of removal with new O-rings (E) and a new bracket When installing the fuel tank unit, align the marks on the fuel tank unit and the fuel tank (see «INSTALLATION (WITHOUT SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )

Note. Coat the O-rings with clean engine oil, do not use any other type oils or fluids Do not pinch the O-rings during installation Use all the new parts supplied in the pressure regulator replacement kit

Scheme 139

1. Remove the fuel tank unit (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
2. Remove the bracket (A)
3. Remove the pressure regulator (B)
4. Install the parts in the reverse order of removal with new O-ring (C) When installing the fuel tank unit, align the marks on the fuel tank unit and the fuel tank (see «INSTALLATION (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )

Note. Coat the O-rings with clean engine oil, do not use any other oil or fluid Do not pinch the O-rings during installation Use all the new parts supplied in the pressure regulator replacement kit

The fuel filter should be replaced whenever the fuel pressure drops below the specified value (see FUEL PRESSURE TEST ), after making sure that the fuel pump and the fuel pressure regulator are OK

Scheme 140

1. Remove the fuel tank unit (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) )
2. Remove the fuel filter set (A)
3. Check these items before installing the fuel tank unit When connecting the wire harness (B), make sure the connection is secure and the connectors are firmly locked into place When installing the fuel gauge sending unit (C), make sure the connection is secure and the connector is firmly locked into place Be careful not to bend or twist it excessively
4. Install the parts in the reverse order of removal with new O-rings (D) and a new bracket (E) When installing the fuel tank unit, align the marks on the unit and the fuel tank (see «INSTALLATION (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )

Note. Coat the O-rings with clean engine oil, do not use any other oil or fluid Do not pinch the O-rings during installation Use all the new parts supplied in the fuel filter replacement kit

The fuel filter should be replaced whenever the fuel pressure drops below the specified value (see FUEL PRESSURE TEST ), after making sure that the fuel pump and fuel pressure regulator are OK

Scheme 141

1. Remove the fuel tank unit (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
2. Remove the fuel filter set (A)
3. Check these items before installing the fuel tank unit When connecting the wire harness (B), make sure the connection is secure and the connectors are firmly locked into place When installing the fuel gauge sending unit (C), make sure the connection is secure and the connector is firmly locked into place Be careful not to bend or twist it excessively
4. Install the parts in the reverse order of removal with new O-rings (D) When installing the fuel tank unit, align the marks on the unit and the fuel tank (see «INSTALLATION (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) NOTE: Coat the O-rings with clean engine oil, do not use any other oil or fluid Do not pinch the O-rings during installation Use all the new parts supplied in the fuel filter replacement kit

Scheme 142

Scheme 143

1. Remove the fuel tank unit, without SH-AWD system (see «FUEL TANK UNIT REMOVAL AND INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-unit-removal-and-installation) ), with SH-AWD system (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
2. Remove the fuel level sensor (fuel gauge sending unit) (A) from the fuel tank unit (B) Without SH-AWD With SH-AWD
3. Check these items before installing the fuel tank unit When connecting the wire harness, make sure the connection is secure and the connector (C) is firmly locked into place When installing the fuel gauge sending unit, make sure the connection is secure Be careful not to bend or twist it excessively
4. Install the parts in the reverse order of removal When installing the fuel tank unit, align the marks on the unit and the fuel tank, without SH-AWD system (see «INSTALLATION (WITHOUT SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «INSTALLATION (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )

Secondary Fuel Gauge Sending Unit Removal/Installation

Special Tools Required

Fuel sender wrench 07AAA-S0XA100

Scheme 144

Scheme 145

Scheme 146

1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-pressure-relieving) )
2. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
3. Remove the access panel (A) from the right side of the floor
4. Disconnect the secondary fuel gauge sending unit 4P connector (B)
5. Using the special tool, loosen the locknut (A)
6. Remove the locknut (A), and lift up the secondary fuel gauge sending unit (B) from the fuel tank
7. Disconnect the transfer tube (C), and remove the secondary fuel gauge sending unit

Scheme 147

Scheme 148

Scheme 149

1. Temporarily attach a new base gasket (A) to the secondary fuel gauge sending unit (B), position the mark on the transfer tube (C) up, connect the transfer tube (D), then insert the secondary fuel gauge sending unit partially into the fuel tank NOTE: Be careful not to damage the new base gasket Make sure the clamp (E) is positioned as shown Be careful not to bend the secondary fuel gauge sending unit Do not coat the base gasket with oil
2. Transfer the base gasket (A) from the secondary fuel gauge sending unit to the fuel tank
3. Align the marks (B) on the fuel tank and the secondary fuel gauge sending unit, then insert the secondary fuel gauge sending unit, straight into the fuel tank Make sure it evenly contacts the base gasket NOTE: To avoid a fuel leak, check the base gasket, visually or by hand, to make sure it is not pinched
4. Tighten a new locknut (A) by hand with a new locknut plate (B) NOTE: Before tightening, align the mark (C) on locknut with the start of the threads (D)
5. Using the tool, tighten a new locknut (A) with a new locknut plate (B) to the specified torque NOTE: After tightening, make sure the marks are still aligned After installation, check the base gasket, visually or by hand, to be sure it is not pinched
6. Connect the secondary fuel gauge sending unit 4P connector
7. Install the parts in the reverse order of removal

Scheme 150

Scheme 151

Scheme 152

1. Dram the fuel tank (see «FUEL TANK DRAINING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-draining) )
2. Reinstall the fuel tank unit without connecting the fuel tank unit 4P connector and the quick-connect fitting (see «INSTALLATION (WITHOUT SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
3. Remove the fuel fill pipe cover (see «FUEL FILL PIPE REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
4. Disconnect the quick-connect fittings (A) (see «FUEL LINE/QUICK-CONNECT FITTING REMOVAL»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), and the fuel fill tube (B) from the fuel fill pipe Slide back the clamps, then twist the hose as you pull to avoid damaging them
5. Raise the vehicle on a lift
6. Disconnect the hose (A) from the EVAP canister
7. Remove the hose (B) from the clamp (C) NOTE: Be careful not to damage the hose
8. Remove the exhaust pipe (see «EXHAUST PIPE AND MUFFLER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/mechanical/#intake-manifold-and-exhaust-system__exhaust-pipe-and-muffler-replacement) )
9. Remove the middle floor undercover (see «MIDDLE FLOOR UNDERCOVER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/exterior-body-panels/#fenderwell__middle-floor-undercover-replacement) )
10. Remove the fuel tank protector (A)
11. Remove the right parking brake cable mounting bolts (see «PARKING BRAKE CABLE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/mechanical-hydraulic/#conventional-brake-components) )
12. Place a jack or other support under the fuel tank (B)
13. Remove the strap bolts (C) and the straps (D)
14. Remove the fuel tank
15. Install the parts in the reverse order of removal

Note. New fuel tanks have ring pull (E) at the fuel vapor hose connector (F) When you connect the hose and confirm that the connection is secure, remove the ring pull by pulling it down Before connecting the fuel fill pipe and the quick-connect fitting, check for dirt, and clean it if needed, taking care not to damage the fuel fill pipe and other parts When installing the fuel tank protector, make sure to insert it into the clip (G) in the direction shown

Scheme 153

Scheme 154

1. Drain the fuel tank (see «FUEL TANK DRAINING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-draining) )
2. Reinstall the fuel tank unit without connecting the fuel tank unit 4P connector and the quick-connect fitting (see «INSTALLATION (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
3. Remove the fuel fill pipe cover (see «FUEL FILL PIPE REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
4. Disconnect the quick-connect fittings from the fuel fill pipe (see step 4 on «FUEL FILL PIPE REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
5. Raise the vehicle on a lift
6. Remove the exhaust pipe (see «EXHAUST PIPE AND MUFFLER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/mechanical/#intake-manifold-and-exhaust-system__exhaust-pipe-and-muffler-replacement) )
7. Remove the propeller shaft (see «PROPELLER SHAFT REMOVAL»(/acura/tl/iv-2008-2011/remont/axle-shafts/#drivelineaxle) )
8. Place a jack or other support under the fuel tank (A)
9. Remove the strap bolts (B) and the straps (C)
10. Slowly lower the fuel tank, and disconnect the hose (D) and the quick-connect fitting (E)
11. Remove the fuel tank
12. Remove the fuel tank protector (A) from the fuel tank
13. Install the parts in the reverse order of removal

Note. When installing the fuel tank protector, make sure to insert it into the clip (B) in the direction shown Before connecting the fuel fill pipe and the quick-connect fittings, check for dirt, and clean them if needed, taking care not to damage the fuel fill pipe and other parts

Scheme 155

Scheme 156

Scheme 157

Scheme 158

1. Dram the fuel tank (see «FUEL TANK DRAINING»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__fuel-tank-draining) )
2. Remove the left rear wheel
3. Remove the fuel fill pipe cover (A)
4. Disconnect the fuel fill tube Without SH-AWD Disconnect the quick-connect fitting (A), and disconnect the fuel fill tube (B) from the fuel fill pipe by sliding back the clamp On the fuel fill tube, then twist the hose as you pull to avoid damaging the hose or pipe With SH-AWD Disconnect the quick-connect fittings (A) (see «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) Without SH-AWD With SH-AWD
5. Remove the fuel fill pipe (A)
6. Install the parts in the reverse order of removal

Note. Before connecting the fuel fill pipe and the quick-connect fitting, check for dirt, and clean it if needed, taking care not to damage the fuel fill pipe and other parts

Scheme 159

1. Remove the rear seat cushion and the seat-back (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
2. Disconnect the fuel pump control module connector (A)
3. Remove the fuel pump control module (B)
4. Install the parts in the reverse order of removal

Note. For the fuel gauge system circuit diagram, refer to the Gauges Circuit Diagram (see CIRCUIT DIAGRAM )

Scheme 160

Scheme 161

Scheme 162

1. Check the No 12 METER (7 5 A) fuse in the driver's under-dash fuse/relay box before testing
2. Check for body electrical system DTCs If no problem is found, go to step 3 If DTC B1175 or B1176 is indicated, go to the indicated DTC's troubleshooting
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
4. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
5. Remove the access panel (A) from the floor
6. Disconnect the fuel tank unit 4P connector (B)
7. Measure the voltage between fuel tank unit 4P connector terminals No 1 and No 3 with the ignition switch turned to ON (II), or press the engine start/stop button to select the ON mode There should be battery voltage If the voltage is OK, go to step 8 If the voltage is not as specified, check for a short in the PUR wire to ground an open in the PUR or the ORN wire
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
9. Remove the fuel tank unit from the fuel tank (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
10. Measure the resistance between fuel tank unit 4P connector terminals No 1 and No 3 with the float at E (EMPTY), LOW (LOW FUEL INDICATOR), 1/2 (HALF FULL), and F (FULL) positions If you do not get the following readings, replace the fuel gauge sending unit (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) RESISTANCE REFERENCE Float Position F 6.1 in (155.2 mm) 1/2 3.8m (97.6 mm) LOW 1.6 in (40.8 mm) E 0 6 in (15 9 mm) Resistance (ohms) 19 to 21 196 7 to 206 7 503 8 to 589 4 772 to 788
11. Reconnect the fuel tank unit 4P connector
12. Remove the No 15 BACK UP (10 A) fuse from the under-hood fuse/relay box for at least 10 seconds, then reinstall it
13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
14. Check that the pointer of the fuel gauge indicates F with the float at F If the pointer of the fuel gauge does not indicate F, replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) ) If the gauge is OK, the test is complete NOTE: The pointer of the fuel gauge returns to the bottom of the gauge dial when the ignition switch is in ACC (I) and LOCK (0) or when the vehicle is in ACC or OFF mode, regardless of the fuel level Remove the No 15 BACK UP (10 A) fuse from the under-hood fuse/relay box for at least 10 seconds after completing troubleshooting, otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level

Note. For the fuel gauge system circuit diagram, refer to the Gauges Circuit Diagram (see CIRCUIT DIAGRAM )

Scheme 163

1. Check the No 12 METER (7 5 A) fuse in the under-dash fuse/relay box before testing
2. Check for body electrical system DTCs If no problem is found, go to step 3 If DTC B1175 or B1176 is indicated, go to the indicated DTC's troubleshooting
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
4. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
5. Remove the access> panel (A) from the left side of the floor
6. Disconnect the fuel tank unit 4P connector (B)
7. Remove the fuel tank unit from the fuel tank (see «REMOVAL (WITH SH-AWD)»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__removal-with-sh-awd) )
8. Measure the resistance between the No 1 and No 3 terminals of the fuel tank unit 4P connector with the float at E (EMPTY), LOW (LOW FUEL INDICATOR), and F (FULL) positions

1. If you do not get the following readings, replace the fuel gauge sending unit (see «FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )
2. If the fuel gauge sending unit test is OK, do the secondary fuel gauge sending unit test (see «SECONDARY FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) )

RESISTANCE REFERENCE

Note. Remove the No 15 BACK UP (10 A) fuse from the under-hood fuse/relay box for at least 30 seconds after completing troubleshooting, otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level

Scheme 164

Scheme 165

1. Remove the rear seat cushion (see «REAR SEAT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/seats/#seats__rear-seat-removalinstallation) )
2. Remove the access panel (A) from the right side of the floor
3. Disconnect the secondary fuel gauge sending unit 4P connector (B)
4. Remove the secondary fuel gauge sending unit from the fuel tank (see «SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system__secondary-fuel-gauge-sending-unit-removalinstallation) )
5. Measure the resistance between the No 1 and No 3 terminals of the secondary fuel gauge sending unit 4P connector with the float at E (EMPTY), 1/2 (HALF FULL), and F (FULL) positions

RESISTANCE REFERENCE

Note. Remove the No 15 BACK UP (10 A) fuse from the under-hood fuse/relay box for at least 10 seconds after completing troubleshooting, otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level

Scheme 166

Low Fuel Indicator Test

1. Do the gauge self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__self-diagnostic-function) ) If the low fuel indicator flashes, go to step 2 If the low fuel indicator does not flash, replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#display-and-gauge-system__gauge-control-module-replacement) )
2. Check for body electrical system DTCs If any DTCs are indicated, do the indicated DTC's troubleshooting. If no DTCs are indicated, go to step 3
3. Do the fuel gauge sending unit test, without SH-AWD system (see «FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ), with SH-AWD system (see «WITH SH-AWD»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ) (With SH-AWD system and secondary fuel gauge sending unit test (see «SECONDARY FUEL GAUGE SENDING UNIT TEST»(/acura/tl/iv-2008-2011/remont/fuel-system/#fuel-supply-system) ))

See also:
• GENERAL TROUBLESHOOTING INFORMATION
• PCM IDLE LEARN PROCEDURE
• REAR SEAT REMOVAL/INSTALLATION
• GAUGE CONTROL MODULE REPLACEMENT
• ECM/PCM UPDATE
• SUBSTITUTING THE ECM/PCM
• ECM/PCM REPLACEMENT
• DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION
• POWER RELAY TEST
• DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION
• REMOVAL AND INSTALLATION
• LEFT SIDE WIRE HARNESS (WITHOUT SH-AWD)
• LEFT SIDE WIRE HARNESS (WITH SH-AWD)
• DLC CIRCUIT TROUBLESHOOTING
• MIL CIRCUIT TROUBLESHOOTING
• BATTERY TERMINAL DISCONNECTION AND RECONNECTION
• EXHAUST PIPE AND MUFFLER REPLACEMENT
• MIDDLE FLOOR UNDERCOVER REPLACEMENT
• PARKING BRAKE CABLE REPLACEMENT
• PROPELLER SHAFT REMOVAL
• CIRCUIT DIAGRAM
• SELF-DIAGNOSTIC FUNCTION
• FUEL GAUGE SENDING UNIT TEST
• SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION
• FUEL TANK UNIT REMOVAL AND INSTALLATION
• REMOVAL (WITH SH-AWD)
• FUEL PRESSURE RELIEVING
• FUEL PUMP CIRCUIT TROUBLESHOOTING
• FUEL PRESSURE TEST
• FUEL TANK DRAINING