Acura RL. Manual - part 686

Is DTC P0630 indicated?

YES - If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ),
then recheck. If the PCM was substituted, go to step 1.

NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the
original PCM (see PCM REPLACEMENT ). If any other Temporary DTCs or DTCs are indicated,
go to the indicated DTCs troubleshooting

DTC P0685: PCM INTERNAL CIRCUIT MALFUNCTION (POWER CONTROL CIRCUIT)

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0685 indicated?

YES - Go to step 4.

NO - Intermittent failure, the system is OK at this time. If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTCs troubleshooting

4. Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a

known-good PCM (see SUBSTITUTING THE PCM ).

5. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0685 indicated?

YES - If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ),
then recheck. If the PCM was substituted, go to step 1.

DTC P0700: A/T CONTROL SYSTEM MALFUNCTION

NOTE:



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



If the problem does not return after clearing the DTC, or if this DTC is
stored intermittently, check for loose terminals at the IGP line
connectors before you replace the PCM.

NOTE:



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



This DTC is stored when there is a problem in the A/T control system.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:34:59 PM

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DTC P1109: BARO SENSOR CIRCUIT OUT OF RANGE HIGH

1. Reset the PCM with the HDS.

2. Start the engine.

3. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1109 indicated?

YES - Go to step 4.

NO - Intermittent failure, the system is OK at this time. If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTCs troubleshooting

4. Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a

known-good PCM (see SUBSTITUTING THE PCM ).

5. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1109 indicated?

YES - If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ),
then recheck. If the PCM was substituted, go to step 1.

DTC P1116: ECT SENSOR 1 CIRCUIT RANGE/PERFORMANCE PROBLEM

1. Check for poor connections or loose terminals at ECT sensor 1 and ECT sensor 2.

Are the connections and terminals OK?

YES - Go to step 2.

NO - Repair the connectors or terminals, then go to step 27.

Check for A/T DTCs with the HDS, and go to the indicated DTCs
troubleshooting.

NOTE:

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

NOTE:



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



If DTC P0111 is stored at the same time as DTC P1116, troubleshoot
DTC P0111 first, then recheck for DTC P1116.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:34:59 PM

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2. Turn the ignition switch ON (II).

3. Check for Temporary DTCs or DTCs with the HDS.

Are DTC P1116 and P2183 indicated at the same time?

YES - Go to step 15.

NO - Go to step 4.

4. Start the engine, and let it idle 10 minutes.

5. Check ECT SENSOR 1 in the DATA LIST with the HDS.

Is about 129°F (54°C) or less, or 1.54 V or more indicated?

YES - Replace ECT sensor 1 (see ECT SENSOR 1 REPLACEMENT ), then go to step 27.

NO - Go to step 6.

6. Turn the ignition switch OFF.

7. Drain the coolant (see COOLANT CHECK ).

8. Remove ECT sensor 1 (see ECT SENSOR 1 REPLACEMENT ).

9. Allow ECT sensor 1 to cool to 77°F (25°C).

10. Note the ambient temperature.

11. Connect ECT sensor 1 to its 2P connector, but do not install it into the engine.

12. Turn the ignition switch ON (II).

13. Note the value of ECT SENSOR 1 quickly in the DATA LIST with the HDS.

14. Compare the value of ECT SENSOR 1 and the outside temperature.

Does the value of ECT SENSOR 1 differ 5.4°F (3°C) or more?

YES - Replace ECT sensor 1 (see ECT SENSOR 1 REPLACEMENT ), then go to step 27.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals
at ECT sensor 1, ECT sensor 2, and the PCM

15. Start the engine, and let it idle for 10 minutes.

16. Check ECT SENSOR 1 in the DATA LIST with the HDS.

Is about 118°F (48°C) or less, or 1.75 V or more indicated?

YES - Replace ECT sensor 1 (see ECT SENSOR 1 REPLACEMENT ), then go to step 27.

NO - Go to step 17.

17. Let the engine idle 10 minutes.

18. Check ECT SENSOR 2 in the DATA LIST with the HDS.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:34:59 PM

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Is about 131°F (55°C) or less, or 1.50 V or more indicated?

YES - Replace ECT sensor 2 (see ECT SENSOR 2 REPLACEMENT ), then go to step 27.

NO - Go to step 19.

19. Turn the ignition switch OFF.

20. Drain the coolant (see COOLANT CHECK ).

21. Remove ECT sensor 1 (see ECT SENSOR 1 REPLACEMENT ), and ECT sensor 2 (see ECT

SENSOR 2 REPLACEMENT ).

22. Allow the sensors to cool to 77°F (25°C).

23. Note the ambient temperature.

24. Connect ECT sensor 1 to its 2P connector and ECT sensor 2 to its 2P connector, but do not install

them onto the engine.

25. Note the value of ECT SENSOR 1 and ECT SENSOR 2 quickly in the DATA LIST with the HDS.

26. Compare the value of ECT SENSOR 1 and the ambient temperature, and the value of ECT SENSOR

2 and the ambient temperature individually.

Does either sensor differ more than 5.4°F (3°C) from the ambient temperature?

YES - Replace the sensor that differed more than 5.4°F (3°C) from the ambient temperature, then go
to step 27.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals
at ECT sensor 1, ECT sensor 2, and the PCM

27. Turn the ignition switch ON (II).

28. Reset the PCM with the HDS.

29. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).

30. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0116 indicated?

YES - Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM,
then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the
indicated DTCs troubleshooting

DTC P1128: MAP SENSOR SIGNAL LOWER THAN EXPECTED

1. Turn the ignition switch ON (II).

2. Check the MAP SENSOR in the DATA LIST with the HDS.

NOTE:

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

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

Friday, June 05, 2009 2:34:59 PM

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