Acura RL. Manual - part 454

Is there continuity?

YES - Go to step 13.

NO - Repair open in the wire between APP sensor B and the PCM (D9), then go to step 20.

13. Reconnect PCM connector D (17P).

14. Connect APP sensor 6P connector terminals No. 4 and No. 6 with a jumper wire.

Fig. 49: Connecting APP Sensor 6P Connector Terminals No. 4 And No. 6 With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.

15. Turn the ignition switch ON (II).

16. Check APP SENSOR B in the DATA LIST with the HDS.

Is there about 0.1 V or less?

YES - Go to step 25.

NO - Go to step 18.

17. Measure voltage between PCM connector terminals E1 and E12.

Fig. 50: Measuring Voltage Between PCM Connector Terminals E1 And E12
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES - Repair open in the wire between the PCM (E12) and APP sensor B, then go to step 20.

2007 Acura RL

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

Friday, June 05, 2009 2:29:49 PM

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NO - Go to step 25.

18. Turn the ignition switch OFF.

19. Replace the accelerator pedal module (see ACCELERATOR PEDAL MODULE

REMOVAL/INSTALLATION ).

20. Reconnect all connectors.

21. Turn the ignition switch ON (II).

22. Reset the PCM with the HDS.

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

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

Is DTC P2127 indicated?

YES - Check for poor connections or loose terminals at APP sensor B 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.

25. Reconnect all connectors.

26. 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 ).

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

Is DTC P2127 indicated?

YES - Check for poor connections or loose terminals at APP sensor B and the PCM. 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 P2128: APP SENSOR B (THROTTLE POSITION SENSOR E) CIRCUIT HIGH VOLTAGE

1. Turn the ignition switch ON (II).

2. Check APP SENSOR B in the DATA LIST with the HDS.

Is there about 4.9 V or more?

YES - Go to step 3.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals
at APP sensor Band 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 ).

2007 Acura RL

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

Friday, June 05, 2009 2:29:49 PM

Page 38

3. Turn the ignition switch OFF.

4. Disconnect the APP sensor 6P connector.

5. Turn the ignition switch ON (II).

6. Measure voltage between APP sensor 6P connector terminals No. 5 and No. 6.

Fig. 51: Measuring Voltage Between APP Sensor 6P Connector Terminals No. 5 And No. 6
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES - Go to step 8.

NO - Go to step 7.

7. Measure voltage between PCM connector terminals E1 and E12.

Fig. 52: Measuring Voltage Between PCM Connector Terminals E1 And E12
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES - Repair open in the wire between the PCM (E1) and APP sensor B, then go to step 10.

NO - Go to step 14.

8. Turn the ignition switch ON (II).

9. Replace the accelerator pedal module (see ACCELERATOR PEDAL MODULE

REMOVAL/INSTALLATION ).

2007 Acura RL

2005-08 ENGINE PERFORMANCE Electronic Throttle Control System - RL

Friday, June 05, 2009 2:29:49 PM

Page 39

10. Turn the ignition switch ON (II).

11. Reset the PCM with the HDS.

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

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

Is DTC P2128 indicated?

YES - Check for poor connections or loose terminals at APP sensor B 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.

14. Turn the ignition switch OFF.

15. Reconnect all connectors.

16. 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 ).

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

Is DTC P2128 indicated?

DTC P2135: TP SENSOR A/B VOLTAGE INCORRECT CORRELATION

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Do the ETCS TEST in the INSPECTION MENU with the HDS.

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

Is DTC P2135 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 throttle body and the throttle actuator control module.

5. Turn the ignition switch OFF.

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 Electronic Throttle Control System - RL

Friday, June 05, 2009 2:29:49 PM

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