Acura RL. Manual - part 682

Fig. 65: Checking Continuity Between PCM Connector Terminal B17 (B1) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair short in the wire between the PCM (B17 (B1)*) and CKP sensor A/B, then go to step
18.

NO - Go to step 26.

16. Turn the ignition switch OFF.

17. Replace CKP sensor A/B (see CKP SENSOR REPLACEMENT ).

18. Reconnect all connectors.

19. Turn the ignition switch ON (II).

20. Reset the PCM with the HDS.

21. Clear the CKP pattern with the HDS.

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

23. Do the CKP pattern learn procedure (see CRANK (CKP) PATTERN CLEAR/CRANK (CKP)

PATTERN LEARN ).

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

Is DTC P0335 and/or P0385* indicated?

YES - Check for poor connections or loose terminals at CKP sensor A/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 P0335 and/or P0385* indicated?

YES - Check for poor connections or loose terminals at CKP sensor A/B and the PCM. If the PCM

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

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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 P0339: CKP SENSOR A CIRCUIT INTERMITTENT INTERRUPTION; DTC P0389: CKP
SENSOR B CIRCUIT INTERMITTENT INTERRUPTION

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:



ENGINE SPEED



VSS

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

Is DTC P0339 and/or P0389* indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals
at CKP sensor A/B and the PCM

5. Check for poor or loose connections at these connectors and terminals:



CKP sensor A/B



PCM



Engine ground



Body ground

Are the connections OK?

YES - Go to step 6.

NO - Repair the connectors or terminals, then go to step 9.

6. Check for damage to the CKP sensor A/B pulse plate on the timing belt drive pulley (see TIMING

BELT DRIVE PULLEY REPLACEMENT ).

Is there damage?

YES - Replace CKP sensor A/B pulse plate/timing belt drive pulley (see TIMING BELT DRIVE

NOTE:



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



Information marked with an asterisk (*) applies to CKP sensor B.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

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Page 71

PULLEY REPLACEMENT ), then go to step 9.

NO - Go to step 7.

7. Turn the ignition switch OFF.

8. Replace the CKP sensor (see CKP SENSOR REPLACEMENT ).

9. Turn the ignition switch ON (II).

10. Reset the PCM with the HDS.

11. Clear the CKP pattern with the HDS.

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

13. Do the CKP pattern learn procedure (see CRANK (CKP) PATTERN CLEAR/CRANK (CKP)

PATTERN LEARN ).

14. Start the engine, and let it idle 10 seconds.

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

Is DTC P0339 and/or P0389* indicated?

YES - Check for poor connections or loose terminals at CKP sensor A/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

DTC P0340: CMP SENSOR NO SIGNAL

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine.

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

Is DTC P0340 indicated?

YES - Go to step 5.

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

5. Turn the ignition switch OFF.

6. Disconnect the CMP sensor 3P connector.

7. Turn the ignition switch ON (II).

8. Measure voltage between CMP sensor 3P connector terminal No. 3 and body ground.

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

Page 72

Fig. 66: Measuring Voltage Between CMP Sensor 3P Connector Terminal No. 3 And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Go to step 9.

NO - Repair open in the wire between the CMP sensor and PGM-FI main relay 1 (Fl MAIN), then go
to step 18.

9. Measure voltage between CMP sensor 3P connector terminal No. 1 and body ground.

Fig. 67: Measuring Voltage Between CMP Sensor 3P Connector Terminal No. 1 And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES - Go to step 10.

NO - Go to step 11.

10. Measure voltage between CMP sensor 3P connector terminals No. 2 and No. 3.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

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