Acura RL. Manual - part 690

NO - Repair open in the wire between the alternator (IG1 line) and the No. 18 ACG (15A) fuse in the
driver's under-dash fuse/relay box, then go to step 18.

12. Measure voltage between alternator 4P connector terminal No. 4 and body ground.

Fig. 85: Measuring Voltage Between Alternator 4P Connector Terminal No. 4 And Body
Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES - Replace the alternator (see ALTERNATOR REMOVAL AND INSTALLATION ), then go
to step 18.

NO - Go to step 13.

13. Turn the ignition switch OFF.

14. Jump the SCS line with the HDS.

15. Disconnect PCM connector A (31P).

16. Connect alternator 4P connector terminal No. 4 to body ground with a jumper wire.

Fig. 86: Connecting Alternator 4P Connector Terminal No. 4 To Body Ground With Jumper
Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.

17. Check for continuity between PCM connector terminal A12 and body ground.

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

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

Fig. 87: Checking Continuity Between PCM Connector Terminal A12 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 26.

NO - Repair open in the wire between the PCM (A12) and the alternator, then go to step 18.

18. Reconnect all connectors.

19. Turn the ignition switch ON (II).

20. Reset the PCM with the HDS.

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

22. Start the engine.

23. Check under these conditions:



A/Con



Temperature control on maximum cool



Blower fan at maximum speed



Rear window defogger on



Headlights on high beam

24. Hold the engine speed at 2,000 RPM (in Park or neutral) for 1 minute.

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

Is DTC P16BC indicated?

YES - Check for poor connections or loose terminals at the alternator 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

26. Reconnect all connectors.

27. 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 ).

28. Start the engine.

29. Check under these conditions:



A/C on

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

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



Temperature control at maximum cool



Blower fan at maximum speed



Headlights on high beam

30. Hold the engine speed at 2,000 RPM (in Park or neutral) 1 minute.

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

Is DTC P16BC indicated?

YES - Check for poor connections or loose terminals at the alternator and the PCM. If the PCM was
updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then go to step 28. 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 P16BD: STARTER RELAY 2 MALFUNCTION

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS and wait 5 seconds.

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

Is DTC P16BD indicated?

YES - Go to step 4.

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

4. Replace starter relay 2.

5. Reset the PCM with the HDS.

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

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

Is DTC P16BD indicated?

YES - Check for poor connections or loose terminals at starter relay 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 P16BE: STARTER RELAY 1 MALFUNCTION

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

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS and wait 5 seconds.

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

Is DTC P16BE indicated?

YES - Go to step 4.

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

4. Replace starter relay 1.

5. Reset the PCM with the HDS.

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

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

Is DTC P16BE indicated?

YES - Check for poor connections or loose terminals at starter relay 1 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 P16BF: STARTER RELAY STRLY CIRCUIT MALFUNCTION

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS and wait 5 seconds.

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

Is DTC P16BF indicated?

YES - Go to step 4.

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

4. Turn the ignition switch OFF.

5. Jump the SCS line with the HDS.

6. Remove starter relay 1 and starter relay 2.

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 ).

2007 Acura RL

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

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

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