Acura RL. Manual - part 688

1. Turn the ignition switch ON (II).  

2. Check the ELD in the DATA LIST with the HDS: 

Is 72 A or more indicated?  

YES - Go to step 3. 

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

3. Turn the ignition switch OFF.  

4. Disconnect the ELD 3P connector.  

5. Turn the ignition switch ON (II).  

6. Check the ELD in the DATA LIST with the HDS. 

Is 72 A or more indicated?  

YES - Go to step 7. 

NO - Go to step 11. 

7. Turn the ignition switch OFF.  

8. Jump the SCS line with the HDS.  

9. Disconnect PCM connector E (31P).  

10. Check for continuity between PCM connector terminal E18 and body ground. 

Fig. 79: Checking Continuity Between PCM Connector Terminal E18 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the PCM (E18) and the ELD, then go to step 13. 

NO - Go to step 20. 

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

  

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Friday, June 05, 2009 2:34:59 PM

Page 94 

© 2005 Mitchell Repair Information Company, LLC. 

11. Turn the ignition switch OFF.  

12. Replace the under-hood fuse/relay box (see REMOVAL AND INSTALLATION ).  

13. Reconnect all connectors.  

14. Turn the ignition switch ON (II).  

15. Reset the PCM with the HDS.  

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

17. Start the engine.  

18. Turn on the headlights.  

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

Is DTC P1297 indicated?  

YES - Check for poor connections or loose terminals at the ELD unit 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 

20. Reconnect all connectors.  

21. 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 ).  

22. Start the engine.  

23. Turn on the headlights.  

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

Is DTC P1297 indicated?  

YES - Check for poor connections or loose terminals at the ELD unit and the PCM. If the PCM was 
updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then go to step 22. 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 P1298: ELD CIRCUIT HIGH VOLTAGE 

1. Start the engine, and let it idle.  

2. Check the ELD in the DATA LIST with the HDS. 

Is 0.2 A or less indicated?  

YES - Go to step 3. 

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

  

me 

 

Friday, June 05, 2009 2:34:59 PM

Page 95 

© 2005 Mitchell Repair Information Company, LLC. 

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

3. Turn the ignition switch OFF.  

4. Disconnect the ELD 3P connector.  

5. Turn the ignition switch ON (II).  

6. Measure voltage between ELD 3P connector terminal No. 1 and body ground. 

Fig. 80: Measuring Voltage Between ELD 3P Connector Terminal No. 1 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there battery voltage?  

YES - Go to step 7. 

NO - Repair open in the wire between the No. 18 ACG (15A) fuse and the ELD, then go to step 14. 

7. Turn the ignition switch OFF.  

8. Connect ELD 3P connector terminal No. 3 to body ground with a jumper wire. 

Fig. 81: Connecting ELD 3P Connector Terminal No. 3 To Body Ground With Jumper Wire 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

9. Jump the SCS line with the HDS.  

10. Disconnect PCM connector E (31P).  

11. Check for continuity between PCM connector terminal E18 and body ground. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:34:59 PM

Page 96 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 82: Checking Continuity Between PCM Connector Terminal E18 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 12. 

NO - Repair open in the wire between the PCM (E18) and the ELD, then go to step 14. 

12. Check for continuity between ELD 3P connector terminal No. 2 and body ground. 

Fig. 83: Checking Continuity Between ELD 3P Connector Terminal No. 2 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 13. 

NO - Repair open in the wire between the ELD and G301, then go to step 14. 

13. Replace the under-hood fuse/relay box (see REMOVAL AND INSTALLATION ).  

14. Reconnect all connectors.  

15. Turn the ignition switch ON (II).  

16. Reset the PCM with the HDS.  

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

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

Is DTC P1298 indicated?  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:34:59 PM

Page 97 

© 2005 Mitchell Repair Information Company, LLC.