Charging System Indicator Circuit Troubleshooting
Charging System Indicator Circuit Troubleshooting2006-2007 Models
1. Turn the ignition switch ON (II).
Does the charging system indicator come on?
YES - Go to step 2.
NO - Go to step 15.
2. Shift to neutral, and start the engine. Hold the engine speed at 2,000 rpm for 1 minute.
Does the charging system indicator go off?
YES - Charging system indicator circuit is OK. Go to the alternator and regulator circuit troubleshooting.
NO - Go to step 3.
3. Do the gauge assembly self-diagnostic function procedure.
Does the charging system indicator flash?
YES - Go to step 4.
NO - Replace the gauge assembly.
4. Turn the ignition switch OFF.
5. Disconnect the alternator 4P connector.
6. Turn the ignition switch ON (II).
Does the charging system indicator go off?
YES - Replace the alternator or repair the alternator.
NO - Go to step 7.
7. Turn the ignition switch OFF.
8. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC).
9. Turn the ignition switch ON (II).
10. Make sure the HDS communicates with the vehicle and the engine control module (ECM). If it doesn't, troubleshoot the DLC circuit.
11. Jump the SCS line with the HDS.
NOTE: This step must be done to protect the engine control module (ECM) from damage.
12. Turn the ignition switch OFF.
13. Disconnect ECM connector B (24P).
14. Check for continuity between ECM connector terminal B10 and body ground.
Is there continuity?
YES - Repair a short to ground in the wire between the alternator and the ECM (B10).
NO - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM.
15. Do the gauge assembly self-diagnostic function procedure.
Does the charging system indicator flash?
YES - Go to step 16.
NO - Replace the gauge assembly.
16. Turn the ignition switch OFF.
17. Disconnect the alternator 4P connector.
18. Connect alternator 4P connector terminal No. 3 and body ground with a jumper wire.
19. Turn the ignition switch ON (II).
Does the charging system indicator come on?
YES - Replace the alternator or repair the alternator.
NO - Go to step 20.
20. Turn the ignition switch OFF.
21. Connect the HDS to the DLC.
22. Turn the ignition switch ON (II).
23. Make sure the HDS communicates with the vehicle and the engine control module (ECM). If it doesn't, troubleshoot the DLC circuit.
24. Jump the SCS line with the HDS.
NOTE: This step must be done to protect the ECM from damage.
25. Turn the ignition switch OFF.
26. Disconnect ECM connector B (24P).
27. Check for continuity between ECM connector terminal B10 and body ground.
Is there continuity?
YES - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM.
NO - Repair an open in the wire between the alternator and the ECM (B10).