| 1. | Turn the ignition switch ON (II). Does the charging system indicator come on? YES - Go to 2. NO - Go to 3. |
| 2. | Start the engine. Does the charging system indicator go off? YES - Charging system indicator circuit is OK. Go to the Alternator and Regulator Circuit Test.n NO - Go to 3. |
| 3. | Troubleshoot the multiplex integrated control system. Is the multiplex integrated control system OK? YES - Go to 4. NO - Check the multiplex integrated control system as indicated by the DTC.n |
| 4. | Perform the gauge control module self test procedure. Does the charge indicator flash? YES - Go to 5. NO - Replace the gauge control module.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Disconnect the alternator 4P connector. |
| 7. | Turn the ignition switch ON (II). |
| 8. | Measure the voltage between alternator 4P connector terminal No. 1 and body ground. Is there battery voltage? YES - Go to 9. NO - Check for a blown No. 18 (15A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the alternator and under-dash fuse/relay box.n |
| 9. | With the ignition switch ON (II), connect the Honda PGM Tester or the Honda Diagnostic System (HDS) to the data link connecter (DLC), and go into any of the live data screens. NOTE: Steps 9 through 11 must be done to protect the engine control module (ECM)/power train control (PCM) from damage. |
| 10. | Turn the ignition switch OFF. |
| 11. | Turn the tester off and then back on. Go to the SCS mode and follow the screens to ground the 16-pin DLS. |
| 12. | Disconnect ECM/PCM connector B (24P). |
| 13. | Check for continuity between ECM/PCM connector terminal B10 and alternator 4P connector terminal No. 3. Is there continuity? YES - Go to 14. NO - Repair an open in the wire between the alternator and the ECM/PCM.n |
| 14. | Check for continuity between ECM/PCM connector terminal B10 and body ground. Is there continuity? YES - Repair a short in the wire between the alternator and the ECM/PCM.n NO - Go to the Alternator and Regulator Circuit Test.n |
| 1. | Be sure the battery is sufficiently charged. |
| 2. | Hook up the following equipment:
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| 3. | Start the engine. Hold the engine at 3,000 rpm (min-1) with no load shift lever in Park or Neutral, until the radiator fan comes on then let it idle. |
| 4. | Raise the engine speed to 2,000 rpm (min-1) and hold it there. |
| 5. | Turn the headlights (high beam) on, and measure voltage at the alternator terminal. Is the voltage between 13.9 and 15.1 V? YES - Go to 6. |
| 6. | Read the voltage at 13.5 V. NOTE: Adjust the voltage by turn the blower motor, rear window defogger, brake lights and etc. on. Is the amperage 60A or more? YES - Alternator/regulator operation is OK. If the charge system indicator is still on, replace the alternator.n NO - Replace or repair the alternator.n |
| 1. | Check for proper operation of the electrical load detector (ELD) by checking the malfunction indicator lamp (MIL). If a DTC is present, diagnose and repair the cause before continuing with this test. |
| 2. | Disconnect the alternator 4P connector from the alternator. |
| 3. | Start the engine, and turn the headlights (high beam) ON. |
| 4. | Measure voltage between alternator 4P connector terminal No. 2 and the positive terminal of the battery. Is there 1 V or less? YES - Go to 11. NO - Go to 5. |
| 5. | Turn the headlight switch OFF. |
| 6. | With the ignition switch ON (II), connect the Honda PGM Tester or the Honda Diagnostic System (HDS) to the data link connector (DLC), and go into any of the live data screens. NOTE: Steps 6 through 8 must be done to protect the ECM/PCM from damage. |
| 7. | Turn the ignition switch OFF. |
| 8. | Turn the tester off and then back on. Go to the SCS mode and follow the screens to ground the 16-pin DLC. |
| 9. | Disconnect engine control module ECM/PCM connector B (24P). |
| 10. | Check for continuity between ECM/PCM connector terminal B18 and body ground. Is there continuity? YES - Repair a short in the wire between the alternator and ECM/PCM.n NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If prescribed voltage is now available, and the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM.n |
| 11. | Turn the headlight switch OFF. |
| 12. | With the ignition switch ON (II), connect the Honda PGM Tester or the HDS to the DLC, and go into any of live screens. NOTE: Steps 12 through 14 must be done to protect the ECM/PCM from damage. |
| 13. | Turn the ignition switch OFF. |
| 14. | Turn the tester off and then back on. Go to the SCS mode and follow the screens to ground the 16-pin DLC. |
| 15. | Disconnect ECM/PCM connector B (24P). |
| 16. | Check for continuity between ECM/PCM connector terminal B18 and alternator 4P connector terminal No. 2. Is there continuity? YES - Replace or repair the alternator.n NO - Repair an open in the wire between the alternator and ECM/PCM.n |