( TL19E20A14100016802FAAT00 )

Charging System Indicator Circuit Troubleshooting

1. Check for continuity between ECM/PCM connector terminal B42 and alternator 4P connector terminal No. 3.

Is there continuity?

YES | - | Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. ■
NO | - | Repair open in the wire between the alternator and the ECM/PCM.■