( TL19E20A14100012905FAAT00 )

Alternator Control Circuit Troubleshooting

1. Check for continuity between ECM/PCM connector terminal B41 and body ground.

Is there continuity?

YES | - | Repair short in the wire between the alternator and the ECM/PCM.■
NO | - | 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. ■

1. Jump the SCS line with the HDS, then turn the ignition switch to LOCK (0).
   NOTE: This step must be done to protect the ECM/PCM from damage.

1. Disconnect ECM/PCM connector B (44P).