Charging System Indicator Circuit Troubleshooting
  1. Connect alternator 4P connector terminal No. 3 to body ground with a jumper wire.
  1. Turn the ignition switch to ON (II).
Does the charging system indicator come on?
YES -
Replace the alternator, or repair the alternator. ■
NO -
Go to Step 19 .
  1. Connect the HDS to the DLC.
  1. Turn the ignition switch to ON (II).
  1. Make sure the HDS communicates with the vehicle and the ECM/PCM. If it doesn't communicate, troubleshoot the DLC circuit.
  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 (49P).