1. Turn the ignition switch ON (II).

Does the charging system indicator come on?

YES | - | Go to Step 2 .
NO | - | Go to Step 3 .

1. Start the engine.

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 .

1. Do the gauge control module self-diagnosis function procedure.

Does the charging system indicator flash?

YES | - | Go to Step 4 .
NO | - | Replace the gauge control module. ■

1. Turn the ignition switch OFF.

1. Disconnect the alternator 4P connector.

1. Turn the ignition switch ON (II).

1. Measure the voltage between alternator 4P connector terminal No. 1 and body ground.

Is there battery voltage?

YES | - | Go to Step 8 .
NO | - | Check for a blown No. 18 (15 A) 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.■

1. Turn the ignition switch OFF, and wait at least 30 seconds.

1. Disconnect engine control module (ECM) connector No. 1 (96P).