Ammeter Gauge: Testing and Inspection

Use tester tool No. C-3826, or equivalent, when diagnosing systems.

Proceed with the following test only if the battery and
charging system are functioning properly.

Turn ignition switch to the On position and turn on headlights, windshield wipers and stoplights. This will cause excessive demand on charging system activating the LED immediately or within approximately one minute. If the LED does not light, there is a malfunction in the system. If LED lights, run engine at approximately 2000 RPM, LED should stop emitting light. If the LED continues to emit light there is a malfunction in the system. In all cases of system malfunctions, the complete gauge must be replaced.