Circuit Description
IMPORTANT:
Always check the generator for output before assuming that a grounded L terminal circuit has damaged the regulator. Refer to Generator Replacement (1.6L) or Generator Replacement (1.8L/2.0L) .
When operating normally, the generator indicator lamp will come ON when the ignition switch is in the ON position and go out when the engine starts. If the lamp operates abnormally or if an undercharged or overcharged battery condition occurs, the following procedure may be used to diagnose the charging system. Remember that an undercharged battery is often caused by accessories being left ON overnight or by a defective switch that allows a lamp, such as a trunk or glove box lamp, to stay ON.