Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
The battery is discharged or battery voltage is low	High key-off current drain(s) Engine, generator and battery grounds Positive battery cable Generator B+ circuit high resistance Battery Generator	GO to PINPOINT TEST A .
The charging system warning indicator is on with the engine running (the charging system voltage does not increase)	Circuitry Voltage regulator Generator	GO to PINPOINT TEST B .
The charging system overcharges (battery voltage is greater than 15.5 volts)	Circuitry Voltage regulator Generator	GO to PINPOINT TEST C .
The charging system warning indicator is on with the engine running and the battery increases voltage	Circuitry Instrument Cluster (IC) Voltage regulator Generator	GO to PINPOINT TEST D .
The charging system warning indicator is off with the ignition switch in the RUN position and the engine off	Bulb Circuitry IC Voltage regulator Generator	GO to PINPOINT TEST E .
The charging system warning indicator flickers or is intermittent	Corroded terminal(s) Fuse(s) Circuitry Voltage regulator Generator Chaffed wiring (near water pump)	GO to PINPOINT TEST F .
The generator is noisy	Accessory drive belt Loose bolts/brackets Generator/pulley	GO to PINPOINT TEST G .
Radio interference	Generator In-vehicle entertainment system	GO to PINPOINT TEST H .