Symptom Chart: Notes

SYMPTOM CHART

Condition	Possible Sources	Action
The battery is discharged or battery voltage is low	Circuitry. High key-off current drain(s). Battery. Generator.	Go To PINPOINT TEST A: THE BATTERY IS DISCHARGED OR BATTERY VOLTAGE IS LOW .
The charging system warning indicator is on with the engine running (the charging system voltage does not increase)	Bussed electrical center (BEC) fuse 50(10A). Circuitry. Generator. Powertrain control module (PCM).	Go To PINPOINT TEST B: THE CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING (THE CHARGING SYSTEM VOLTAGE DOES NOT INCREASE) .
The charging system overcharges (battery voltage is greater than 15.5 volts)	Circuitry. Generator. Powertrain control module (PCM).	Go To PINPOINT TEST C: THE CHARGING SYSTEM OVERCHARGES (BATTERY VOLTAGE IS GREATER THAN 15.5 VOLTS) .
The charging system warning indicator is on with the engine running and the battery increases voltage	Circuitry. Generator. Instrument cluster. Powertrain control module (PCM).	Go To PINPOINT TEST D: THE CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING AND THE BATTERY INCREASES VOLTAGE .
The charging system warning indicator is off with the ignition switch in the RUN position and the engine off	Instrument cluster. Powertrain control module (PCM).	Go To PINPOINT TEST E: THE CHARGING SYSTEM WARNING INDICATOR IS OFF WITH THE IGNITION SWITCH IN THE RUN POSITION AND THE ENGINE OFF .
The charging system warning indicator flickers or is intermittent	Instrument cluster.	INSTALL a new instrument cluster. Refer to INFORMATION, GAUGES & WARNING DEVICES for the removal and installation procedure.
The generator is noisy	Loose bolts/brackets. Drive belt. Generator/pulley.	Go To PINPOINT TEST F: THE GENERATOR IS NOISY .
Radio interference	Generator. Wiring/routing. In-vehicle entertainment system.	Go To PINPOINT TEST G: RADIO INTERFERENCE .