Symptom Chart

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
System voltage high	Engine, generator and battery grounds Wiring, terminals or connectors Battery Generator	GO to PINPOINT TEST A .
System voltage low or battery is discharged	Abnormal ignition-off current drain(s) Engine, generator and battery grounds Positive battery cable Wiring, terminals or connectors Battery Generator	GO to PINPOINT TEST B .
The generator is noisy	Front End Accessory Drive (FEAD) belt Loose bolts/brackets Generator/pulleys	GO to PINPOINT TEST F .
Radio interference	Generator Wiring, terminals or connectors In-vehicle entertainment system	GO to PINPOINT TEST G .
Charging system warning indicator is never/always on	Wiring, terminals or connectors Instrument Cluster (IC) Generator PCM	RETRIEVE Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules. If any charging system DTCs are found, REFER to the DIAGNOSTIC TROUBLE CODE (DTC) CHART . If no charging system DTCs are found, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .