Symptom Chart: Charging System

Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to DIAGNOSTIC METHODS for information regarding Ford-specific diagnostic practices.

SYMPTOM CHART

Condition	Possible Sources	Actions
System voltage high	Fuse Wiring, terminals or connectors Engine, generator and battery ground Battery Generator PCM	REFER to Diagnostic Routine A: System Voltage High .
System voltage low or battery is discharged	Fuse Fusible link Wiring, terminals or connectors Abnormal ignition-off current drain(s) Battery Generator PCM High current BJB Radial arm adapter (if equipped)	REFER to Diagnostic Routine B: System Voltage Low or Battery is Discharged .
The generator is noisy	FEAD belt Loose bolts/brackets Generator/pulleys	REFER to Diagnostic Routine F: The Generator is Noisy .
Radio interference	Generator Wiring, terminals or connectors In-vehicle entertainment system	REFER to Diagnostic Routine G: Radio Interference .
Charging system warning indicator is never/always on	Wiring, terminals or connectors IPC Generator PCM	RETRIEVE CMDTCs from all modules. If any charging system DTCs are found, REFER to Related Module DTC Chart(s) . If no charging system DTCs are found, REFER to DIAGNOSTIC ROUTINE W : The Charging System Message Center Warning Indicator Is Never or Always On.