2014 Mustang Workshop Manual

SECTION 414-00: Charging System	2014 Mustang Workshop Manual
DIAGNOSIS AND TESTING	Procedure revision date: 01/07/2013

Symptom Chart
Condition	Possible Sources	Action
System voltage high	Fusible link Engine, generator and battery grounds Wiring, terminals or connectors Battery Generator PCM	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 IC orInstrument Panel Cluster (IPC) 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 in this section. If no charging system DTCs are found, REFER to Section 413-01 .