Symptom Chart
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to: Diagnostic Methods for information about these practices.
Symptom Chart
| Condition | Possible Sources | Actions |
|---|---|---|
| System voltage high | Direct Current/Direct Current (DC/DC) Converter Control Module Wiring, terminals or connectors |
With HEV, REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module - Hybrid Electric Vehicle (HEV) . With PHEV, REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module - Plug-In Hybrid Electric Vehicle (PHEV) . |
| System voltage low or battery is discharged | Direct Current/Direct Current (DC/DC) Converter Control Module PCM Wiring, terminals or connectors |
With HEV, REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module - Hybrid Electric Vehicle (HEV) . With PHEV, REFER to: Direct Current/Direct Current (DC/DC) Converter Control Module - Plug-In Hybrid Electric Vehicle (PHEV) . |
| Charging system warning indicator is never or always on | IPC PCM Wiring, terminals or connectors |
RETRIEVE Diagnostic Trouble Codes (DTCs) from all modules. If any charging system Diagnostic Trouble Codes (DTCs) are found, Refer to DTC Charts . If no charging system Diagnostic Trouble Codes (DTCs) are found, REFER to: Instrumentation, Message Center And Warning Chimes . |