Possible Sources
PINPOINT TEST B : P0563:17, P1794:17
B1 CHECK FOR HIGH VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES
Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Is DTC B1317, B1318, B1676, U3003:16 or U3003:17 present in one or more modules AND are any charging system Diagnostic Trouble Codes (DTCs) present in the PCM?
Yes | DIAGNOSE the vehicle charging concern. REFER to: Charging System - 5.2L 32V Ti-VCT (414-00 Charging System - General Information, Diagnosis and Testing). |
|---|---|
No | GO to B2 |
B2 CHECK THE BATTERY VOLTAGE
Turn off all interior lights, exterior lights and accessories.
NOTE: Do not allow the engine speed to increase above 2,000 RPM while performing this step or the generator may self-excite and result in default charging system output voltage. If engine speed goes above 2,000 RPM, turn the engine off and restart the engine before performing this step.
Start and run the engine at approximately 1,500 RPM for 3 minutes while monitoring the battery voltage.
Is the battery voltage between 13 and 15.2 volts?
Yes | GO to B3 |
|---|---|
No | DIAGNOSE the overcharging condition. REFER to: Charging System - 5.2L 32V Ti-VCT (414-00 Charging System - General Information, Diagnosis and Testing). |
B3 RECHECK THE VDM (VEHICLE DYNAMICS CONTROL MODULE) FOR DTC (DIAGNOSTIC TROUBLE CODE) U3003:17
Ignition OFF. Ignition ON. Using a diagnostic scan tool, clear the VDM Diagnostic Trouble Codes (DTCs). Ignition OFF. Ignition ON. Using a diagnostic scan tool, carry out the VDM self-test.
Is DTC P0563:17 or P1794:17 still present?
Yes | GO to B4 |
|---|---|
No | The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle. |
B4 VERIFY ALL WIRING CONNECTIONS
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.