Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to HV19 . |
HV10 CONTINUOUS MEMORY DTCS P0480 OR P0528: INTERMITTENT CHECK
Note: Keep the coil arm of the electric cooling fan secure while checking the wiring harness. If the coil arm rotates, incorrect readings may occur.
• Ignition ON, engine OFF.
• Access the PCM and monitor the FANSS (RPM) PID.
• Access the PCM and monitor the FANDC (PER) PID.
• While observing the PID wiggle, shake, and bend small sections of the wiring harness while working from the electric cooling fan to the PCM.
• Check the electric cooling fan and the PCM connectors for damage and corrosion.
Is a concern present?
Yes | No |
|---|---|
ISOLATE the concern and REPAIR as necessary. | DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions. |
HV11 CHECK THE VOLTAGE AND GROUND CIRCUITS TO THE FSS
• Cooling Fan Clutch connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) Cooling Fan Clutch Connector, Harness Side |
|---|---|
VBPWR - Pin 5 | PWRGND - Pin 4 |
Is the voltage greater than 10.5 V?
Yes | No |
|---|---|
GO to HV15 . | GO to HV12 . |
HV12 CHECK THE VOLTAGE TO THE FSS
• Measure the voltage between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) |
|---|---|
VBPWR - Pin 5 | Ground |
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.