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 the voltage greater than 10.5 V?
Yes | No |
|---|---|
GO to HV7 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
HV7 CHECK THE FCV CIRCUIT FOR AN OPEN CIRCUIT
• Ignition OFF.
• PCM connector disconnected.
• Measure the resistance between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
FCV - Pin 2 | FCV - Pin B34 |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to HV8 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
HV8 CHECK THE FCV CIRCUIT FOR A SHORT TO GROUND
• Measure the resistance between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 2 | Ground |
Is the resistance greater than 10K ohms?
Yes | No |
|---|---|
GO to HV9 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
HV9 CHECK THE FCV CIRCUIT FOR A SHORT TO VOLTAGE
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 2 | 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.