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 resistance less than 5 ohms?
Yes | No |
|---|---|
GO to HV16 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
HV16 CHECK THE FSS CIRCUIT FOR A SHORT TO GROUND
• Measure the resistance between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) |
|---|---|
FSS - Pin 3 | Ground |
Is the resistance greater than 10K ohms?
Yes | No |
|---|---|
GO to HV17 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
HV17 CHECK THE FSS CIRCUIT FOR A SHORT TO VOLTAGE
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) |
|---|---|
FSS - Pin 3 | Ground |
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to HV18 . |
HV18 CHECK THE FUNCTIONALITY OF THE FSS CIRCUIT
• Ignition OFF.
• PCM connector connected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) |
|---|---|
FSS - Pin 3 | Ground |
Is the voltage greater than 10.5 V?
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.