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 HV14 . | GO to HV13 . |
HV13 CHECK THE VOLTAGE CIRCUIT TO THE FSS FOR AN OPEN
• Ignition OFF.
• PCM connector disconnected.
• Measure the resistance between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
VBPWR - Pin 5 | VBPWR - Pin B1, E36, T3 |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to HV19 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
HV14 CHECK THE GROUND CIRCUIT TO THE FSS FOR AN OPEN
• Ignition OFF.
• PCM connector disconnected.
• Measure the resistance between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
PWRGND - Pin 4 | PWRGND - Pin B69, B70 |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to HV19 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
HV15 CHECK THE FSS CIRCUIT FOR AN OPEN CIRCUIT
• Ignition OFF.
• PCM connector disconnected.
• Measure the resistance between:
( + ) Cooling Fan Clutch Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
FSS - Pin 3 | FSS - Pin B3 |
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.