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.
KN10 CHECK THE FCV CIRCUIT FOR A SHORT TO GROUND
• Measure the resistance between:
( + ) Cooling Fan Motor 1 Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 4 | Ground |
• Measure the resistance between:
( + ) Cooling Fan Motor 2 Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 4 | Ground |
• For all others,
• Measure the resistance between:
( + ) CF Module Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 4 | Ground |
Are the resistances greater than 10k ohms?
Yes | No |
|---|---|
GO to KN11 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
KN11 CHECK THE FCV CIRCUIT FOR A SHORT TO VOLTAGE
• Ignition ON, engine OFF.
• For Edge and MKX,
• Measure the voltage between:
( + ) Cooling Fan Motor 1 Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 4 | Ground |
• Measure the voltage between:
( + ) Cooling Fan Motor 2 Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 4 | Ground |
• For all others,
• Measure the voltage between:
( + ) CF Module Connector, Harness Side | ( - ) |
|---|---|
FCV - Pin 4 | 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.