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.
( + ) Fuel Pump Control Module Relay Connector, ( - ) PCM Connector, Harness
Harness Side Side
FPPWR | FPM |
• Measure the resistance between:
( + ) Fuel Pump Control Module Relay Connector, Harness Side | ( - ) FP Connector, Harness Side |
|---|---|
FPPWR | FPPWR |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to KC23 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
KC23 CHECK THE FPM AND FPPWR CIRCUITS FOR A SHORT TO VOLTAGE
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Fuel Pump Control Module Relay Connector, Harness Side | ( - ) |
|---|---|
FPPWR | Ground |
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to KC24 . |
KC24 CHECK FOR CORRECT FP OPERATION
• Ignition OFF.
• PCM connector connected.
• Fuel Pump Control Module Relay connector connected.
• FP connector connected.
• Ignition ON, engine OFF.
• For EcoSport,
• Connect a 5 amp fused jumper wire between the following:
Point A PCM Connector, Harness Side | Point B |
|---|---|
FP | Ground |
• For all others,
• Connect a 5 amp fused jumper wire between the following:
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.