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.
GO to KC3 . | GO to KC7 . |
KC3 CHECK THE GND CIRCUIT FOR AN OPEN
• Ignition OFF.
• For DTCs P027B or U016C,
• Measure the resistance between:
( + ) Fuel Pump Control Module 2 Module Connector, Harness Side | ( - ) |
|---|---|
GND - Pin 4 | Ground |
• For all others,
• Measure the resistance between:
( + ) Fuel Pump Control Module Connector, Harness Side | ( - ) |
|---|---|
GND | Ground |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to KC4 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
KC4 CHECK THE FPC AND FPM CIRCUITS FOR AN OPEN
• PCM connector disconnected.
• For DTCs P027B or U016C,
• Measure the resistance between:
( + ) Fuel Pump Control Module 2 Module Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
FPC - Pin 3 | FPC |
FPM2 - Pin 7 | FPM2 |
• For all others,
• Measure the resistance between:
( + ) Fuel Pump Control Module Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
FPC | FPC |
FPM | FPM |
Are the resistances less than 5 ohms?
Yes | No |
|---|
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.