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.
AB6 CHECK FOR VOLTAGE
• Fuel Injector Heater Control-A Module connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Fuel Injector Heater Control-A Module Connector, Harness Side | ( - ) |
|---|---|
VBATT - Pin 5 | Ground |
VPWR - Pin 4 | Ground |
Are the voltages greater than 10.5 V?
Yes | No |
|---|---|
GO to AB7 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
AB7 CHECK THE PWRGND CIRCUIT FOR AN OPEN
• Ignition OFF.
• Measure the resistance between:
( + ) Fuel Injector Heater Control-A Module Connector, Harness Side | ( - ) |
|---|---|
PWRGND - Pin 3 | Ground |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to AB8 . | REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test. |
AB8 CHECK THE CONTROL CIRCUITS FOR AN OPEN
• PCM connector disconnected.
• Measure the resistance between:
( + ) Fuel Injector Heater Control-A Module Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
FIHC - Pin 2 | FIHC |
FIHM - Pin 1 | FIHM |
Are the resistances less than 5 ohms?
Yes | No |
|---|---|
GO to AB9 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
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.