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.
( + ) Charge Air Cooler (CAC) Pump Connector, Harness ( - ) PCM Connector, Harness
Side Side
CAC - Pin 3 | CAC - Pin E13 |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to KP12 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
KP12 CHECK THE CAC CIRCUIT FOR A SHORT TO GROUND
• Measure the resistance between:
( + ) Charge Air Cooler (CAC) Pump Connector, Harness Side | ( - ) |
|---|---|
CAC - Pin 3 | Ground |
Is the resistance greater than 10K ohms?
Yes | No |
|---|---|
GO to KP13 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
KP13 CHECK THE CAC CIRCUIT FOR A SHORT TO VOLTAGE
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Charge Air Cooler (CAC) Pump Connector, Harness Side | ( - ) |
|---|---|
CAC - Pin 3 | Ground |
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | INSTALL a new Charge Air Cooler (CAC) Pump. REFER to the Workshop Manual Section 303-03, Charge Air Cooling. Clear the PCM DTCs. REPEAT the self-test. |
KP14 CHECK FOR CORRECT PCM OPERATION
• Disconnect all the PCM connectors.
• Visually inspect for:
◾ pushed out pins
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.