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.
Is the resistance within specification?
Yes | No |
|---|---|
GO to KP4 . | INSTALL a new Charge Air Cooler (CAC) Coolant Temperature sensor. REFER to the Workshop Manual 303-14, Electronic Engine Controls. RESET the keep alive memory (KAM), REFER to Section 2, Resetting The Keep Alive Memory (KAM). Clear the PCM DTCs. REPEAT the self-test. |
KP4 CHECK THE CAC COOLANT TEMPERATURE SENSOR CIRCUITS FOR AN OPEN
• PCM connector disconnected.
• Measure the resistance between:
( + ) Charge Air Cooler (CAC) Coolant Temperature Sensor Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
CACCTS - Pin 1 | CACCTS - Pin E23 |
SIGRTN - Pin 2 | SIGRTN - Pin B19 |
Are the resistances less than 5 ohms?
Yes | No |
|---|---|
GO to KP5 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
KP5 CHECK THE CAC COOLANT TEMPERATURE SENSOR CIRCUITS FOR A SHORT TO GROUND
• Measure the resistance between:
( + ) Charge Air Cooler (CAC) Coolant Temperature Sensor Connector, Harness Side | ( - ) |
|---|---|
CACCTS - Pin 1 | Ground |
SIGRTN - Pin 2 | Ground |
Are the resistances greater than 10K ohms?
Yes | No |
|---|---|
GO to KP6 . | REPAIR the short 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.