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.
DN8 TEMPERATURE SENSOR CORRELATION
• IAT2 Sensor connector connected.
• MAP/CACT Sensor connector connected.
• MAP/IAT2 Sensor connector connected.
• TCBP/CACT Sensor connector connected.
• Cold soak the vehicle at ambient temperature for at least 6 hours.
• Ignition ON, engine OFF.
• Access the PCM and monitor the CAC_T (TEMP), IAT (TEMP) and IAT2 (TEMP) PIDs.
Are the IAT, CACT and IAT2 temperature readings within 16.67°C (30°F) of each other?
Yes | No |
|---|---|
GO to DN9 . | For the IAT sensor, GO to Pinpoint Test DA . For all others, CHECK the sensor in question for contamination or obstructions. REPAIR as necessary. If no concerns are present, INSTALL a new sensor in question. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. Clear the PCM DTCs. REPEAT the self-test. |
DN9 TEMPERATURE SENSOR CORRELATION AT OPERATING TEMPERATURE
• Ignition ON, engine running.
• Allow the engine to idle at the normal operating temperature.
• Access the PCM and monitor the CAC_T (TEMP), IAT (TEMP) and IAT2 (TEMP) PIDs.
• Drive the vehicle at a steady speed of 88 km/h (55 mph) for a minimum of 6 minutes.
Does the IAT temperature exceed 65.5°C (150°F), or does the CACT temperature exceed 104.4°C (220°F), or does the IAT2 temperature exceed 115.6°C (240°F)?
Yes | No |
|---|---|
CHECK the charge air cooler (CAC) for debris and obstructed air flow. REPAIR as necessary. If no concerns are present, INSTALL a new sensor in question. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. Clear the PCM DTCs. REPEAT the self-test. | GO to DN10 . |
DN10 CHECK FOR CORRECT PCM OPERATION
• Disconnect all the PCM connectors.
• Visually inspect for:
◾ pushed out pins ◾ corrosion
• Connect all the PCM connectors and make sure they seat correctly.
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.