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.
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to FA5 . |
FA5 INTERMITTENT CHECK
• Ignition OFF.
• For Fiesta,
• IPC connector connected.
• For all others,
• PCM connector connected.
• For Focus,
• Right Exterior Rear View Mirror Assembly connector connected.
• For all others,
• AAT Sensor connector connected.
• Ignition ON, engine OFF.
• Access the PCM and monitor the AAT (TEMP) PID.
• While observing the PID, carry out the following:
◾ Lightly tap on the sensor and wiggle the accessible harness from the sensor to the module. ◾ Wiggle the connectors and make sure they seat correctly. ◾ Look for sudden changes in the temperature when the sensor is tapped and the harness
and connector are wiggled.
Is a concern present?
Yes | No |
|---|---|
REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. | GO to FA6 . |
FA6 CHECK THE RESISTANCE OF THE AAT SENSOR
Note: Verify the external temperature of the sensor is at ambient temperature. Refer to the chart at the beginning of this test for the resistance specifications.
• Ignition OFF.
• For Focus,
• Right Exterior Rear View Mirror Assembly connector disconnected.
• Measure the resistance between:
( + ) Right Exterior Rear View Mirror Assembly Connector, Component Side | ( - ) Right Exterior Rear View Mirror Assembly Connector, Component Side |
|---|---|
AAT - Pin 9 | SIGRTN - Pin 10 |
• For all others,
• AAT Sensor connector disconnected.
• Measure the resistance between:
( + ) AAT Sensor Connector, Component Side | ( - ) AAT Sensor Connector, Component Side |
|---|---|
AAT | SIGRTN |
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.