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.
FA: Ambient Air Temperature (AAT) Sensor
FA: Introduction
FA1 CHECK FOR DTCS
Are DTCs P0071, P0072, P0073 or P0074 present?
Yes | No |
|---|---|
GO to FA2 . | RETURN to Section 3 , Symptom Charts for further direction. |
FA2 CHECK FOR AN OPEN
• Ignition OFF.
• For Fiesta,
• AAT Sensor connector disconnected.
• IPC connector disconnected.
• Measure the resistance between:
( + ) AAT Sensor Connector, Harness Side | ( - ) IPC Connector, Harness Side |
|---|---|
AAT | AAT |
SIGRTN | SIGRTN |
• For Focus,
• Right Exterior Rear View Mirror Assembly connector disconnected.
• PCM connector disconnected.
• Measure the resistance between:
( + ) Right Exterior Rear View Mirror Assembly Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
AAT - Pin 9 | AAT |
SIGRTN - Pin 10 | SIGRTN |
• For all others,
• AAT Sensor connector disconnected.
• PCM connector disconnected.
• Measure the resistance between:
( + ) AAT Sensor Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
AAT | AAT |
SIGRTN | 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.