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.
Are the resistances less than 5 ohms?
Yes | No |
|---|---|
GO to FA3 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
FA3 CHECK FOR A SHORT TO GROUND
• For Focus,
• Measure the resistance between:
( + ) Right Exterior Rear View Mirror Assembly Connector, Harness Side | ( - ) |
|---|---|
AAT - Pin 9 | Ground |
• For all others,
• Measure the resistance between:
( + ) AAT Sensor Connector, Harness Side | ( - ) |
|---|---|
AAT | Ground |
Is the resistance greater than 10K ohms?
Yes | No |
|---|---|
GO to FA4 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
FA4 CHECK FOR A SHORT TO VOLTAGE
• Ignition ON, engine OFF.
• For Focus,
• Measure the voltage between:
( + ) Right Exterior Rear View Mirror Assembly Connector, Harness Side | ( - ) |
|---|---|
AAT - Pin 9 | Ground |
SIGRTN - Pin 10 | Ground |
• For all others,
• Measure the voltage between:
( + ) AAT Sensor Connector, Harness Side | ( - ) |
|---|---|
AAT | Ground |
SIGRTN | Ground |
Is any voltage present?
Yes No
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.