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.
DC15 PRELIMINARY DIAGNOSIS
Are DTCs P0102, P0103, P0104 or P1101 present?
Yes | No |
|---|---|
GO to DC16 . | For symptoms without DTCs, GO to DC16 . For all others, RETURN to Section 3 , Symptom Charts for further direction. |
DC16 CHECK THE INTAKE AIR SYSTEM FOR LEAKS, OBSTRUCTIONS, AND DAMAGE
• Ignition OFF.
• Check the intake air system (air cleaner, housing, and tubes) for obstructions or blockage.
• Check for broken or loose air outlet tube clamps, cracks or holes in the air outlet tube.
• Check for worn gaskets between the MAF/IAT sensor and the air cleaner assembly.
• Check that the MAF/IAT sensor connector is seated correctly.
• Check the throttle body bore for sludge.
• Check the crankcase ventilation system for leaks and restrictions.
Is a concern present?
Yes | No |
|---|---|
REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. | GO to DC17 . |
DC17 CHECK THE VPWR TO THE MAF/IAT SENSOR
• MAF/IAT Sensor connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) MAF/IAT Sensor Connector, Harness Side | ( - ) |
|---|---|
VPWR | Ground |
Is the voltage greater than 10.5 V?
Yes | No |
|---|---|
GO to DC18 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
DC18 CHECK THE MAF HARNESS FOR A OPEN
• Ignition OFF.
• MAF/IAT Sensor connector disconnected.
• PCM connector disconnected.
• Measure the resistance between:
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.