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.
VREF | Ground |
Is the voltage between 4.5 - 5.5 V?
Yes | No |
|---|---|
GO to C24 . | INSTALL a new MAPT sensor. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. Clear the PCM DTCs. REPEAT the self-test. |
C24 CHECK THE REFERENCE VOLTAGE WITH THE GENERATOR CURRENT SENSOR CONNECTED
Note: If the vehicle is not equipped with a generator current sensor or if this sensor was used for the VREF measurement in C3, GO to C25 .
Note: Only measure the circuits that apply to the vehicle being diagnosed.
• Ignition OFF.
• Generator Current Sensor connector connected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Suspect Sensor Connector, Harness Side | ( - ) |
|---|---|
VREF | Ground |
Is the voltage between 4.5 - 5.5 V?
Yes | No |
|---|---|
GO to C25 . | INSTALL a new Generator Current sensor. REFER to the Workshop Manual Section 414- 01, Battery, Mounting and Cables. Clear the PCM DTCs. REPEAT the self-test. |
C25 CHECK THE REFERENCE VOLTAGE WITH THE MAP/CACT SENSOR CONNECTED
Note: If the vehicle is not equipped with a MAP/CACT sensor or if this sensor was used for the VREF measurement in C3, GO to C26 .
Note: Only measure the circuits that apply to the vehicle being diagnosed.
• Ignition OFF.
• MAP/CACT Sensor connector connected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Suspect Sensor Connector, Harness Side | ( - ) |
|---|---|
VREF | Ground |
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.