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.
GO to C13 . | INSTALL a new MAP/IAT2 sensor. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. Clear the PCM DTCs. REPEAT the self-test. |
C13 CHECK THE REFERENCE VOLTAGE WITH THE FRP SENSOR CONNECTED
Note: If the vehicle is not equipped with a FRP sensor or if this sensor was used for the VREF measurement in C3, GO to C14 .
• Ignition OFF.
• FRP 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 C14 . | INSTALL a new FRP sensor. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. Clear the PCM DTCs. REPEAT the self-test. |
C14 CHECK THE REFERENCE VOLTAGE WITH THE CRANKCASE PRESSURE SENSOR CONNECTED
Note: If the vehicle is not equipped with a crankcase pressure sensor or if this sensor was used for the VREF measurement in C3, GO to C15 .
• Ignition OFF.
• Crankcase Pressure 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 C15 . | INSTALL a new Crankcase Pressure sensor. REFER to the Workshop Manual Section 303- 08, Engine Emission Control. Clear the PCM DTCs. REPEAT the self-test. |
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.