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.
( + ) APP Sensor Connector, Harness Side | ( - ) |
|---|---|
APP1 | Ground |
APP2 | Ground |
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to DK16 . |
DK8 CHECK THE VOLTAGE TO THE APP SENSOR
• Ignition OFF.
• APP Sensor connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) APP Sensor Connector, Harness Side | ( - ) APP Sensor Connector, Harness Side |
|---|---|
VPWR | GND |
APPVREF2 | APPRTN2 |
Is the VPWR voltage greater than 10.5 V and is the APPVREF2 voltage between 4.5 to 5.5 V?
Yes | No |
|---|---|
GO to DK10 . | For VPWR less than 10.5 V, GO to DK9 . For all others, GO to DK13 . |
DK9 CHECK THE APP SENSOR GND CIRCUIT
• Ignition OFF.
• Measure the resistance between:
( + ) APP Sensor Connector, Harness Side | ( - ) |
|---|---|
GND | Ground |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
REPAIR the open VPWR circuit. Clear the PCM DTCs. REPEAT the self-test. | REPAIR the open GND circuit. 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.