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.
( + ) FRPT Sensor Connector, Harness Side | ( - ) FRPT Sensor Connector, Harness Side |
|---|---|
VREF - Pin 3 | SIGRTN - Pin 4 |
• For all others,
• FRP Sensor connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) FRP Sensor Connector, Harness Side | ( - ) FRP Sensor Connector, Harness Side |
|---|---|
VREF | SIGRTN |
Is the voltage between 4.5 - 5.5 V?
Yes | No |
|---|---|
GO to DD9 . | GO to Pinpoint Test C . |
DD9 CHECK THE FRP CIRCUIT FOR AN OPEN
• Ignition OFF.
• PCM connector disconnected.
• For Mustang 5.2L,
• Measure the resistance between:
( + ) FRPT Sensor Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
FRP - Pin 2 | FRP |
• For all others,
• Measure the resistance between:
( + ) FRP Sensor Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
FRP | FRP |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to DD10 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
DD10 CHECK THE FRP CIRCUIT FOR A SHORT TO GROUND
• For Mustang 5.2L,
• 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.