Pinpoint Test D: The Speed Control Does Not Disengage When The Clutch Is Applied
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- D1 CHECK THE CLUTCH PEDAL POSITION (CPP) SWITCH PID
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: Powertrain Control Module (PCM) CPP Switch PID.
- Monitor the PCM CPP switch PID while pressing and releasing the clutch pedal.
- Does the CPP switch PID agree with the clutch pedal position?
- Yes : GO to D3.
- No : GO to D2.
- D2 CHECK CIRCUIT 306 (RD/LG) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: PCM C175b-5b.
- Disconnect: CPP Switch CV257.
- Measure the resistance between the PCM C175b-38, circuit 306 (RD/LG), harness side and ground.
- Is the resistance greater than 10,000 ohms?
- Yes : INSTALL a new CPP switch. REFER to ELECTRONIC ENGINE CONTROLS . TEST the system for normal operation.
- No : REPAIR the circuit. TEST the system for normal operation.
- D3 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
- Corrosion
- Pushed-out pins
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.