Pinpoint Test E: The Speed Control Does Not Disengage When The Clutch Is Applied - Gasoline Vehicles
WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- E1 CHECK THE CPP SWITCH OUTPUT
- Disconnect: PCM C175b.
- Measure the resistance between the PCM C175b-32, circuit 306 (TN/LB), harness side and ground.
- Is the is the resistance less than 5 ohms?
Yes : Go to E2.
No : Go to E3.
- E2 CHECK CIRCUIT 306 (TN/LB) FOR A SHORT TO GROUND
- Disconnect: CPP Switch C257.
- Measure the resistance between the PCM C175b-32, circuit 306 (TN/LB), harness side and ground.
- Is the resistance less than 5 ohms?
Yes : REPAIR the circuit. TEST the system for normal operation.
No : Go to E3.
- E3 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 are seated 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 - GASOLINE ENGINES .
No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.