Pinpoint Test D: Flash Code 1 - Dynamic Pull Occurs At Throttle And Speed Control Inoperative

WARNING: This page is about a different car, the 2005 Mercury Sable and 2005 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

D1 CHECK THE SPEEDOMETER OPERATION
- Check the speedometer for correct operation.
- Does the speedometer operate correctly?
- Yes : GO to D2.
- No : REFER to INSTRUMENT CLUSTER to continue diagnosis of the speedometer.
D2 CHECK CIRCUIT 679 (GY/BK) FOR AN OPEN
- Key in OFF position.
- Disconnect: Speed Control Actuator C122.
- Disconnect: PCM C175.
- Measure the resistance between the speed control actuator C122 pin 3, circuit 679 (GY/BK), harness side and the PCM C175 pin 68, circuit 679 (GY/BK), harness side.
  
  Fig 1: Measuring Resistance Between Speed Control Actuator C122 Pin 3, Circuit 679 (GY/BK), Harness Side And PCM C175 Pin 68, Circuit 679 (GY/BK), Harness Side
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : INSTALL a new speed control actuator. REFER to SPEED CONTROL ACTUATOR . TEST the system for normal operation.
- No : REPAIR the circuit. TEST the system for normal operation.