Pinpoint Test A: No Communication With The Speed Control Actuator

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

A1 CHECK CIRCUIT 601 (LB/PK) FOR VOLTAGE
- Disconnect: Speed Control Actuator C122.
- Key in ON position.
- Measure the voltage between the speed control actuator C122-7, circuit 601 (LB/PK), harness side and ground.
  
  Fig 1: Checking Circuit 601 (LB/PK) For Voltage
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes

GO to A2

No

REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
A2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
- Key in OFF position.
- Measure the resistance between the speed control actuator C122-10, circuit 1205 (BK), harness side and ground.
  
  Fig 2: Measuring Resistance Between Speed Control Actuator C122-10, Circuit 1205 (BK), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes

Refer to MODULE COMMUNICATIONS NETWORK to continue communication diagnostics.

No

REPAIR the circuit. CLEAR DTCs. REPEAT the self-test.