Pinpoint Test J: The Speed Control Switch Is Inoperative - Coast

WARNING: This page is about a different car, the 2004 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Test Step

J1 CHECK THE SPEED CONTROL ACTUATOR SWITCH COAST PID

Key in ON position.
Monitor the speed control actuator COAST PID. Press and release the speed control actuator switch COAST button while slightly turning the steering wheel from side to side.
Does the diagnostic tool indicate ACTIVE with the speed control actuator switch pressed and not ACTIVE with the speed control actuator switch released?

Result / Action to Take

Yes

System is OK.

GO to J2.

Test Step

J2 CHECK THE SPEED CONTROL ACTUATOR SWITCH COAST

Key in OFF position.
Disconnect: Speed Control Actuator C122.
Measure the resistance between speed control actuator C122 pin 5, circuit 151 (LB/BK), harness side, and speed control actuator C122 pin 6, circuit 848 (DG/OG), harness side, while pressing the speed control actuator switch COAST and slightly turning the steering wheel from side to side.

Fig 1: Measuring Resistance Between Speed Control Actuator C122 Pin 5 And Speed Control Actuator C122 Pin 6
Courtesy of FORD MOTOR CO.
Is the resistance between 108 and 132 ohms with COAST pressed and greater than 10,000 ohms with COAST released?

Result / Action to Take

Yes

INSTALL a new speed control actuator. REFER to SPEED CONTROL SERVO . TEST the system for normal operation.

INSTALL a new speed control actuator switch. REFER to SPEED CONTROL SWITCH . TEST the system for normal operation.