Test F: Flash Code 4 - Vehicle Speed Signal Circuit Failure

PINPOINT TEST F: FLASH CODE 4 - VEHICLE SPEED SIGNAL CIRCUIT FAILURE

F1-F2:

F2 Continued:

Normal Operation
The vehicle speed signal is sent from the powertrain control module (PCM) to the speed control actuator through circuit 679 (GY/BK). The instrument cluster and 4-wheel drive module (if equipped) also receive the same signal.

Possible Causes
- Circuit 679 (GY/BK)
- Speed control actuator