Test A: The Speed Control Is Inoperative

PINPOINT TEST A: THE SPEED CONTROL IS INOPERATIVE

A1-A4:

A5-A7:

Normal Operation
The powertrain control module (PCM) sends a signal through circuit VES10 (WH) to the speed control switches, which passes through the clockspring. The return signal is sent to the PCM through circuit RES08 (GN/BN) and the clockspring. When the brake pedal is applied, voltage is routed to the PCM to deactivate the speed control, if engaged.

The speed control deactivator switch interrupts circuit CES09 (VT/OG), removing the voltage signal to the PCM when the brake pedal is applied. This is a redundant signal to the PCM.

Possible Causes
- Stoplamp switch
- Speed control switch
- Digital transmission range (TR) sensor
- Vehicle speed signal
- PCM