Test B: DTC P1572 Or DTC P1703 - Brake On/Off Circuit Failure

PINPOINT TEST B: DTC P1572 OR DTC P1703 - BRAKE ON/OFF CIRCUIT FAILURE

B1-B2:

B2-B4:

B4-B6:

B7:

Normal Operation
When the brake pedal is applied, the smart junction box (SJB) sends a message to the powertrain control module (PCM) to deactivate the speed control, if engaged.

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

Possible Causes
- Fuse
- Circuit CBB42 (GN) open
- Circuit CES09 (VT/OG) open or short to voltage
- Circuit A_CCB08 (VT/WH) open
- Speed control deactivator switch
- PCM