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:

B5-B6:

Normal Operation
The speed control deactivator switch interrupts the power signal to the powertrain control module (PCM) through circuit 636 (OG) when the brake pedal is applied firmly. This is a redundant signal to the PCM.

Possible Causes
- Fuse
- Circuit 22 (LB/PK)
- Circuit 636 (OG) open or short to voltage
- Circuit 1651 (WH/RD) open
- Stoplamp switch
- Speed control deactivator switch
- PCM