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

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

C1-C2:

C3-C4:

C4-C5:

C6-C7:

C8:

Normal Operation
The stoplamp switch sends a voltage signal through circuit CCB08 (VT/WH) to the PCM when the brake pedal is applied, and deactivates the speed control if engaged. The speed control deactivator switch sends a voltage signal through circuit CES09 (VT/OG) to the PCM when the brake pedal is not applied. When the brake pedal is applied firmly, the voltage signal is removed and the speed control is deactivated.
- DTC P1572 (Brake Pedal Switch Circuit) - sets when the PCM does not sense the proper sequence of the brake pedal input signal from both the speed control deactivator and stoplamp switches when the brake pedal is pressed and released.
- DTC P1703 (Brake Switch Out of Self-Test Range) - sets when there is an open or short in the deactivator switch circuits or when there is an open or short in the stoplamp circuits.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Stoplamp switch
- Speed control deactivator switch
- PCM