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

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


B1-B2:






B2-B3:






B4-B6:






B6-B7:






Normal Operation
The speed control deactivator switch interrupts the power signal to the powertrain control module (PCM) through circuit 307 (BK/YE) when the brake pedal is applied firmly.

DTC P1703 - 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.

Possible Causes
- Fuse
- Circuit 307 (BK/YE) open or short to voltage
- Circuit 1929 (GY/YE) open
- Circuit 569 (DG) open
- Stoplamp switch
- Speed control deactivator switch
- PCM