P0703

Tests 1 - 2:

Tests 3 - 7:

Tests 8 - 9:

SYMPTOM
P0703 - BRAKE SWITCH SENSE CIRCUIT

WHEN MONITORED
TEST # 1:
Vehicle speed greater than 17 MPH to enable.
TEST # 2:
Speed must be 0 and brake switch indicates ON.

SET CONDITION
TEST # 1:
If vehicle speed goes to 0 MPH without brake input. Condition must be repeated 9 times to set fault. Two trip fault.
TEST # 2:
If vehicle speed go above 17 MPH for more than 6.4 seconds without a change in brake state. Condition must be repeat 9 times to set fault.

POSSIBLE CAUSES
- Intermittent condition
- Fused B+ circuit
- Brake switch sense circuit shorted to voltage
- Brake switch sense shorted to ground
- Brake switch sense circuit open
- Ground circuit open
- Brake lamp switch operation
- PCM