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Symptom: P0703-BRAKE SWITCH SENSE CIRCUIT When Monitored and Set Condition: 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 POSSIBLE CAUSES GOOD TRIP EQUAL TO ZERO 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 TEST ACTION APPLICABILITY 1 NOTE: Ensure the Brake Switch is adjusted properly before continuing. t, read DTC’s. Is the Good Trip displayed and equal to zero? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 2 Turn the ignition off. All Yes → Go To 3 No → Repair the Fuse B+ circuit. Perform POWERTRAIN VERIFICATION TEST VER - 4. 143 DRIVEABILITY - SBEC |