P0703-62: Brake Switch B Circuit - Signal compare failure: Action
- Vehicle Conditions to enable DTC Logging Strategy
- Accelerate vehicle continuously for 2 minutes, make sure brake pedal not pressed throughout. A simpler test process being through off board scan tool monitor the status of "Engine Input 1" "brake switch" and "brake switch 2". When the brake pedal is not pressed both parameters should equal 0
- Prioritized Checks to Perform
- Using the Jaguar Land Rover approved diagnostic equipment check "Network Overview" for off bus control modules
- Check powertrain control module for related Diagnostic Trouble Codes and refer to relevant DTC index
- Refer to the electrical circuit diagrams and check the brake pedal switch circuits for open circuit, short circuit to ground, short circuit to power
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Install new brake pedal switch, only when diagnosed as failed
- Using the Jaguar Land Rover approved diagnostic equipment, clear all stored Diagnostic Trouble Codes and retest