DTC C1D00-86: Park Brake Apply Switch - Signal invalid: Action
- Check for any electric park brake actuator-related DTCs and refer to the relevant DTC index
- Refer to the electrical circuit diagrams and check the electric park brake switch circuits for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the circuits as required
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new electric park brake switch as required