DTC B1412-09: Quiescent Relay Box - Component failures: Action
- Refer to the electrical circuit diagrams and check the Quiescent Current Control Module (QCCM) power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the electrical circuit diagrams and check the LIN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and retest. If the fault persists, install a new Quiescent Current Control Module (QCCM) as required