U0242-87: Lost Communication With Headlamp Control Module "B" - Missing message: Action
- Refer to the electrical circuit diagrams and check the Headlamp Control Module B power supply circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the circuit as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the SUB-CAN network for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the circuit as necessary