DTC B1D64-04: Left Headlamp Swivelling Motor - System internal failures: Action

NOTE: To validate the repair use the Jaguar Land Rover approved diagnostic equipment to perform the routine - On Demand Self Test. If the repair is successful this DTC will no longer be set within the body control module. Alternatively run the engine for 30 seconds, then use the Jaguar Land Rover approved diagnostic equipment to check this DTC is no longer set within the body control module

Refer to the appropriate system wiring diagrams and check the adaptive front lighting 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 left headlamp assembly