DTC B1974-87: Rear View Mirror Module - Missing Message: Action
NOTE:
To validate the repair, activate the smart rear view mirror and drive the vehicle for at least 10 minutes on a standard road and check the smart rear view mirror function. Then check this DTC is no longer set within the body control module
- Refer to the electrical circuit diagrams and check all smart rear view mirror module wiring harness connections for security/damage and repair as necessary
- Refer to the electrical circuit diagrams and check the smart rear view mirror module power supply circuit for short circuit to power, short circuit to ground, open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the electrical circuit diagrams and check the smart rear view mirror module LIN bus connection for short circuit to power, short circuit to ground, open circuit, high resistance. Repair the wiring harness as necessary
- Check the correct smart rear view mirror module is installed, replace as necessary. Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and perform the validation checks
- Using the Jaguar Land Rover approved diagnostic equipment, check the body control module for any smart rear view mirror module communication related Diagnostic Trouble Code(s) and perform the recommended corrective actions. Clear the Diagnostic Trouble Code(s) and retest
- If the fault persists, install a new smart rear view mirror module as necessary