DTC U0284-87: Lost Communication with Active Grille Air Shutter Module "A" - Missing message: Action
NOTE:
The FlexRay wiring harness must not be repaired by making a localized wiring repair. A new wiring harness should be installed.
- Refer to the appropriate System Wiring Diagram(s) and check the upper active grille air shutter motor power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the appropriate System Wiring Diagram(s) 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, check for other upper active grille air shutter related DTCs and perform the relevant corrective actions