DTC B1D1B-87: Pneumatic Module - Missing message: Action
- Refer to the electrical circuit diagrams and check the pneumatic module circuit for short circuit to ground, open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the electrical circuit diagrams and check the pneumatic module LIN 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 pneumatic module