DTC B136B-64: Suspension Control Module Wake-up Signal - Signal plausibility failure: Action

NOTE: Wake up signal from the BCM/GWM has not been received by the CHCM when the vehicle was unlocked.

Using the Jaguar Land Rover approved diagnostic equipment, check the Body Control Module/Gateway Module (BCM/GWM) for related DTCs. Repair as required, clear the DTCs and retest
Using the Jaguar Land Rover approved diagnostic equipment, check the Body Control Module/Gateway Module (BCM/GWM) has the correct calibration data and software versions installed. Update the module as required, clear the DTCs and retest
Refer to the electrical circuit diagrams and check the chassis control module power, ground, ignition and air suspension control signal circuits for short circuit to ground, open circuit high resistance. Repair circuit as required, clear the DTCs and retest