DTC B100D-77: Column Lock Authorization - Commanded position not reachable: Action
- Using the JLR approved diagnostic equipment, check datalogger signal - Main ECU Supply Voltage (0xDD02). Refer to the appropriate SYSTEM WIRING DIAGRAMS and check the electric steering column lock power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the relevant section of the service information and check the battery and charging system
- Turn the steering wheel to ensure that the electric steering column lock mechanism is free to move. Using the JLR approved diagnostic equipment, clear the DTCs and retest
- Using the JLR approved diagnostic equipment, perform a CAN network integrity test. Refer to the appropriate SYSTEM WIRING DIAGRAMS and check the high speed CAN bus (powertrain) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
- Using the JLR approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test. If the fault persists, install a new electric steering column lock control module