B1207

DTC B1207: Climate Control Unit Lost Communication with Gauge Control Module (ILLUMI message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A.

1. Clear the DTC with the HDS.
2. Operate the climate control system in several modes.
3. Check for DTCs using the HDS.

Is DTC B1207 indicated?

YES - Go to step 4.

NO - Intermittent failure, check for loose wires or poor connections on the gauge control module circuit.

4. Clear for DTCs using the HDS.

Is DTC B2157 indicated?

YES - Go to the gauge control module input test. Gauge Control Module Input Test

NO - The climate control unit is faulty, replace the climate control unit.