B1207

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

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 by turning the ignition switch OFF, and then ON (II).
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. Check 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 audio-HVAC display panel is faulty, replace the audio-HVAC display panel.