B1205

DTC B1205: Climate Control Unit Lost Communication with the Gauge Control Module (VSP/NE messages)

1. Turn the ignition switch ON (II).
2. Push the AUTO button.

Does the climate control turn on?

YES - Go to step 3.

NO - Go to climate control power and ground circuit troubleshooting.

3. Clear the DTCs using the HDS.
4. Turn the ignition switch OFF, and then ON.
5. Turn the climate control system on and operate several functions. (A/C on/off, air mix and blend door operations, temperature settings etc.)
6. Check for DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B7205, B1206 and/or B1207 indicated?

YES - Go to step 7.

NO - Intermittent failure, the gauge control module and climate control unit are OK at this time.

7. Check the DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B1008, B1060 and/or B1061 indicated?

YES - Perform the Gauge Control Module Input Test. Component Tests and General Diagnostics

NO - Go to step 8.

8. Disconnect audio-HVAC display panel connector B (16P).
9. Disconnect the under-dash fuse/relay box connector N (45P) from the fuse/relay box.




10. Check for continuity between the No.22 terminal of under-dash fuse/relay box connector N (45P) and the No.14 terminal of the audio-HVAC display panel connector B (16P).

Is there continuity?

YES - The gauge control module and/or climate control unit faulty. Substitute one component at a time and recheck. Replace the component that eliminates the DTC/symptom.

NO - Repair open in the wire between the gauge control module and the audio-HVAC display panel.