Heating and A/C

DTC Troubleshooting: B1205, B1206, B1207

DTC B1205:

A/C Control Panel Lost Communication with Gauge Control Module (VSP/NE message)

DTC B1206:

A/C Control Panel Lost Communication with Gauge Control Module (ENGTEMP message)

DTC B1207:

A/C Control Panel Lost Communication with Gauge Control Module (ILLUMI message)

1. Turn the ignition switch to LOCK (0), then turn to ON (II).

2. Turn the A/C control system on and operate several functions (A/C ON/OFF, air mix and blend door operations, temperature settings etc.).

3. Check for DTCs using the HDS How to Troubleshoot the Heating and A/C Systems.

Is DTC indicated?

YES -

- DTC B1205 indicated: Go to step 4.
- DTC B1206 or B1207 indicated: Go to step 5.

NO -

Intermittent failure, the gauge control module and A/C control panel are OK at this time.�

4. Check for DTCs using the HDS.

Is DTC B1060 indicated?

YES -

Do the gauge control module self-diagnostic function Initial Inspection and Diagnostic Overview.�

NO -

The A/C control panel is faulty, replace the A/C control panel.�

5. Disconnect A/C control panel connector A (22P).

6. Disconnect gauge control module connector A (30P) Service and Repair.

7. Check for continuity between A/C control panel connector A (22P) terminal No. 10 and gauge control module connector A (30P) terminal No. 25.





Is there continuity?

YES -

Check for loose wire or poor connections at A/C control panel connector A (22P) and at the gauge control module connector A (30P). If the connections are good, substitute a known-good A/C control panel and/or gauge control module, and recheck. If the symptom/indication goes away, replace the original A/C control panel A/C Control Panel Removal/Installation and/or gauge control module Service and Repair.�

NO -

Repair an open in the wire between the A/C control panel and the gauge control module.�