Climate Control

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

DTC B1206: Front Climate Control Unit Lost Communication with Gauge Control Module (ENGTEMP message)

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

1. Push the AUTO button.

Does the climate control turn on?

YES - Go to step 2.

NO - Go to front climate control unit power and ground circuits troubleshooting. Front Climate Control Unit Power and Ground Circuit Troubleshooting

2. Turn the ignition switch to LOCK (0), then turn to ON (II).
3. Turn the climate control system on and operate several functions (A/C ON/OFF, air mix and blend door operations, temperature settings etc.).
4. Check for DTCs using the HDS.

Is DTC indicated?

YES -
- DTC B1205 indicated: go to step 5.
- DTC B1206 or B1207 indicated: go to step 6.

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

5. Check for DTCs using the HDS.

Is DTC B1060 indicated?

YES - Do the gauge control module self-diagnostic mode.

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

6. Disconnect the front climate control unit 30P connector.
7. Remove the gauge control module.
8. Check for continuity between the No. 7 terminal of the front climate control unit 30P connector and the No. 25 terminal of the gauge control module connector A (30P).






Is there continuity?

YES - Check for loose wire or poor connections at the front climate control unit 30P connector and at the gauge control module connector A (30P). If the connections are good, substitute a known-good front climate control unit and/or gauge control module, and recheck. If the symptom/indication goes away, replace the original front climate control unit and/or gauge control module.

NO - Repair open in the wire between the front climate control unit and the gauge control module.