DTC Troubleshooting: B1205, B1206, B1207

DTC B1205: Climate Control Unit Lost Communication with the Gauge Control Module (VSP/NE messages) DTC B1206: Climate Control Unit Lost Communication with the Gauge Control Module (ECT messages) DTC B1207: Climate Control Unit Lost Communication with the Gauge Control Module (ILLUMI messages)

1. Turn the ignition switch ON (II).

1. Push the AUTO button.

Does the climate control turn on?

YES | - | Go to Step 3 .
NO | - | Go to climate control power and ground circuits troubleshooting .■

1. Clear the DTCs using the HDS.

1. Turn the ignition switch OFF, and then ON (II).

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

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

Is DTC B1205, 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.■

1. 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 self-diagnostic procedure. ■
NO | - | Go to Step 8 .

1. Disconnect climate control unit connector B (16P).

1. Disconnect under-dash fuse/relay box connector N (45P) from the fuse/relay box.

1. Check for continuity between the No. 22 terminal of under-dash fuse/relay box connector N (45P) and the No. 14 terminal of climate control unit connector B (16P).

Is there continuity?

YES | - | The climate control unit is faulty, replace the climate control unit .■
NO | - | Repair open in the wire between the gauge control module and the climate control unit.■