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) Turn the ignition switch ON (II). 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 .■
Clear the DTCs using the HDS. Turn the ignition switch OFF, and then ON (II). Turn the climate control system on and operate several functions. (A/C on/off, air mix and blend door operations, temperature settings etc.) 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.■
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 .
Disconnect climate control unit connector B (16P). Disconnect under-dash fuse/relay box connector N (45P) from the fuse/relay box. 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.■