B1207
DTC Troubleshooting: B1205, B1206, B1207, Indicator H, Indicator J, or Indicator K
DTC B1205 or DTC indicator H: Climate Control Unit Lost Communication with Gauge Control Module (VSP/NE message)
DTC B1206 or DTC indicator K: Climate Control Unit Lost Communication with Gauge Control Module (ECT message)
DTC B1207 or DTC indicator J: Climate Control Unit Lost Communication with Gauge Control Module (ILLUMI message)
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A. Troubleshooting - B-CAN System Diagnosis Test Mode A
1. Clear the DTC with the HDS.
2. Turn the ignition switch to LOCK (0), and then to ON (II).
3. Do the self-diagnostic with the HDS Initial Inspection and Diagnostic Overview or climate control unit. Initial Inspection and Diagnostic Overview
4. Check for DTCs.
Are DTC B1205 or H indicated?
YES - Go to step 5.
NO - The system is OK at this time, check for loose wires or poor connections on the gauge control module and climate control unit circuit.
5. Check for DTCs with the HDS.
Are DTC B1008, B1011, B1032, B1205, B1206, B1207, and B1906 also indicated?
YES - Go to step 6.
NO - The climate control unit is faulty. Replace the climate control unit.
6. Select UNIT INFORMATION in the BODY ELECTRICAL menu.
7. Select CONNECTED UNIT in the UNIT INFORMATION menu.
Is gauge control module detected?
YES - Substitute a known-good gauge control module, and recheck. If the symptom/indication goes away, replace the gauge control module. Service and Repair
NO - Go to step 8.
8. Disconnect under-dash fuse/relay box connector Q (16P).
9. Disconnect the gauge control module 36P connector.
10. Check for continuity between under-dash fuse/relay box connector Q (16P) No. 6 terminal and the gauge control module 36P connector No. 30 terminal.
Is there continuity?
YES - Go to the gauge control module input test. Component Tests and General Diagnostics
NO - Repair open in the wire between the MICU and the gauge control module.
