Is there continuity?
YES -
Check for loose wires or poor connections at climate control unit connector A (40P) and at the front evaporator temperature sensor 2P connector.
If the connections are good, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original
climate control unit See: Heating and Air Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?
NO -
Repair an open in the wire between the climate control unit and the front evaporator temperature sensor.?
G and Mode
DTC Troubleshooting: B1245 (G and MODE)
DTC B1245 or DTC indicator G and MODE:
A Short in the Rear Air Mix Control Motor Circuit
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
3. Do the self-diagnostic function with the HDS or the climate control unit.
4. Check for DTCs.
Is DTC B1245 or G and MODE indicated?
YES -
Go to step 5.
NO -
Intermittent failure, check for loose wires or poor connections in the rear air mix control motor circuit.?
5. Check for DTCs.
Are these DTCs also present; B1234 or K and AUTO, and/or B1237 or N and AUTO, and/or B2968 or A and WINDSHIELD DEFROST, and/or
B2980 or B and WINDSHIELD DEFROST?
YES -
Go to step 13.
NO -
Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Test the rear air mix control motor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General
Diagnostics/Rear Air Mix Control Motor Test.
