terminal No. 1.
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.?
B1232
DTC Troubleshooting: B1232 (H and AUTO)
DTC B1232 or DTC indicator H and AUTO:
A Short in the Front Evaporator Temperature Sensor 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 B1232 or H and AUTO indicated?
YES -
Go to step 5.
NO -
Intermittent failure.?
5. Turn the ignition switch to LOCK (0).
6. Remove the front evaporator temperature sensor See: Heating and Air Conditioning/Evaporator Temperature Sensor / Switch/Service and
Repair/Front Evaporator Temperature Sensor Replacement, and test it See: Heating and Air Conditioning/Evaporator Temperature Sensor /
Switch/Testing and Inspection.
Is the front evaporator temperature sensor OK?
YES -
With the front evaporator temperature sensor disconnected, go to step 7.
NO -
Replace the front evaporator temperature sensor See: Heating and Air Conditioning/Evaporator Temperature Sensor / Switch/Service and
