DTC Troubleshooting: B1227 (C)

  1. Check for continuity between the climate control unit 32P connector terminal No. 24 and the outside air temperature sensor 2P connector terminal No. 2.
Is there continuity?
YES -
Check for loose wires or poor connections at the climate control unit 32P connector and at the outside air 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 .■
NO -
Repair open in the wire between the climate control unit and the outside air temperature sensor.■