terminal No. 2.
Is there continuity?
YES -
Go to step 9.
NO -
Repair an open in the wire between the climate control unit and the outside air temperature sensor.?
9. Check for continuity between climate control unit connector A (40P) terminal No. 8 and outside air temperature sensor 2P connector terminal
No. 1.
Is there continuity?
YES -
Check for loose wires or poor connections at climate control unit connector A (40P) 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 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 outside air temperature sensor.?
B1228
DTC Troubleshooting: B1228 (D and AUTO)
DTC B1228 or DTC indicator D and AUTO:
A Short in the Outside Air Temperature Sensor Circuit
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
