8. Disconnect climate control unit connector A (40P).
9. Check for continuity between the following terminals of climate control unit connector A (40P) and the driver's air mix control motor 7P
connector.
Is there continuity?
YES -
Go to step 10.
NO -
Repair an open in the wire(s) between the climate control unit and the driver's air mix control motor.?
10. Check for continuity between body ground and climate control unit connector A (40P) terminals No. 12 and No. 13 individually.
Is there continuity?
YES -
Repair a short to body ground in the wire(s) between the climate control unit and the driver's air mix control motor.?
NO -
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.?
M
DTC Troubleshooting: B1223 (M)
DTC B1223 or DTC indicator M and MODE:
A Problem in the Rear Blower Motor Circuit
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
