B1243
DTC B1243 or DTC indicator R: A Problem in the Passenger's Mode Control Linkage, Doors, or Motor1. Clear the DTC by turning the ignition switch to LOCK (0), and then to ON (II).
2. Operate the climate control system in several modes.
3. Check for DTCs using the self-diagnosis or HDS.
Is DTC B1243 or R indicated?
YES - Go to step 4.
NO - Intermittent failure.
4. Turn the ignition switch to LOCK (0).
5. Test the passenger's mode control motor.
Is the passenger's mode control motor OK?
YES - Go to step 6.
NO - Replace the passenger's mode control motor, or repair the passenger's mode control linkage or doors.
6. Disconnect the passenger's mode control motor 10P connector.
7. Disconnect climate control unit connector B (16P).
8. Check for continuity between the following terminals of climate control unit connector B (16P) and the passenger's mode control motor 10P connector.
Is there continuity?
YES - Go to step 9.
NO - Repair open in the wire(s) between the climate control unit and the passenger's mode control motor.
9. Check for continuity between body ground and climate control unit connector B (16P) terminals No. 5 and No. 6 individually.
Is there continuity?
YES - Repair short to body ground in the wire(s) between the climate control unit and the passenger's mode control motor.
NO - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.