## DTC Troubleshooting: B

DTC indicator B: | A Short in the In-car Temperature Sensor Circuit

1. | Clear the DTC by turning the ignition switch OFF, and then ON (II).

2. | Operate the climate control system in several modes.

3. | Check for DTCs using the self-diagnostic. Is DTC B indicated? YES - Go to 4. NO - Intermittent failure.n

4. | Turn the ignition switch OFF.

5. | Remove the in-car temperature sensor and test it. Does the in-car temperature sensor test OK? YES - Go to 6. NO - Replace the in-car temperature sensor.n

6. | Disconnect climate control unit 28P connector.

7. | Check for continuity between the No. 28 terminal of climate control unit 28P connector and body ground. Is there continuity? YES - Go to 8. NO - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.n

8. | Check for continuity between the No. 28 terminal and the No. 18 terminal of climate control unit 28P connector. Is there continuity? YES - Repair short in the wires between the climate control unit and the in-car temperature sensor.n NO - Repair short to body ground in the wire between the climate control unit and the in-car temperature sensor.n