DTC Troubleshooting: B
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.
 CLIMATE CONTROL UNIT 28P CONNECTORWire side of female terminalsLT BLUIs 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.
 CLIMATE CONTROL UNIT 28P CONNECTORWire side of female terminalsLT BLULT GRNIs 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 |