DTC B
DTC indicator B: A Short in the In-car Temperature Sensor Circuit1. Remove the in-car temperature sensor.
2. Test the in-car temperature sensor.
Is the resistance within the specifications shown on the graph?
YES - Without Navigation System: Go to step 3.
With Navigation System: Go to step 5.
NO - Replace the in car temperature sensor.
3. Disconnect climate control unit connector B (20P).
4. Check for continuity between the No.16 terminal of climate control unit connector B (20P) and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between the climate control unit and the in-car temperature sensor.
NO - Substitute a known-good climate control unit, and recheck If the symptom/indication goes away, replace the original climate control unit.
5. Disconnect climate control unit connector B (26P).
6. Check for continuity between the No.17 terminal of climate control unit connector B (26P) and body ground.
Is there continuity?
YES - Repair short to body ground in the wire between the climate control unit and the in-car temperature sensor.
NO - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.