An Open In the Humidity Sensor Circuit

DTC Troubleshooting: B2967 or Indicator A and Windshield Defrost

DTC B2967 or DTC indicator A and WINDSHIELD DEFROST: An Open in the Humidity Sensor Circuit

1. Clear the DTC with the HDS.

2. Turn the ignition switch to LOCK (0), and then to ON (II).

3. Do the self-diagnostic function with the HDS Initial Inspection and Diagnostic Overview or climate control unit. Initial Inspection and Diagnostic Overview

4. Check for DTCs.

Is DTC B2967 or A and WINDSHIELD DEFROST indicated?
YES - Go to step 5.

NO - Intermittent failure, check for loose wires or poor connections on the humidity sensor circuit.


5. Turn the ignition switch to LOCK (0).

6. Remove the humidity/in-car temperature sensor, Service and Repair and test it. Humidity/In-Car Temperature Sensor Test

Is the humidity sensor OK?
YES - Go to step 7.

NO - Replace the humidity/in-car temperature sensor.


7. Disconnect the humidity/in-car temperature sensor 4P connector.

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 humidity/in-car temperature sensor 4P connector.





Is there continuity?
YES - Check for loose wires or poor connections at climate control unit connector A (40P) and at the humidity/in-car temperature sensor 4P connector. If the connections are good, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.

NO - Repair open in the wire(s) between the climate control unit and the humidity sensor.