M And AUTO

DTC Troubleshooting: B2967 (M and AUTO)

DTC B2967 or DTC indicator M and AUTO:

An Open in the Humidity Sensor Circuit

1. Clear the DTC with the HDS.

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

3. Do the Self-Diagnostic Function with the HDS or the climate control unit.

4. Check for DTCs.

Is DTC B2967 or M and AUTO 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. Disconnect climate control unit connectors A (32P) and B (16P).

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

8. Check for continuity between the following terminals of climate control unit connectors A (32P) and B (16P) and humidity/in-car temperature sensor 4P connector.













Is there continuity?

YES -

Go to step 9.

NO -

Repair an open in the wire(s) between the climate control unit and the humidity/in-car temperature sensor.�

9. Reconnect the humidity/in-car temperature sensor 4P connector.

10. Reconnect climate control unit connectors A (32P) and B (16P).

11. Test the humidity sensor.

Is the humidity sensor OK?

YES -

Check for loose wires or poor connections at climate control unit connectors A (32P) and B (16P) 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 Climate Control Unit Removal/Installation.�

NO -

Replace the humidity/in-car temperature sensor Service and Repair.�