DTC B2967 or DTC indicator A and WINDSHIELD DEFROST: An Open in the Humidity Sensor Circuit
- Clear the DTCs with the HDS.
- Turn the ignition switch to LOCK (0) and then back to ON (II).
- Do the self-diagnostic function with the HDS (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS ) or the climate control unit (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITHOUT THE HDS ).
- 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 in the humidity sensor circuit.
- Turn the ignition switch to LOCK (0).
- Remove the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT
), and test it (see HUMIDITY/IN-CAR TEMPERATURE SENSOR TEST
).
Is the humidity sensor OK?
YES -Go to step 7.
NO -Replace the humidity/in-car temperature sensor (see HUMIDITY/IN-CAR TEMPERATURE SENSOR REPLACEMENT ).
- Disconnect the humidity/in-car temperature sensor 4P connector.
- Disconnect climate control unit connector A (40P).
- Check for continuity between the following terminals of climate control unit connector A (40P) and the humidity/in-car temperature sensor 4P connector.
40P:
No. 6
No. 8
No. 27
4P:
No. 1
No. 3
No. 2
Fig 1: Checking For Continuity Between Following Terminals Of Climate Control Unit Connector A (40P) And Humidity/In-Car Temperature Sensor 4P ConnectorCourtesy of AMERICAN HONDA MOTOR CO., INC.
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 (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ).
NO -Repair an open in the wire(s) between the climate control unit and the humidity sensor.