DTC B2967 or DTC indicator N and AUTO: 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 CLIMATE CONTROL UNIT SELF-DIAGNOSTIC FUNCTION WITHOUT THE HDS ).
- Check for DTCs.
Is DTC B2967 or N and AUTO indicated?
YES -Go to step 5.
NO -Intermittent failure. Check for loose wires or poor connections on 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 connectors A (28P) and B (16P).
- Check for continuity between the following terminals of climate control unit connectors A (28P), B(16P)and the humidity/in-car temperature sensor 4P connector.CONTINUITY REFERENCE
28P: 4P: No. 13 No. 2 No. 25 No. 4 Fig 1: Checking Continuity Between Terminals Of Climate Control Unit And Humidity/In-Car Temperature Sensor ConnectorCourtesy of AMERICAN HONDA MOTOR CO., INC.
CONTINUITY REFERENCE16P: 4P: No. 4 No. 3 Is there continuity?
YES -Check for loose wires or poor connections at climate control unit connectors A (28P), 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 (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ).
NO -Repair an open in the wire(s) between the climate control unit and the humidity sensor.