Component Inspection

Component Inspection

Check passenger air mix actuator
1. Ignition "OFF"
2. Disconnect Driver air mix actuator and A/C control unit main harness connector.
3. Connect (+) terminal of battery to WARM (+) of Driver air mix actuator and (-) terminal to COOL (-). (Component side)
4. Verify that the temperature actuator operates to the cool position
5. Verify that the temperature actuator operates to the warm position with reverse connecting. (WARM (+) and COOL (-)). (Component side)

Specification : Refer the specifications in Fig.1)





Fig.1)





FIG.1) ** Function of the actuator motor according to terminal connection type. (observe safety regulations)
6. Is "Door position" display near the specified value?





Check potentiometer
1. Ignition "OFF"
2. Connect Driver air mix actuator and A/C control unit main harness connector.
3. Ignition "ON"
4. Measure voltage between Signal (F/B) terminal of Driver air mix actuator harness connector and Sensor ground (-) terminal of A/C-ECU harness connector. (Component side)

Specification : Refer the specifications in Fig.2)





Fig.2)





FIG.2) ** Voltage value of Air Mix potentiometer as a function of temp door position.
5. Is "voltage" display near the specified value?