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 ?