Component Inspection

Component Inspection

Check Auto Defog actuator
1. Ignition "OFF"
2. Disconnect Auto Defog actuator and A/C control unit main harness connector.
3. Connect (+) terminal of battery to OPEN (+) of Auto Defog actuator and (-) terminal to CLOSE (-). (Component side)
4. Verify that the Auto Defog actuator operates to the OPEN position.
5. Verify that the Auto Defog actuator operates to the OPEN position with reverse connecting. (OPEN (+) and CLOSE (-) ). (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 Auto Defog actuator and A/C control unit main harness connector.
3. Ignition "ON"
4. Measure voltage between Signal (F/B) terminal of Auto Defog 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 Auto Defog actuator as a function of position of mode switch.
5. Is "voltage" display near the specified value ?