8619618

1.

Ignition "OFF"

2.

Disconnect Auto Defog actuator and A/C control Module 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 CLOSE position with reverse connecting.( CLOSE(+) and OPEN(-) ). (Component side)

Specification : Refer the specifications in Fig.1)

Fig.1)

Actuator harness	OPEN(+)	CLOSE(-)	Door position
Battery terminal	12 V	ground	OPEN
Battery terminal	ground	12 V	CLOSE

Fig.1) ※ Function of the actuator motor according to terminal connection type. (observe safety regulations)

6.

Is "Door position" display near the specified value?

	▶ Go to "Check potentiometer" procedure.
	▶ Substitute with a known-good Auto Defog actuator and check for proper operation. If the problem is corrected, replace Auto Defog actuator and then go to "Verification of Vehicle Repair" procedure.

7.

Ignition "OFF"

8.

Connect Auto Defog actuator and A/C control Module main harness connector.

9.

Ignition "ON"

10.

Measure voltage between Signal(F/B) terminal of Auto Defog actuator harness connector and Sensor ground(-) terminal of A/C control Module harness connector .(Component side)

Specification : Refer the specifications in Fig.2)

Fig.2)

Door position	Voltage
Door position	Deactivation Defog	Activation Defog
VENT	below 4.55V	About 3.5
B/L	below 4.55V	About 3.5
FLOOR	below 4.0V	About 3.5
MIX	below 3.5V	About 3.5
DEF	About 2.1	About 2.1

Fig.2) ※ Voltage value of Auto Defog actuator as a function of position of mode switch.

11.

Is "voltage" display near the specified value?

	▶ Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
	▶ Substitute with a known-good Auto Defog actuator and check for proper operation. If the problem is corrected, replace Auto Defog actuator and then go to "Verification of Vehicle Repair" procedure.