Auto Defog Actuator Repair Procedures

Inspection

1. 1
   Turn the ignition off.
2. 2
   Disconnect the auto defog actuator connector.
3. 3
   Check that the defogger actuator operates to the open position when 12 V is applied to terminal 3 and terminal 4 is grounded. Check that the defogger actuator operates to the closed position when the connections are reversed.

   

   Pin No.	Function
   1	-
   2	-
   3	Open
   4	Sensor (+5V)
   5	Feedback Signal
   6	Sensor Ground
   7	Off

4. 4
   Connect the defogger actuator connector.
5. 5
   Turn the ignition on.
6. 6
   Check the voltage between terminals 6 and 5.
7. 7
   If the measured voltage does not meet the specification, check the operation by replacing the existing defogger actuator with a new genuine part. Then determine whether replacement of the defogger actuator is required or not.

Diagnosis Using GDS

1. 1
   The Heating, Ventilation and Air Conditioning (HVAC) system can quickly diagnose faulty parts using the Global Diagnostic System (GDS).
   The Diagnostic System (GDS) provides the following information. (1) Self-diagnosis: Check the Diagnostic Trouble Code (DTC) and display. (2) Current data: Check the input/output status of the system. (3) Actuation test: Check the operating status of the system. (4) Additional functions: Other controls such as system option and zero point adjustment.
2. 2
   Select "Vehicle Model" and the system to be checked to inspect the vehicle with the tester.
3. 3
   Select the "Current Data" menu to check the current status of the input/output data. The input/output data for the sensors related to the defogger actuator can be checked.

   

4. 4
   To perform a forced operation based on the input factors of the defogger actuator, select "ACTUATION TEST".

   

Replacement

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the driver airbag module assembly. (Refer to Body - "Driver Airbag Module Assembly")
3. 3
   Disconnect the connector (A), then remove the defogger actuator (B) after loosening the mounting screws.

   

4. 4
   To install, reverse the removal procedure.