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.

   

   1. - 2. - 3. DEF (Close) 4. Sensor (+5V)

   5. Feedback Signal 6. Sensor Ground 7. DEF (Open)

4. 4
   Connect the defogger actuator connector.
5. 5
   Turn the ignition on.
6. 6
   Check the voltage between terminals 6 and 5. Specification

   Door Position	Voltage (V)	Fault Detection
   Anti-Fog OFF (Close)	1,0 ± 0,15	Low voltage: 0.1 V or less
   Anti-Fog ON (Open)	4,7 ± 0,15	High voltage: 4.9 V or more

   
   It will report the current actuator position to the controls.
7. 7
   If the measured voltage does not meet the specification, replace the anti-fog actuator with a known good one and check for proper operation.
8. 8
   Replace the anti-fog actuator if it is determined to be faulty.

Replacement

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the main lower airbag unit. (Refer to Body - "Main Lower Airbag Assembly")
3. 3
   Disconnect the connector, then remove the anti-fog actuator (A) after loosening the mounting screws.

   

4. 4
   Install in the reverse order of removal.