Rear Window Defogger Switch Repair Procedures

Inspection

1. 1
   In the electrical system, malfunctions can be quickly diagnosed using the Global Diagnostic System (GDS).

   1. Self-Diagnosis: Checks malfunction and Diagnostic Trouble Code (DTC)
   2. Current Data: Check the system input/output status.
   3. Actuation Test: Check the system operating status
   4. Additional Functions: Controls other functions, including system parameter setting 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 "Smart Junction Block (SJB)" to check the windshield de-icer.
4. 4
   Select the "Current Data" menu to check the current status of inputs/outputs. Inputs/outputs for sensors related to the Smart Junction Block (SJB) can be checked.

   

5. 5
   Select "Actuation Test" to forcibly check the operation of the Smart Junction Block (SJB) data.

   

Removal

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the heater and air conditioning control unit. (Refer to Heating, Ventilation, Air Conditioning - "Heater and A/C Control Unit (Dual)")

Installation

1. 1
   Install the heater and A/C control unit.
2. 2
   Connect the negative (-) battery terminal.