Rear Window Defogger Switch

Repair Procedures

Diagnosis using a scan tool

1. 1
   The electrical system malfunctions can be quickly diagnosed using the vehicle diagnostic system (Diagnostic tool). The diagnostic system (diagnostic tool) provides the following information.

   1. DTC Search: Check malfunction and diagnostic trouble code (DTC)
   2. Data Analysis: Check the input/output data status of the system
   3. Actuation Test: Check the system operating status
   4. S/W Management: Control other functions, including system parameter setting and zero point adjustment
2. 2
   To diagnose the vehicle using the diagnostic tool, select "DTC Analysis" and "Vehicle".

   

3. 3
   Select "Data Analysis" and "Vehicle Model".

   

4. 4
   Select "IBU_BCM" to view the current input/output data.

   

   

5. 5
   To forcibly activate the input value of the module under test, select the "Activation Test" option.

   

Removal

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the audio unit or AVN head unit. (Refer to "Audio" – "Audio Unit") (Refer to AVN System – "AVN Head Unit")
3. 3
   Remove the heater and air conditioning control unit. (Refer to "Heating, Ventilation, Air Conditioning" – "Heater and Air Conditioning Control"). Unit (Manual)") (Refer to "Heating, Ventilation, Air Conditioning" – "Heater and Air Conditioning Control"). Unit (DATC)")

Installation

1. 1
   Install the heater and A/C control unit.
2. 2
   Install the audio unit or AVN head unit.
3. 3
   Connect the negative (-) battery terminal.