Power MOSFET Repair Procedures

Inspection

1. 1
   Turn the ignition on.
2. 2
   Manually operate the control switch and measure the blower motor voltage.
3. 3
   Select the control switch to raise the voltage to high speed.

   

   Specification

   Blower Speed (Manual)	Motor Voltage (V)
   1	3.4 ± 0.5 (A/C OFF) 3.8 ± 0.5 (A/C ON)
   2	5.1 V
   3	6.3 V
   4	7.6 V
   5	8.8 V
   6	10.1 V
   7	11.3 V
   8	Battery

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 Power MOSFET can be checked.

   

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

   

Replacement

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the center airbag panel. (Refer to Body - "Center Airbag Panel")
3. 3
   Remove the passenger side air vent duct (A) after loosening the screw.

   

4. 4
   Disconnect the power MOSFET connector (A), then remove the power MOSFET (B) after loosening the mounting screws.

   

5. 5
   To install, reverse the removal procedure.