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	4.05
   2	5.24
   3	6,44
   4	7,63
   5	8,82
   6	10.02
   7	11.21
   8	13.60

Diagnosis Using GDS

1. 1
   The heating, ventilation and air conditioning system can quickly diagnose faulty components using the Generic Diagnostic System (GDS). The diagnostic system (GDS) provides the following information: (1) Self-diagnosis: Diagnostic Trouble Code (DTC) check and display. (2) Current data: Checking the input/output status of the system. (3) Actuation test: Checking 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 hood side trim. (Refer to Body - "Hood Side Trim")
3. 3
   To remove the protective cover under the [RH] cover (A), press both sides of the stopper pin, then pull it downward.

   

4. 4
   Disconnect the under lamp connector (A).

   

5. 5
   Remove the passenger side air vent duct (A) after loosening the screw.

   

6. 6
   Disconnect the power MOSFET connector (A), then remove the power MOSFET (B) after loosening the mounting screws.

   

7. 7
   Install in the reverse order of removal.