Power Transistor HVAC: Service and Repair

Inspection

1. Ignition "ON"
2. Manually operate the control switch and measure the voltage of blower motor.
3. Select the control switch to raise voltage until high speed.










Replacement

1. Disconnect the negative (-) battery terminal.
2. Remove the main crash pad lower cover (A).




3. Disconnect the PWM blower module connector (A) and then remove the PWM blower module (B) after loosening the mounting screws.




4. Installation is the reverse order of removal.