Control Module HVAC: Service and Repair

PULSE WIDTH MODULATOR

Removal




1. Lower glove compartment door to gain access to the A/C blower motor mounting area.
2. Remove electrical connector(s) from the Pulse Width Modulated (PWM) A/C blower motor speed control.
3. Remove three retaining screws from the A/C blower motor speed control brackets and remove the A/C blower motor speed control.

CAUTION: Do not touch the fins of the controller heat sink until it has had sufficient time to cool.

4. Remove mounting brackets from A/C blower motor speed control.

Installation
1. Install mounting brackets to A/C blower motor speed control.
2. Align the A/C blower motor speed control with the pins on the A/C evaporator housing.
3. Retain the controller bracket with three screws.
4. Install electrical connectors into the A/C blower motor speed control.
5. Close glove compartment door.