MOTOR-BLOWER
DESCRIPTION
The rear blower motor (1) is a 12-volt, direct current (DC) motor mounted within a plastic housing with an integral wire connector (2) and squirrel cage-type blower wheel (3) that is secured to the blower motor shaft. Three integral mounting tabs (4) allow the rear blower motor to be secured to the outboard side of the rear HVAC housing.
The rear blower motor can be accessed for service by removing the HVAC housing.
OPERATION
The rear blower motor is used to control the velocity of air moving through the rear HVAC housing by spinning the blower wheel within the HVAC housing at the selected speed.
The rear blower motor will only operate when the ignition switch is in ON and the rear blower motor switch located in the front accessory switch panel is ON. The rear blower motor receives a battery feed through the rear blower motor relay located in the power distribution center (PDC), whenever the ignition switch is in ON (refer to 24 - HEATING & AIR CONDITIONING/DISTRIBUTION - FRONT/MOTOR-BLOWER - DIAGNOSIS AND TESTING for diagnosis and testing of the rear blower motor).
The rear blower motor and blower wheel are factory balanced and cannot be adjusted or repaired and must be replaced as an assembly if found inoperative or damaged.
REMOVAL
1. Remove the rear HVAC housing (1) and place it on a workbench (refer to 24 - HEATING & AIR CONDITIONING/DISTRIBUTION - REAR/HOUSING-HVAC - REMOVAL).
2. Disconnect the rear HVAC wire harness connector (4) from the rear blower motor (2).
3. Remove the three screws (3) that secure the rear blower motor to the rear HVAC housing and remove the blower motor.
INSTALLATION
1. Position the rear blower motor (2) into the rear HVAC housing (1).
2. Install the three screws (3) that secure the rear blower motor to the rear HVAC housing. Tighten the screws to 2 N·m (17 in. lbs.).
3. Connect the rear HVAC wire harness connector (4) to the rear blower motor.
4. Install the rear HVAC housing (refer to 24 - HEATING & AIR CONDITIONING/DISTRIBUTION - REAR/HOUSING-HVAC - INSTALLATION).