Dodge Durango

 Service Manual

Heating and Air Conditioning » Removal and installation
Blower motor resistor

FRONT

REMOVAL

(1) Disconnect and isolate the battery negative cable.

(2) Remove the cowl plenum cover/grille panel from the cowl top. See Vacuum Reservoir in the Removal and Installation section of this group for the procedures.

(3) Reach through the cowl plenum access hole (Fig. 21) to remove the two hex screws that secure the front blower motor resistor to the cowl plenum panel.

Fig. 21 Blower Motor Resistor Remove/Install

1 - WINDSHIELD

2 - RIGHT WIPER PIVOT

3 - COWL PLENUM ACCESS HOLE

(4) Pull the front blower motor resistor and its wire harness out of the plenum panel and through the cowl plenum access hole far enough to access the wire harness connector.

(5) Unplug the front blower motor resistor from the wire harness connector.

(6) Remove the front blower motor resistor from the cowl plenum.

INSTALLATION

(1) Plug the front blower motor resistor into the wire harness connector.

(2) Install the front blower motor resistor to the cowl plenum panel by feeding the resistor and wire harness back through the cowl plenum access hole.

(3) Install and tighten the two screws that secure the front blower motor resistor to the cowl plenum panel. Tighten the mounting screws to 2.2 N*m (20 in. lbs.).

(4) Reinstall the cowl plenum cover/grille panel to the cowl top. See Vacuum Reservoir in the Removal and Installation section of this group for the procedures.

(5) Connect the battery negative cable.

REAR

The rear blower motor resistor is used only on models with the optional rear overhead A/C unit.

REMOVAL

(1) Disconnect and isolate the battery negative cable.

(2) Remove the headliner from the passenger compartment of the vehicle. Refer to Group 23 - Body for the procedures.

(3) Disconnect the B-pillar drain hoses from the wye fittings on each side of the rear overhead A/C unit (Fig. 22).

Fig. 22 Rear Overhead A/C Drain Hose Remove/ Install

1 - REAR OVERHEAD A/C UNIT

2 - WYE FITTING

3 - CLIP

4 - GROMMET

5 - DRAIN HOSE

(4) Remove the nine screws that secure the lower housing cover to the rear overhead A/C unit.

(5) Release the lower housing cover snap retainer near the center of the outlet side (rear) of the rear overhead A/C unit (Fig. 23).

Fig. 23 Rear Overhead A/C Unit Lower Housing Cover Remove/Install

1 - REAR OVERHEAD A/C UNIT LOWER HOUSING COVER

2 - SNAP RETAINER

3 - OUTLET SIDE

4 - BLOWER MOTOR SWITCH WIRE HARNESS CONNECTOR

5 - INLET SIDE

6 - DRAIN HOSES

(6) Feed the rear blower motor switch wire harness and connector through the hole in the right end of the rear overhead A/C unit lower housing cover while removing the cover from the unit.

(7) Disengage the rear blower motor resistor wire harness connector retainer from the mounting hole in the right rear corner of the rear overhead A/C unit upper housing cover (Fig. 24).

Fig. 24 Rear Blower Motor Resistor Remove/Install

1 - WIRE HARNESS CONNECTOR

2 - RETAINER

3 - MOUNTING HOLE

4 - RESISTOR

5 - SCREW

(8) Unplug the rear blower motor resistor wire harness connector.

(9) Remove the screw that secures the rear blower motor resistor bracket to the rear overhead A/C unit upper housing cover.

(10) Remove the rear blower motor resistor and bracket as a unit from the rear overhead A/C unit.

INSTALLATION

(1) Position the rear blower motor resistor and bracket in the right rear corner of the rear overhead A/C unit upper housing cover and secure it with the mounting screw. Tighten the mounting screw to 2.2 N*m (20 in. lbs.).

(2) Plug in the rear blower motor resistor wire harness connector.

(3) Engage the rear blower motor resistor wire harness connector retainer to the mounting hole in the right rear corner of the rear overhead A/C unit upper housing cover.

(4) Feed the rear blower motor switch wire harness and connector through the hole in the right end of the rear overhead A/C unit lower housing cover while positioning the cover to the unit.

(5) Be certain that the lower housing cover snap retainer near the center of the outlet side (rear) of the rear overhead A/C unit is engaged.

(6) Install the nine screws that secure the lower housing cover to the rear overhead A/C unit. Tighten the mounting screws to 2.2 N*m (20 in. lbs.).

(7) Connect the B-pillar drain hoses to the wye fittings on each side of the rear overhead A/C unit.

(8) Reinstall the headliner to the passenger compartment of the vehicle. Refer to Group 23 - Body for the procedures.

(9) Connect the battery negative cable.

Service warnings and precautions

B-pillar refrigerant line

Blower motor

Blower motor relay

Blower motor resistor

Compressor

Compressor clutch

Compressor clutch relay

Condenser

Ducts and outlets

Electronic cycling clutch switch

Evaporator coil

Expansion valve

Filter-drier

Heater-a/c control

Heater-a/c housing

Heater-a/c housing door

Heater core

High pressure cut-off switch

Liquid line

Low pressure cut-off switch

Mode door vacuum actuator

Rear blower motor switch

Rear overhead a/c unit

Refrigerant line coupler

Suction and discharge line

Suction line jumper

Temperature control cable

Underbody refrigerant line

Vacuum check valve

Vacuum reservoir