Dodge Durango (DN). Manual — part 194

(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. 18).

(6) Feed the rear blower motor switch wire har-

ness 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 wire harness

connector retainer from the mounting hole in the left
rear corner of the rear overhead A/C unit upper hous-
ing cover.

(8) Unplug the rear blower motor wire harness

connector (Fig. 19).

(9) Remove the four screws that secure the rear

blower motor, wheel and housing unit to the rear
overhead A/C unit upper housing cover.

(10) Lower the rear blower motor, wheel and hous-

ing unit far enough to access and disengage the rear
overhead A/C unit wire harness from each end of the
blower housing.

(11) Remove the rear blower motor, wheel and

housing unit from the rear overhead A/C unit.

INSTALLATION

(1) Position the rear blower motor, wheel and

housing unit to the rear overhead A/C unit, and start
the four mounting screws to hold it in position.

(2) Engage the rear overhead A/C unit wire har-

ness in the routing holes on each end of the blower
housing.

(3) Finish installing the four rear blower motor,

wheel and housing unit mounting screws. Tighten
the mounting screws to 3 N·m (27 in. lbs.).

(4) Plug in the rear blower motor wire harness

connector.

(5) Engage the rear blower motor wire harness

connector retainer in the mounting hole in the left
rear corner of the rear overhead A/C unit upper hous-
ing cover.

(6) Feed the rear blower motor switch wire har-

ness 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.

(7) 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.

(8) 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.).

(9) Connect the B-pillar drain hoses to the wye fit-

tings on each side of the rear overhead A/C unit.

(10) Reinstall the headliner to the passenger com-

partment of the vehicle. Refer to Group 23 - Body for
the procedures.

(11) Connect the battery negative cable.

BLOWER MOTOR RELAY

REMOVAL

The blower motor relay (Voltage Reduction Relay

or VRR) is mounted with a single screw directly to
the instrument panel’s structural plastic inside the
glove box opening, next to the left-side energy-ab-
sorbing bracket (Fig. 20).

(1) Disconnect and isolate the battery negative

cable.

(2) Roll down the glove box as described in the

Glove Box section of Instrument Panel Systems.

Fig. 18 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

Fig. 19 Rear Blower Motor and Wheel Remove/

Install

1 – WIRE HARNESS CONNECTORS
2 – BLOWER WHEEL AND HOUSING
3 – RESISTOR
4 – EVAPORATOR COIL
5 – BLOWER MOTOR
6 – SCREWS

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HEATING AND AIR CONDITIONING

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REMOVAL AND INSTALLATION (Continued)

(3) Using a short or 90 degree screwdriver, remove

the screw that secures the blower motor relay (VRR)
to the steel clip in the instrument panel plastic
flange.

(4) Maneuver the VRR into the glove box opening

far enough for access, and disengage the wiring har-
ness from the relay.

(5) Remove the relay through the glove box open-

ing.

INSTALLATION

(1) Position the relay into the instrument panel

inside the glove box opening.

(2) Align the VRR with the connector and engage

the wiring harness to the relay.

(3) Align the relay with the steel clip in the instru-

ment panel, and insert and tighten the single screw
to 2.2 N·m (20 in. lbs.).

(4) Roll up the glove box as described in the Glove

Box Installation section of Instrument Panel Sys-
tems.

(5) Reconnect the battery negative cable.

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.

(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 proce-
dures.

(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 com-

partment of the vehicle. Refer to Group 23 - Body for
the procedures.

Fig. 20 Blower Motor Relay (VRR) Location

1 – BLOWER MOTOR RESISTOR CONNECTOR
2 – BLOWER MOTOR RELAY
3 – BLOWER MOTOR CONNECTOR
4 – GLOVE BOX LAMP CONNECTOR

Fig. 21 Blower Motor Resistor Remove/Install

1 – WINDSHIELD
2 – RIGHT WIPER PIVOT
3 – COWL PLENUM ACCESS HOLE

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HEATING AND AIR CONDITIONING

24 - 35

REMOVAL AND INSTALLATION (Continued)

(3) Disconnect the B-pillar drain hoses from the

wye fittings on each side of the rear overhead A/C
unit (Fig. 22).

(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).

(6) Feed the rear blower motor switch wire har-

ness 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).

(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 har-

ness 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.

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

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

Fig. 24 Rear Blower Motor Resistor Remove/Install

1 – WIRE HARNESS CONNECTOR
2 – RETAINER
3 – MOUNTING HOLE
4 – RESISTOR
5 – SCREW

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HEATING AND AIR CONDITIONING

DN

REMOVAL AND INSTALLATION (Continued)

(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 fit-

tings on each side of the rear overhead A/C unit.

(8) Reinstall the headliner to the passenger com-

partment of the vehicle. Refer to Group 23 - Body for
the procedures.

(9) Connect the battery negative cable.

COMPRESSOR

The compressor may be removed and repositioned

without disconnecting the refrigerant lines or dis-
charging the refrigerant system. Discharging is not
necessary if servicing the compressor clutch or clutch
coil, the engine, the cylinder head, or the generator.

WARNING: REVIEW THE WARNINGS AND CAU-
TIONS IN THE GENERAL INFORMATION SECTION
NEAR THE FRONT OF THIS GROUP BEFORE PER-
FORMING THE FOLLOWING OPERATION.

REMOVAL

(1) Recover the refrigerant from the refrigerant

system. See Refrigerant Recovery in the Service Pro-
cedures section of this group.

(2) Disconnect and isolate the battery negative

cable.

(3) Remove the serpentine drive belt. Refer to

Group 7 - Cooling System for the procedures.

(4) Unplug the compressor clutch coil wire harness

connector.

(5) Remove the suction and discharge refrigerant

line manifold from the compressor. See Suction and
Discharge Line in the Removal and Installation sec-
tion of this group for the procedures. Install plugs in,
or tape over all of the opened refrigerant fittings.

(6) Remove the four screws that secure the com-

pressor to the mounting bracket (Fig. 25).

(7) Remove the compressor from the mounting

bracket.

Fig. 25 Compressor Remove/Install - Typical

1 – BRACKET
2 – COMPRESSOR
3 – SCREW & WASHER

4 – BRACE
5 – BOLT

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HEATING AND AIR CONDITIONING

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REMOVAL AND INSTALLATION (Continued)