Nissan Pathfinder (2005 year). Instruction — part 362

HEATER & COOLING UNIT ASSEMBLY

MTC-87

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MTC

2005 Pathfinder

4.

Remove the RH heater core pipes nut.

5.

Disconnect the heater core hoses from the heater core.

6.

Disconnect the high- and low-pressure A/C pipes from the
expansion valve.

7.

Move the two front seats to the rearmost position on the seat
track.

8.

Remove the instrument panel and console panel. Refer to

IP-10,

"Removal and Installation"

.

9.

Remove the two front floor ducts.

10. Remove the steering column. Refer to

PS-10, "Removal and

Installation"

.

11. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse

block (SMJ) electrical connectors. Refer to

PG-39, "Harness Layout"

.

12. Remove the covers then remove the three steering member bolts from each side to disconnect the steer-

ing member from the vehicle body.

13. Remove the heater and cooling unit assembly with it attached to the steering member, from the vehicle.

CAUTION:

●

Use care not to damage the seats and interior trim panels when removing the heater and cooling
unit assembly with it attached to the steering member.

●

Use suitable plugs on the heater core pipes to prevent coolant leakage.

14. Remove the heater and cooling unit assembly from the steering member.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

●

Replace the O-ring of the low-pressure A/C pipe and high-pressure A/C pipe with a new one, and
apply compressor oil to the O-ring for installation. Refer to

MTC-99, "Components"

.

●

After charging the refrigerant, check for leaks. Refer to

ATC-167, "Checking for Refrigerant Leaks"

.

NOTE:

●

Fill the engine cooling system with the specified coolant mixture. Refer to

MA-14, "REFILLING ENGINE

COOLANT"

.

●

Recharge the A/C system. Refer to

ATC-151, "Evacuating System and Charging Refrigerant"

.

WJIA1292E

MTC-88

HEATER CORE

2005 Pathfinder

HEATER CORE

PFP:27140

Components

EJS003VW

Heater and Cooling Unit Assembly

Removal and Installation

EJS003VX

REMOVAL

1.

Remove the heater and cooling unit assembly. Refer to

MTC-86, "HEATER & COOLING UNIT ASSEM-

BLY"

.

2.

Remove the three screws and remove the heater core cover.

3.

Remove the heater core and evaporator pipe bracket.

4.

Remove the heater core.
NOTE:
If the in-cabin microfilters are contaminated from coolant leaking
from the heater core, replace the in-cabin microfilters with new
ones before installing the new heater core.

INSTALLATION

Installation is in the reverse order of removal.

LJIA0167E

1.

Heater core and evaporator pipe bracket 2.

Heater core

3.

Heater and cooling unit assembly

4.

Heater core cover

LJIA0134E

INTAKE DOOR MOTOR

MTC-89

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MTC

2005 Pathfinder

INTAKE DOOR MOTOR

PFP:27730

Removal and Installation

EJS003VY

Intake Door Motor - Heater and Cooling Unit Assembly

REMOVAL

1.

Remove the heater and cooling unit assembly. Refer to

MTC-86, "HEATER & COOLING UNIT ASSEM-

BLY"

.

2.

Remove the steering member from the heater and cooling unit assembly.

3.

Disconnect the intake door motor electrical connector.

4.

Remove the three screws and remove the intake door motor.

INSTALLATION

Installation is in the reverse order of removal.

WJIA1312E

1.

Heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor

4.

Blower motor resistor

5.

Mode door motor

MTC-90

MODE DOOR MOTOR

2005 Pathfinder

MODE DOOR MOTOR

PFP:27731

Removal and Installation

EJS003VZ

Mode Door Motor - Heater and Cooling Unit Assembly

REMOVAL

1.

Remove the instrument panel side finisher. Refer to

IP-10, "INSTRUMENT PANEL ASSEMBLY"

.

2.

Remove the lower instrument cover. Refer to

IP-10, "INSTRUMENT PANEL ASSEMBLY"

.

3.

Disconnect the mode door motor electrical connector.

4.

Remove the three screws and remove the mode door motor.

INSTALLATION

Installation is in the reverse order of removal.

WJIA1312E

1.

Heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor

4.

Blower motor resistor

5.

Mode door motor

AIR MIX DOOR MOTOR

MTC-91

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MTC

2005 Pathfinder

AIR MIX DOOR MOTOR

PFP:27732

Components

EJS003W0

Air Mix Door Motor - Heater and Cooling Unit Assembly

Removal and Installation

EJS003W1

REMOVAL

1.

Remove the heater and cooling unit assembly. Refer to

MTC-86, "HEATER & COOLING UNIT ASSEM-

BLY"

.

2.

Remove the steering member from the heater and cooling unit assembly.

3.

Disconnect the air mix door motor electrical connector.

4.

Remove the three screws and remove the air mix door motor.

INSTALLATION

Installation is in the reverse order of removal.

WJIA1312E

1.

Heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor

4.

Blower motor resistor

5.

Mode door motor

MTC-92

FRONT BLOWER MOTOR RESISTOR

2005 Pathfinder

FRONT BLOWER MOTOR RESISTOR

PFP:27077

Removal and Installation

EJS003W2

Blower Motor Resistor - Heater and Cooling Unit Assembly

REMOVAL

1.

Disconnect the blower motor resistor electrical connector.

2.

Remove the two screws and remove the blower motor resistor.

INSTALLATION

Installation is in the reverse order of removal.

WJIA1312E

1.

Heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor

4.

Blower motor resistor

5.

Mode door motor

DUCTS AND GRILLES

MTC-93

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MTC

2005 Pathfinder

DUCTS AND GRILLES

PFP:27860

Components

EJS003W3

Ducts

LJIA0155E

MTC-94

DUCTS AND GRILLES

2005 Pathfinder

Grilles

Removal and Installation

EJS003W4

CONSOLE DUCTS AND CONSOLE GRILLE
Removal

The center console must be removed and disassembled to remove the console ducts and the console grille.
Refer to

IP-15, "CENTER CONSOLE"

.

Installation

Installation is in the reverse order of removal.

1.

Defroster nozzle

2.

LH side demister duct

3.

LH ventilator duct

4.

RH side demister duct

5.

RH ventilator duct

6.

Center ventilator duct

7.

Front heater and cooling unit assembly

8.

Floor connector duct grilles

9.

Floor connector duct

10. Front floor ducts

11.

Floor floor ducts

12. Rear console duct

13. Center console duct

14. Front console duct

WJIA1424E

1.

Instrument panel

2.

LH side ventilator grille

3.

LH ventilator grille

4.

RH ventilator grille

5.

RH side ventilator grille

6.

Console body rear

7.

Rear console finisher

8.

Console grille

9.

RH side demister grille