Nissan Pathfinder (2012 year). Instruction — part 610

EVAPORATOR

VTL-23

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REMOVAL

1. Remove the rear heater and cooling unit assembly from the vehicle. Refer to

VTL-18, "Removal and

Installation"

.

2. Remove the rear blower motor.
3. Remove the variable blower control (rear).
4. Remove the rear air mix door motor.
5. Remove the rear duct and blend door assembly. Refer to

VTL-

34, "Removal and Installation"

.

6. Disassemble the rear heater and cooling unit assembly to

remove the rear evaporator.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Do not reuse O-rings.

• Apply A/C oil to the O-rings on the rear high- and low-pressure A/C pipes for installation.

• After charging refrigerant, check for leaks.

WJIA1134E

August 2012

2012 Pathfinder

VTL-24

< REMOVAL AND INSTALLATION >

EXPANSION VALVE

EXPANSION VALVE

Removal and Installation for Rear Expansion Valve

INFOID:0000000007356282

REMOVAL

1. Discharge the refrigerant. Refer to

HA-36, "HFC-134a (R-134a) Service Procedure"

.

2. Reposition the third row seat out of the way.
3. Remove the luggage side lower finisher RH access door.
4. Disconnect the rear high- and low-pressure A/C pipes from the rear expansion valve.

CAUTION:

Cap or wrap the A/C refrigerant pipe ends with a suitable material such as vinyl tape to avoid the

entry of air and contaminants.

5. Remove the expansion valve.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Do not reuse O-rings.

• Apply A/C oil to the O-rings on the rear expansion valve and the rear high- and low-pressure A/C

pipes for installation.

• After charging refrigerant, check for leaks.

Expansion valve bolts

: Refer to

HA-34, "Component"

.

A/C refrigerant pipe to expansion valve bolt

: Refer to

HA-34, "Component"

.

August 2012

2012 Pathfinder

HEATER CORE

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HEATER CORE

Component

INFOID:0000000007356283

Front Heater and Cooling Unit Assembly

Rear Heater and Cooling Unit Assembly

AWIIA1478ZZ

1.

Front heater core and evaporator pipe
bracket

2.

Front heater core

3.

Front heater and cooling unit assembly

4.

Front heater core cover

LJIA0168E

1.

Rear heater and cooling unit assembly

2.

Rear blower motor

3.

Rear heater core bracket

4.

Rear heater core

August 2012

2012 Pathfinder

VTL-26

< REMOVAL AND INSTALLATION >

HEATER CORE

Removal and Installation

INFOID:0000000007356284

FRONT HEATER CORE

Removal

1. Remove the front heater and cooling unit assembly. Refer to

VTL-18, "Removal and Installation"

.

2. Remove the screws and the front heater core cover.
3. Remove the front heater core and evaporator pipe bracket.
4. Remove the front heater core.

NOTE:

If the in-cabin microfilters are contaminated from coolant leaking from the front heater core, replace the in-

cabin microfilters with new ones before installing the new front heater core.

Installation

Installation is in the reverse order of removal.

REAR HEATER CORE

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

Removal

1. Partially drain the engine cooling system. Refer to

CO-12, "Changing Engine Coolant"

(VQ40DE),

CO-42,

"Changing Engine Coolant"

(VK56DE).

2. Remove the rear heater and cooling unit assembly. Refer to

VTL-18, "Removal and Installation"

.

3. Remove the rear heater core bracket.
4. Remove the heater core.

Installation

Installation is in the reverse order of removal.

August 2012

2012 Pathfinder

INTAKE DOOR MOTOR

VTL-27

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INTAKE DOOR MOTOR

Removal and Installation

INFOID:0000000007356285

Intake Door Motor - Front Heater and Cooling Unit Assembly

REMOVAL

1. Remove the front heater and cooling unit assembly. Refer to

VTL-18, "Removal and Installation"

.

2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the intake door motor electrical connector.
4. Remove the 3 screws and the intake door motor.

INSTALLATION

Installation is in the reverse order of removal.

LBIA0415E

1.

Front heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor (passenger)

4.

Variable blower control (front)

5.

Air mix door motor (driver)

6.

Mode door motor

August 2012

2012 Pathfinder

VTL-28

< REMOVAL AND INSTALLATION >

MODE DOOR MOTOR

MODE DOOR MOTOR

Removal and Installation

INFOID:0000000007356286

Mode Door Motor - Front Heater and Cooling Unit Assembly

REMOVAL

1. Remove the BCM. Refer to

BCS-53, "Removal and Installation"

.

2. Disconnect the mode door motor electrical connector.
3. Remove the 3 screws and the mode door motor.

INSTALLATION

Installation is in the reverse order of removal.

LBIA0415E

1.

Front heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor (passenger)

4.

Variable blower control (front)

5.

Air mix door motor (driver)

6.

Mode door motor

August 2012

2012 Pathfinder

AIR MIX DOOR MOTOR

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AIR MIX DOOR MOTOR

Component

INFOID:0000000007356287

Air Mix Door Motors - ATC - Front Heater and Cooling Unit Assembly

LBIA0415E

1.

Front heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor (passenger)

4.

Variable blower control (front)

5.

Air mix door motor (driver)

6.

Mode door motor

August 2012

2012 Pathfinder

VTL-30

< REMOVAL AND INSTALLATION >

AIR MIX DOOR MOTOR

Air Mix Door Motor - MTC - Heater and Cooling Unit Assembly

Removal and Installation

INFOID:0000000007356288

FRONT AIR MIX DOOR MOTOR - DRIVER - ATC

Removal

1. Remove the lower dash side finisher. Refer to

INT-19, "Removal and Installation"

.

2. Remove the instrument lower panel RH and lower glove box. Refer to

IP-20, "Removal and Installation"

.

3. Disconnect the air mix door motor harness connector.
4. Remove the three screws and the air mix door motor.

Installation

Installation is in the reverse order of removal.

FRONT AIR MIX DOOR MOTOR - PASSENGER - ATC

Removal

1. Remove the front heater and cooling unit assembly. Refer to

VTL-18, "Removal and Installation"

.

2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the air mix door motor electrical connector.
4. Remove the three screws and the air mix door motor.

Installation

Installation is in the reverse order of removal.

FRONT AIR MIX DOOR MOTOR - MTC

Removal

1. Remove the front heater and cooling unit assembly. Refer to

VTL-18, "Removal and Installation"

.

2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the air mix door motor electrical connector.

WJIA1312E

1.

Heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor

4.

Blower motor resistor

5.

Mode door motor

August 2012

2012 Pathfinder