Nissan Pathfinder (2010 year). Instruction — part 646
VARIABLE BLOWER CONTROL
VTL-15
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Removal
1. Disconnect the variable blower control (front) electrical connector.
2. Remove the two screws and remove the variable blower control (front).
Installation
Installation is in the reverse order of removal.
REAR VARIABLE BLOWER CONTROL
Removal
1. Remove the rear heater and cooling unit assembly. Refer to
VTL-18, "Removal and Installation"
2. Disconnect the variable blower control (rear) electrical connector.
3. Remove the two screws and remove the variable blower control (rear).
Installation
Installation is in the reverse order of removal.
2010 Pathfinder
VTL-16
< ON-VEHICLE REPAIR >
FRONT BLOWER MOTOR RESISTOR
FRONT BLOWER MOTOR RESISTOR
Removal and Installation
INFOID:0000000005259231
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
2010 Pathfinder
HEATER & COOLING UNIT ASSEMBLY
VTL-17
< ON-VEHICLE REPAIR >
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HEATER & COOLING UNIT ASSEMBLY
Component
INFOID:0000000005259232
Front Heater and Cooling Unit Assembly
WJIA1402E
1.
Front high-pressure A/C pipe
2.
Front low-pressure A/C pipe
3.
Front expansion valve
4.
Front heater core and evaporator
pipes grommet
5.
Front A/C drain hose grommet 6.
Front A/C drain hose
7.
Front heater core pipe mounts
8.
Front heater core pipes
9.
Front heater and cooling unit assembly
2010 Pathfinder
VTL-18
< ON-VEHICLE REPAIR >
HEATER & COOLING UNIT ASSEMBLY
Rear Heater and Cooling Unit Assembly
Removal and Installation
INFOID:0000000005259233
FRONT HEATER AND COOLING UNIT ASSEMBLY
Removal
1. Discharge the refrigerant from the A/C system. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
2. Drain the coolant from the engine cooling system. Refer to
CO-12, "Changing Engine Coolant"
(VQ40DE),
CO-40, "Changing Engine Coolant"
(VK56DE).
3. Move the two front seats to the rearmost position on the seat track.
4. Disconnect the battery negative and positive terminals.
WJIA1403E
1.
Rear high- and low-pressure A/C pipes
2.
Rear heater core hoses
3.
Rear high- and low-pressure A/C pipes
cover
4.
Underfloor rear high- and low-pressure A/C
and heater core pipes
5.
Rear expansion valve
6.
Rear heater and cooling unit assembly
2010 Pathfinder
HEATER & COOLING UNIT ASSEMBLY
VTL-19
< ON-VEHICLE REPAIR >
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5. Remove the front heater core pipes RH nut.
6. Disconnect the front heater core hoses from the front heater
core.
7. Disconnect the high- and low-pressure A/C pipes from the front
expansion valve.
8. Remove the instrument panel and center console. Refer to
12, "Removal and Installation"
9. Remove the two front floor ducts.
10. Remove the steering column. Refer to
.
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
.
12. Remove the covers then remove the three steering member bolts from each side to disconnect the steer-
ing member from the vehicle body. Refer to
.
13. Remove the front heater and cooling unit assembly with it attached to the steering member, from the vehi-
cle.
CAUTION:
• Use care not to damage the seats and interior trim panels when removing the front 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 front 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
.
• After charging the refrigerant, check for leaks. Refer to
HA-29, "Checking of Refrigerant Leaks"
NOTE:
• Fill the engine cooling system with the specified coolant mixture. Refer to
(VQ40DE),
CO-40, "Changing Engine Coolant"
• Recharge the A/C system. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
.
REAR HEATER AND COOLING UNIT ASSEMBLY
Removal
1. Discharge the refrigerant from the A/C system. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
2. Drain the coolant from the engine cooling system. Refer to
CO-12, "Changing Engine Coolant"
(VQ40DE),
CO-40, "Changing Engine Coolant"
3. Remove the luggage side lower and upper finisher RH. Refer to
INT-22, "Removal and Installation"
4. Disconnect the rear heater core hoses from the rear heater core.
5. Disconnect the rear A/C high- and low-pressure A/C pipes from the rear expansion valve.
6. Disconnect the following electrical connectors:
• Rear blower motor
• Rear variable blower control (rear)
• Rear air mix door motor
7. Disconnect the ducts from the rear heater and cooling unit assembly.
8. Remove the three bolts to remove the rear heater and cooling unit assembly.
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
.
• After charging the refrigerant, check for leaks. Refer to
HA-29, "Checking of Refrigerant Leaks"
NOTE:
LJIA0165E
2010 Pathfinder
VTL-20
< ON-VEHICLE REPAIR >
HEATER & COOLING UNIT ASSEMBLY
• Fill the engine cooling system with the specified coolant mixture. Refer to
(VQ40DE),
CO-40, "Changing Engine Coolant"
• Recharge the A/C system. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
.
2010 Pathfinder
EVAPORATOR
VTL-21
< ON-VEHICLE REPAIR >
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EVAPORATOR
Removal and Installation for Front Evaporator
INFOID:0000000005259234
Front Heater and Cooling Unit Assembly
REMOVAL
LJIA0178E
1.
Center ventilator connector duct
2.
Front heater core cover
3.
Intake air case
4.
Front heater core and evaporator
pipes bracket
5.
Front heater core and evaporator
pipes grommet
6.
Front heater core
7.
Upper heater and cooling unit case
8.
Front expansion valve
9.
Front evaporator
10. Lower heater and cooling unit case
11. Variable blower control (front)
12. Blower motor
2010 Pathfinder
VTL-22
< ON-VEHICLE REPAIR >
EVAPORATOR
1. Remove the front heater core. Refer to
VTL-26, "Removal and Installation"
.
2. Separate the heater and cooling unit case.
3. Remove the front evaporator.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Replace the O-rings on the front A/C low-pressure flexible A/C hose and the front high-pressure A/C
pipe with new ones. Apply compressor oil to the O-rings for installation.
Removal and Installation for Rear Evaporator
INFOID:0000000005259235
Rear Heater and Cooling Unit Assembly
REMOVAL
AWIIA0647ZZ
1.
Front cover
2.
Rear evaporator and heater core case
3.
Rear evaporator
4.
Side cover
5.
Rear heater core
6.
Rear blower motor
7.
Blower motor case
8.
Variable blower control (rear)
Front
2010 Pathfinder
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