Nissan Pathfinder (2009 year). Manual — part 450
HA-54
< ON-VEHICLE REPAIR >
CONDENSER
CONDENSER
Removal and Installation for Condenser
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REMOVAL
1.
Discharge the refrigerant. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
.
2.
Remove the radiator. Refer to
CO-45, "Removal and Installation"
(VQ40DE).
CAUTION:
Be careful not to damage the core surface of the condenser and the radiator.
3.
Disconnect the front high-pressure flexible A/C hose and the front high-pressure A/C pipe from the con-
denser.
CAUTION:
Cap or wrap the joint of the pipes with suitable material such as vinyl tape to avoid the entry of air.
4.
Disconnect the refrigerant pressure sensor harness connector.
5.
Remove the refrigerant pressure sensor from the condenser.
6.
Lift the condenser out of the mounting grommets and remove
the condenser.
INSTALLATION
Installation is in the reverse order of removal.
Refer to
CAUTION:
• Replace the O-rings of the front high-pressure A/C pipe, refrigerant pressure sensor, and front high-
pressure flexible A/C hose with new ones, then apply compressor oil to them for installation.
• After charging refrigerant, check for leaks.
• Replace the mounting grommets as necessary.
LJIA0177E
2009 Pathfinder
REFRIGERANT PRESSURE SENSOR
HA-55
< ON-VEHICLE REPAIR >
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REFRIGERANT PRESSURE SENSOR
Removal and Installation for Refrigerant Pressure Sensor
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REMOVAL
1.
Discharge the refrigerant. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
.
2.
Disconnect the refrigerant pressure sensor harness connector
and remove the refrigerant pressure sensor from the condenser.
CAUTION:
Be careful not to damage the condenser fins.
INSTALLATION
Installation is in the reverse order of removal.
Refer to
CAUTION:
• Be careful not to damage the condenser fins.
• Replace the O-ring of the refrigerant pressure sensor with a new one, then apply compressor oil to it
for installation.
• After charging refrigerant, check for leaks.
LJIA0177E
2009 Pathfinder
HA-56
< ON-VEHICLE REPAIR >
EXPANSION VALVE
EXPANSION VALVE
Removal and Installation for Front Expansion Valve
INFOID:0000000003935727
REMOVAL
1.
Discharge the refrigerant. Refer to
HA-37, "HFC-134a (R-134a) Service Procedure"
.
2.
Remove the front heater and cooling unit assembly. Refer to
VTL-18, "Removal and Installation"
.
3.
Remove the front heater core and evaporator pipes grommet.
4.
Remove the front expansion valve.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-rings on then front expansion valve and the A/C refrigerant pipes with new ones, then
apply compressor oil to them for installation.
• After charging refrigerant, check for leaks.
Expansion valve bolts
: Refer to
A/C refrigerant pipe to expansion valve bolt
: Refer to
2009 Pathfinder
AMBIENT SENSOR
HA-57
< ON-VEHICLE REPAIR >
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AMBIENT SENSOR
Removal and Installation
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REMOVAL
1.
Remove the front grille. Refer to
EXT-18, "Removal and Installation"
2.
Disconnect the ambient sensor (1) electrical connector.
•
⇐
: Front
NOTE:
The ambient sensor is located behind the front grille, below the
hood latch.
3.
Release the ambient sensor (1) clip and then remove the ambi-
ent sensor (1).
INSTALLATION
Installation is in the reverse order of removal.
AWIIA0262ZZ
2009 Pathfinder
HA-58
< ON-VEHICLE REPAIR >
HEATER PUMP
HEATER PUMP
Removal and Installation
INFOID:0000000003935729
Heater Pump
NOTE:
Only the VQ40DE engine is equipped with a heater pump for the rear heater system.
REMOVAL
1.
Partially drain the engine cooling system. Refer to
CO-12, "Changing Engine Coolant"
2.
Disconnect the heater pump electrical connector.
3.
Disconnect the two heater hoses.
4.
Remove the heater pump from the bracket securing the heater pump to the cowl top.
CAUTION:
Do not disassemble the heater pump, replace the heater pump as an assembly.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• The heater pump rubber mount must be fully seated on the bracket.
• Do not disassemble the heater pump, replace the heater pump as an assembly.
LBIA0414E
1.
Cowl top
2.
Heater pump electrical connector
3.
Heater pump
4.
Heater hose and clamp
5.
Heater hose and clamp
2009 Pathfinder
SERVICE DATA AND SPECIFICATIONS (SDS)
HA-59
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Service Data and Specification (SDS)
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COMPRESSOR
OIL
REFRIGERANT
Make
ZEXEL VALEO CLIMATE CONTROL
Model
DKS-17D
Type
Swash plate
Displacement
175.5 cm
3
(10.7 in
3
) / revolution
Cylinder bore
×
stroke
30.5 mm (1.20 in) x 24.0 mm (0.94 in)
Direction of rotation
Clockwise (viewed from drive end)
Drive belt
Poly V
Name
NISSAN A/C System Oil Type S or equivalent
Capacity
With rear A/C
210 m
(7.1 US fl oz, 7.4 Imp fl oz)
Without rear A/C
190 m
(6.1 US fl oz, 6.3 Imp fl oz)
Type
HFC 134a (R-134a)
Capacity
With rear A/C
0.85
±
0.05 kg (1.87
±
0.11 lb)
Without rear A/C
0.70
±
0.05 kg (1.54
±
0.11 lb)
2009 Pathfinder
HAC-1
VENTILATION, HEATER & AIR CONDITIONER
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SECTION
HAC
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CONTENTS
HEATER & AIR CONDITIONING CONTROL SYSTEM
AUTOMATIC AIR CONDITIONER
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORKFLOW . . ..
How to Perform Trouble Diagnosis For Quick And
Accurate Repair . . . . . . . . . . . . . ....
INSPECTION AND ADJUSTMENT . . . . . .
Operational Check (Front) . . . . . . . . . .....
Operational Check (Rear) . . . . . . . . . .....
FUNCTION DIAGNOSIS . . . . . . . ...
FUNCTION INFORMATION . . . . . . . .
Component Part Location . . . . . . . . . .....
Symptom Table . . . . . . . . . . . . . ...
REFRIGERATION SYSTEM . . . . . . . ..
Refrigerant Cycle . . . . . . . . . . . . .
Refrigerant System Protection . . . . . . . .
AUTOMATIC AIR CONDITIONER SYSTEM . .
Control System Diagram . . . . . . . . . . .
Control System Description . . . . . . . . . .
Discharge Air Flow (Front) . . . . . . . . . ..
Switches And Their Control Function (Front) . . ..
Switches And Their Control Function (Rear) . . ...
DIAGNOSIS SYSTEM (HVAC) . . . . . . ..
CONSULT-III Function (HVAC) . . . . . . . ...
DIAGNOSIS SYSTEM (BCM) . . . . . . .
CONSULT-III Function (BCM - COMMON ITEM) .
CONSULT-III Function (BCM - AUTO AIR CON-
DITIONER) . . . . . . . . . . . . . . . ..
SELF-DIAGNOSIS FUNCTION . . . . . . ..
A/C Auto Amp. Self-Diagnosis . . . . . . . .
A/C and AV Switch Assembly Self-Diagnosis . . .
A/C System Self-Diagnosis Code Chart . . . . ..
COMPONENT DIAGNOSIS . . . . . . .
MODE DOOR MOTOR . . . . . . . . . ..
System Description . . . . . . . . . . . . ..
Mode Door Motor (Front) Component Function
Check . . . . . . . . . . . . . . . . . ..
Mode Door Motor (Front) Diagnosis Procedure . ..
AIR MIX DOOR MOTOR . . . . . . . . ...
System Description . . . . . . . . . . . . ..
Air Mix Door Motor Component Function Check . .
Air Mix Door Motor (Driver) Diagnosis Procedure .
Air Mix Door Motor (Passenger) Diagnosis Proce-
dure . . . . . . . . . . . . . . . . . . .
INTAKE DOOR MOTOR . . . . . . . . ...
System Description . . . . . . . . . . . . ..
Intake Door Motor Component Function Check . ..
Intake Door Motor Diagnosis Procedure . . . . .
BLOWER MOTOR CONTROL SYSTEM . . ..
System Description . . . . . . . . . . . . ..
Front Blower Motor Component Function Check .
Front Blower Motor Diagnosis Procedure . . . .
Front Blower Motor Component Inspection . . . .
Rear Blower Motor Description . . . . . . . .
Rear Blower Motor Component Function Check . .
Rear Air Control (Front) Diagnosis Procedure #1 .
Rear Air Control (Rear) Diagnosis Procedure #2 .
Rear Air Control (Rear) Diagnosis Procedure #3 .
Rear Air Control (Rear) Diagnosis Procedure #4 .
Rear Blower Motor And Relay Component Inspec-
tion . . . . . . . . . . . . . . . . . . ...
REAR AIR CONTROL SYSTEM . . . . . ...
Rear Air Control System Description . . . . . ...
Rear Air Control Component Function Check . . .
Rear Air Control (Front) Diagnosis Procedure . . .
Rear Air Control (Rear) Diagnosis Procedure . . .
MAGNET CLUTCH . . . . . . . . . . ...
System Description . . . . . . . . . . . . ..
Magnet Clutch Component Function Check . . .
Magnet Clutch Diagnosis Procedure . . . . . ...
2009 Pathfinder
HAC-2
WATER VALVE CIRCUIT . . . . . . . . ..
Water Valve Description (VK56DE) . . . . . ....
Water Valve Diagnosis Procedure (VK56DE) . . .
HEATER PUMP . . . . . . . . . . . . .
System Description (VQ40DE) . . . . . . . ...
Diagnosis Procedure (VQ40DE) . . . . . . . .
Component Inspection (VQ40DE) . . . . . . ..
AMBIENT SENSOR . . . . . . . . . . ...
Component Description . . . . . . . . . . ..
Ambient Sensor Diagnosis Procedure . . . . ....
Ambient Sensor Component Inspection . . . . .
IN-VEHICLE SENSOR . . . . . . . . . ...
Component Description . . . . . . . . . . ..
In-Vehicle Sensor Diagnosis Procedure . . . . .
In-Vehicle Sensor Component Inspection . . . ..
OPTICAL SENSOR . . . . . . . . . . ...
Component Description . . . . . . . . . . ..
Optical Sensor Diagnosis Procedure . . . . . ..
INTAKE SENSOR . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
Intake Sensor Diagnosis Procedure . . . . . ...
Intake Sensor Component Inspection . . . . ....
POWER SUPPLY AND GROUND CIRCUIT
FOR CONTROLLER . . . . . . . . . . ..
Component Description . . . . . . . . . . ..
A/C Auto Amp. Component Function Check . . ..
A/C Auto Amp Power and Ground Diagnosis Pro-
cedure . . . . . . . . . . . . . . . . . .
ECU DIAGNOSIS . . . . . . . . . .
AIR CONDITIONER CONTROL . . . . . .
A/C Auto Amp. Terminals Reference Values . . .
Wiring Diagram . . . . . . . . . . . . . ...
SYMPTOM DIAGNOSIS . . . . . . .
AIR CONDITIONER CONTROL . . . . . ..
Symptom Matrix Chart . . . . . . . . . . .
INSUFFICIENT COOLING . . . . . . . ...
Component Function Check . . . . . . . . ..
Diagnostic Work Flow . . . . . . . . . . .
Performance Chart . . . . . . . . . . . .
Trouble Diagnoses for Abnormal Pressure . . ...
INSUFFICIENT HEATING . . . . . . . ...
Component Function Check . . . . . . . . ..
NOISE . . . . . . . . . . . . . . . ..
Component Function Check . . . . . . . . ..
MEMORY FUNCTION DOES NOT OPERATE .
Memory Function Check . . . . . . . . . .
PRECAUTION . . . . . . . . . . .
PRECAUTIONS . . . . . . . . . . . .
Supplemental Restraint System (SRS) "AIR BAG"
and "SEAT BELT PRE-TENSIONER" . . . . ..
Working with HFC-134a (R-134a) . . . . . . .
Precaution for Service Equipment . . . . . .
MANUAL AIR CONDITIONER
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORKFLOW . .
How to Perform Trouble Diagnosis For Quick And
Accurate Repair . . . . . . . . . . . . .
INSPECTION AND ADJUSTMENT . . . . ..
Operational Check . . . . . . . . . . . .
FUNCTION DIAGNOSIS . . . . . . ...
FUNCTION INFORMATION . . . . . . . .
Component Part Location . . . . . . . . . .
Symptom Table . . . . . . . . . . . . . .
REFRIGERATION SYSTEM . . . . . . . .
Refrigerant Cycle . . . . . . . . . . . . ..
Refrigerant System Protection . . . . . . . ..
MANUAL AIR CONDITIONER SYSTEM . . .
Control System Diagram . . . . . . . . . ...
Control System Description . . . . . . . . ..
Discharge Air Flow . . . . . . . . . . . .
Switches And Their Control Function . . . . .
DIAGNOSIS SYSTEM (BCM) . . . . . . ...
CONSULT-III Function (BCM - COMMON ITEM) .
CONSULT-III Function (BCM - AUTO AIR CON-
DITIONER) . . . . . . . . . . . . . . .
COMPONENT DIAGNOSIS . . . . . ..
MODE DOOR MOTOR . . . . . . . . . .
System Description . . . . . . . . . . . ...
Mode Door Motor (Front) Component Function
Check . . . . . . . . . . . . . . . . .
Mode Door Motor (Front) Diagnosis Procedure .
AIR MIX DOOR MOTOR . . . . . . . . ..
System Description . . . . . . . . . . . ...
Air Mix Door Motor Component Function Check ..
Air Mix Door Motor Diagnosis Procedure . . . ..
INTAKE DOOR MOTOR . . . . . . . . ...
System Description . . . . . . . . . . . ...
Intake Door Motor Component Function Check .
Intake Door Motor Diagnosis Procedure . . . ...
BLOWER MOTOR . . . . . . . . . . .
System Description . . . . . . . . . . . ...
Front Blower Motor Component Function Check ..
Front Blower Motor Diagnosis Procedure . . . .
Front Blower Motor Component Inspection . . ..
MAGNET CLUTCH . . . . . . . . . . ...
2009 Pathfinder
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