2005 NISSAN NAVARA cooling

ATC-126
HEATER & COOLING UNIT ASSEMBLY
Removal and Installation
EJS006C9
REMOVAL
1. Discharge the refrigerant from the A/C system. Refer toATC-138, "Discharging Refrigerant".
2. Drain the coolant from the engine cooling system. Refer toCO-8, "
DRAINING ENGINE COOLANT".
3. Remove the heater core pipes RH nut.
4. Disconnect the heater core hoses from the heater core.
5. Disconnect the high- and low-pressure A/C pipes from the
expansion valve.
6. Move the two front seats to the rearmost position on the seat
track.
7. Remove the instrument panel and console panel. Refer toIP-10,
"Removal and Installation".
8. Remove the two front floor ducts.
9. Remove the steering column. Refer toPS-10, "
Removal and
Installation".
10. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse
block (SMJ) electrical connectors. Refer toPG-38, "
Harness Layout".
11. Remove the covers then remove the three steering member bolts from each side to disconnect the steer-
ing member from the vehicle body.
12. Remove the heater and cooling unit assembly with it attached to the steering member, from the vehicle.
CAUTION:
lUse 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.
lUse suitable plugs on the heater core pipes to prevent coolant leakage.
13. Remove the heater and cooling unit assembly from the steering member.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
lReplace 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.
lAfter charging the refrigerant, check for leaks. Refer toATC-150, "Checking for Refrigerant Leaks"
.
NOTE:
lFill the engine cooling system with the specified coolant mixture. Refer toCO-8, "REFILLING ENGINE
COOLANT".
lRecharge the A/C system. Refer toATC-138, "Evacuating System and Charging Refrigerant".
LJIA0165E

HEATER CORE
ATC-127
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HEATER COREPFP:27140
ComponentsEJS006CA
Removal and InstallationEJS006CB
REMOVAL
1. Remove the heater and cooling unit assembly. Refer toATC-126, "REMOVAL".
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 air conditioner filters are contaminated from coolant leak-
ing from the heater core, replace the air conditioner filters with
new ones before installing the new heater core.
INSTALLATION
Installation is in the reverse order of removal.
1. Heater core and evaporator pipe bracket 2. Heater core 3. Heater and cooling unit assembly
4. Heater core cover
MJIB0211E
MJIB0216E

ATC-128
HEATER PUMP
HEATER PUMP
PFP:92264
ComponentsEJS006CC
Heater Pump
Removal and InstallationEJS006DC
REMOVAL
1. Partially drain the engine cooling system. Refer toCO-8, "DRAINING 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:
lThe heater pump rubber mount must be fully seated on the bracket.
lDo 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 5. Heater hose

INTAKE DOOR MOTOR
ATC-129
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INTAKE DOOR MOTORPFP:27730
ComponentsEJS006CD
Intake Door Motor - Heater and Cooling Unit Assembly
NOTE:
This illustration is for LHD models. The layout for RHD models is symmetrically opposite.
Removal and InstallationEJS006DD
REMOVAL
1. Remove the heater and cooling unit assembly. Refer toATC-124, "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.
1. Heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
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ATC-130
MODE DOOR MOTOR
MODE DOOR MOTOR
PFP:27731
ComponentsEJS006CE
Mode Door Motor - Heater and Cooling Unit Assembly
NOTE:
This illustration is for LHD models. The layout for RHD models is symmetrically opposite.
Removal and InstallationEJS006DE
REMOVAL
1. Remove the instrument panel side finisher. Refer toIP-10, "INSTRUMENT PANEL ASSEMBLY".
2. Remove the lower instrument cover. Refer toIP-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.
1. Heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
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AIR MIX DOOR MOTOR
ATC-131
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AIR MIX DOOR MOTORPFP:27732
ComponentsEJS006CF
Air Mix Door Motors - Heater and Cooling Unit Assembly
NOTE:
This illustration is for LHD models. The layout for RHD models is symmetrically opposite.
Removal and InstallationEJS006CG
AIR MIX DOOR MOTOR (DRIVER)
Removal
1. Remove the heater and cooling unit assembly. Refer toATC-124, "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.
AIR MIX DOOR MOTOR (PASSENGER)
Removal
1. Remove the instrument panel side finisher. Refer toEI-33, "Components".
2. Remove the lower instrument panel RH. Refer toIP-15, "
LOWER INSTRUMENT PANEL RH AND
GLOVE BOX".
3. Remove the steering member from the heater and cooling unit assembly.
4. Disconnect the air mix door motor electrical connector.
5. Remove the three screws and remove the air mix door motor.
1. Heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
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VARIABLE BLOWER CONTROL
ATC-133
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VARIABLE BLOWER CONTROLPFP:27200
ComponentsEJS006CH
Variable Blower Control - Heater and Cooling Unit Assembly
NOTE:
This illustration is for LHD models. The layout for RHD models is symmetrically opposite.
Removal and InstallationEJS006DF
REMOVAL
1. Disconnect the variable blower control electrical connector.
2. Remove the two screws and remove the variable blower control.
INSTALLATION
Installation is in the reverse order of removal.
1. Heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
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ATC-134
DUCTS AND GRILLES
DUCTS AND GRILLES
PFP:27860
ComponentsEJS006CJ
Ducts - Heater and Cooling Unit Assembly
MJIB0212E
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. Heater and cooling unit assembly 8. Floor connector duct grilles 9. Floor connector duct