heater NISSAN NAVARA 2005 Repair Repair Manual

MTC-100
BLOWER MOTOR
BLOWER MOTOR
PFP:27226
ComponentsEJS005GU
Removal and InstallationEJS005GV
REMOVAL
1. Remove the glove box assembly. Refer toIP-15, "LOWER INSTRUMENT PANEL RH AND GLOVE BOX"
.
2. Disconnect the blower motor electrical connector.
3. Remove the three screws and remove the blower motor.
INSTALLATION
Installation is in the reverse order of removal.
1. Heater and cooling unit assembly 2. Blower motor 3. Blower motor resistor
MJIB0247E

AIR CONDITIONER FILTER
MTC-101
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MTC
AIR CONDITIONER FILTERPFP:27277
Removal and InstallationEJS005GW
FUNCTION
The air inside the passenger compartment is filtered by the air condi-
tioner filters when the heater or A/C controls are set on either the
recirculation or fresh mode. The two air conditioner filters are located
in the heater and cooling unit assembly.
REPLACEMENT TIMING
Replacement of the two air conditioner filters is recommended on a regular interval depending on the driving
conditions. Refer toMA-8, "
PERIODIC MAINTENANCE". It may also be necessary to replace the two air con-
ditioner filters as part of a component replacement if the air conditioner filters are damaged.
REPLACEMENT PROCEDURE
1. Remove the glove box assembly.
a. Remove the two lower glove box screws.
b. Open the glove box, then remove the four upper glove box
screws.
NOTE:
It is not necessary to remove the two glove box striker screws.
c. Remove the glove box assembly from the instrument panel to
access the air conditioner filter cover.
2. Remove the screw and remove the air conditioner filter cover.
3. Remove the air conditioner filters from the heater and cooling
unit assembly housing.
MJIB0215E
LJIA0146E
WJIA0628E
MJIB0216E

MTC-102
AIR CONDITIONER FILTER
4. Insert the first new air conditioner filter into the heater and cool-
ing unit assembly housing and slide it over to the right. Insert the
second new air conditioner filter into the heater and cooling unit
assembly housing.
NOTE:
The air conditioner filters are marked with air flow arrows. The
end of the microfilter with the arrow should face the rear of the
vehicle. The arrows should point downward.
5. Install the air conditioner filter cover.
6. Install the glove box assembly in reverse order of removal.
LJIA0148E
MJIB0216E
Lower glove box screws : 3.5 N·m (0.36 kg-m, 31 in-lb)
Upper glove box screws : 3.5 N·m (0.36 kg-m, 31 in-lb)

HEATER & COOLING UNIT ASSEMBLY
MTC-103
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MTC
HEATER & COOLING UNIT ASSEMBLYPFP:27110
ComponentsEJS005GX
Heater and Cooling Unit Assembly —LHD Models—
MJIB0278E
1. High-pressure A/C pipe 2. Low-pressure A/C pipe 3. Expansion valve
4. Heater core and evaporator pipes
grommet5. A/C drain hose grommet 6. A/C drain hose
7. Heater core pipes 8. Coolant reservoir hose 9. Heater and cooling unit assembly

MTC-104
HEATER & COOLING UNIT ASSEMBLY
Heater and Cooling Unit Assembly —RHD Models—
MJIB0279E
1. High-pressure A/C pipe A 2. High-pressure A/C pipe B 3. Low-pressure A/C pipe
4. Expansion valve 5. Heater core and evaporator pipes
grommet6. A/C drain hose grommet
7. A/C drain hose 8. Heater core pipe mounts 9. Heater core pipes
10. Heater and cooling unit assembly

HEATER & COOLING UNIT ASSEMBLY
MTC-105
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MTC
Removal and InstallationEJS005GY
REMOVAL
1. Discharge the refrigerant from the A/C system. Refer toMTC-118, "Discharging Refrigerant".
2. Drain the coolant from the engine cooling system. Refer toCO-8, "
DRAINING ENGINE COOLANT".
3. Remove the cowl top extension. Refer toEI-20, "
Removal and Installation".
4. Remove the exhaust system. Refer toEX-3, "
Removal and Installation".
5. Disconnect the heater hoses from the heater core.
6. Disconnect the high/low pressure 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 toIP-10, "
Removal and Installation".
9. Remove the steering column. Refer toPS-11, "
Removal and Installation".
10. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse
block (J/B) electrical connectors. Refer toPG-38, "
Harness Layout".
11. Disconnect the steering member from each side of the vehicle body.
12. 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.
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 pipe and high-pressure pipe with a new one, and apply
compressor oil to it when installing it.
lAfter charging the refrigerant, check for leaks.
NOTE:
lFill the engine cooling system with the specified coolant mixture. Refer toCO-8, "REFILLING ENGINE
COOLANT".
lRecharge the A/C system. Refer toMTC-118, "Evacuating System and Charging Refrigerant".

MTC-106
HEATER CORE
HEATER CORE
PFP:27140
ComponentsEJS005GZ
1. Heater core cover 2. Heater core pipe bracket 3. Heater core
4. Upper bracket 5. Upper heater and cooling unit case 6. A/C evaporator
7. Lower heater and cooling unit case 8. Blower motor 9. Blower motor resistor
MJIB0248E

HEATER CORE
MTC-107
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MTC
Removal and InstallationEJS005H0
REMOVAL
1. Remove the heater and cooling unit assembly. Refer toMTC-103, "HEATER&COOLING UNIT ASSEM-
BLY".
2. Remove the four screws and remove the upper bracket.
3. Remove the four screws and remove the heater core cover.
4. Remove the heater core pipe bracket.
5. 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.
MJIB0216E

MTC-108
DEFROSTERDOORMOTOR
DEFROSTER DOOR MOTOR
PFP:27733
ComponentsEJS005H1
Defroster Door Motor - Heater and Cooling Unit Assembly
Removal and InstallationEJS006D8
REMOVAL
1. Remove the steering member.
2. Remove the heater and cooling unit assembly. Refer toMTC-103, "
HEATER&COOLING UNIT ASSEM-
BLY".
3. Disconnect the defroster door motor electrical connector.
4. Remove the three screws and remove the defroster door motor.
INSTALLATION
Installation is in the reverse order of removal.
MJIB0249E
1. Heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor
4. Blower motor resistor 5. Mode door motor 6. Defroster door motor

INTAKE DOOR MOTOR
MTC-109
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MTC
INTAKE DOOR MOTORPFP:27730
ComponentsEJS005H2
Intake Door Motor - Heater and Cooling Unit Assembly
Removal and InstallationEJS006D9
REMOVAL
1. Remove the steering member.
2. Remove the heater and cooling unit assembly. Refer toMTC-103, "
HEATER&COOLING UNIT ASSEM-
BLY".
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.
MJIB0249E
1. Heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor
4. Blower motor resistor 5. Mode door motor 6. Defroster door motor