Nissan Frontier D40. Manual - part 1124

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VARIABLE BLOWER CONTROL

VARIABLE BLOWER CONTROL

Removal and Installation

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Variable Blower Control

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.

WJIA1480E

1.

Heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor

4.

Variable blower control

5.

Mode door motor

FRONT BLOWER MOTOR RESISTOR

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FRONT BLOWER MOTOR RESISTOR

Removal and Installation

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Blower Motor Resistor

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.

WJIA1480E

1.

Heater and cooling unit assembly

2.

Intake door motor

3.

Air mix door motor

4.

Blower motor resistor

5.

Mode door motor

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HEATER & COOLING UNIT ASSEMBLY

HEATER & COOLING UNIT ASSEMBLY

Component

INFOID:0000000005275973

Heater and Cooling Unit Assembly

Removal and Installation

INFOID:0000000005275974

REMOVAL

1.

Move the two front seats to the rear most position on the seat track.

2.

Discharge the refrigerant from the A/C system. Refer to 

HA-26, "HFC-134a (R-134a) Service Procedure"

.

3.

Drain the coolant from the engine cooling system. Refer to 

CO-12, "Changing Engine Coolant"

(QR25DE), 

CO-39, "Changing Engine Coolant"

 (VQ40DE).

4.

Disconnect the battery negative and positive terminals.

WJIA1291E

1.

High-pressure A/C pipe

2.

Low-pressure A/C pipe

3.

Expansion valve

4.

Heater core and evaporator pipes 
grommet

5.

A/C drain hose grommet

6.

A/C drain hose

7.

Heater core pipe mounts

8.

Heater core pipes

9.

Heater and cooling unit assembly

HEATER & COOLING UNIT ASSEMBLY

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5.

For vehicles equipped with the VQ40DE engine, remove the RH
heater core pipes nut.

6.

Disconnect the heater core hoses from the heater core.

7.

Disconnect the high- and low-pressure A/C pipes from the
expansion valve.

8.

Remove the instrument panel and center console. Refer to 

IP-

10, "Exploded View"

.

9.

Remove the two front floor ducts.

10. Remove the steering column. Refer to 

ST-12, "Removal and

Installation"

.

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 

PG-38, "Harness Lay-

out"

.

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 

IP-10, "Exploded View"

.

13. 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.

• Use suitable plugs on the heater core pipes to prevent coolant leakage.

14. Remove the 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.

• After charging the refrigerant, check for leaks. Refer to 

HA-20, "Checking of Refrigerant Leaks"

.

NOTE:
• Fill the engine cooling system with the specified coolant mixture. Refer to 

CO-12, "Changing Engine Cool-

ant"

 (QR25DE), 

CO-39, "Changing Engine Coolant"

 (VQ40DE).

• Recharge the A/C system. Refer to 

HA-26, "HFC-134a (R-134a) Service Procedure"

.

WJIA1292E