Nissan Leaf. Manual - part 804

COMPONENT PARTS

HAC-219

< SYSTEM DESCRIPTION >

[AUTO A/C (WITHOUT HEAT PUMP)]

C

D

E

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B

HAC

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A. Back side of A/C unit

B. Left side of A/C unit

C. Evaporator

D. Right side of A/C unit

E. Behind glove box

No.

Component

Description

1.

Sunload sensor

Refer to 

HAC-26, "Sunload Sensor"

.

2.

In-vehicle sensor

Refer to 

HAC-25, "In-Vehicle Sensor"

.

3.

A/C auto amp.

Refer to 

HAC-25, "A/C Auto Amp."

.

4.

Power transistor

Refer to 

HAC-25, "A/C UNIT ASSEMBLY : Power Transistor"

.

5.

Aspirator

Refer to 

HAC-22, "A/C UNIT ASSEMBLY : Aspirator"

.

ALIIA0798ZZ

HAC-220

< SYSTEM DESCRIPTION >

[AUTO A/C (WITHOUT HEAT PUMP)]

COMPONENT PARTS

A/C UNIT ASSEMBLY
A/C UNIT ASSEMBLY : Aspirator

INFOID:0000000010121925

The aspirator generates vacuum by the air blown from the A/C unit

and draws the air of the passenger room into the in-vehicle sensor

via the aspirator duct.

6.

Air mix door motor

Refer to 

HAC-22, "A/C UNIT ASSEMBLY : Air Mix Door Motor"

.

7.

Intake door motor

Refer to 

HAC-23, "A/C UNIT ASSEMBLY : Intake Door Motor"

.

8.

PTC heater outlet air and A/C unit case 
temperature sensor assembly

• PTC heater outlet air temperature sensor: 

HAC-22, "A/C UNIT ASSEMBLY 

: PTC Heater Outlet Air Temperature Sensor"

.

• A/C unit case temperature sensor: 

HAC-22, "A/C UNIT ASSEMBLY : A/C 

Unit Case Temperature Sensor"

.

9.

Intake sensor

Refer to 

HAC-22, "A/C UNIT ASSEMBLY : Intake Sensor"

.

10.

Blower motor

Refer to 

HAC-24, "A/C UNIT ASSEMBLY : Blower Motor"

.

11.

PTC heater

Refer to 

HAC-27, "PTC Heater"

.

12.

Mode door motor

Refer to 

HAC-23, "A/C UNIT ASSEMBLY : Mode Door Motor"

.

13.

VCM

• A/C CAN

Inputs a refrigerant pressure sensor signal and transmits it to the A/C auto 
amp. via CAN communication.

• CAN A/C

Calculates each input signal and transmits a timer A/C request signal, re-
mote climate control request signal, wake up request signal and deice per-
mission signal via CAN communication to the A/C auto amp.

• A/C CAN A/C

Controls the high voltage system and transmits an A/C maximum power 
signal via CAN communication to the A/C auto amp.

• ECO A/C ECO

Transmits an ECO mode request signal to the A/C auto amplifier during 
ECO mode control.

• AV C/U A/C

Transfers a timer/remote setting temperature signal that is received from 
AV control unit to the A/C auto amp.

• CAN A/C

Receives a cooling fan speed request signal from the A/C auto amp. via 
CAN communication for cooling fan control.

• CAN A/C

Receives a timer A/C operation signal from the A/C auto amp. via CAN 
communication for timer A/C-heater timer operation start time calculation.

• CAN A/C

Receives a deice request signal from the A/C auto amp. via CAN commu-
nication for deice control.

• CAN A/C AV C/U

Receives an A/C display signal from the A/C auto amp. via CAN communi-
cation, then transmits it to AV control unit.

• Refer to 

EVC-15, "Component Parts Location"

 for details installation loca-

tion.

No.

Component

Description

RJIA1804E

COMPONENT PARTS

HAC-221

< SYSTEM DESCRIPTION >

[AUTO A/C (WITHOUT HEAT PUMP)]

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A/C UNIT ASSEMBLY : Intake Sensor

INFOID:0000000010121926

Intake sensor measures evaporator fin temperature. This sensor

uses a thermistor that decreases electrical resistance as tempera-

ture increases.

A/C UNIT ASSEMBLY : PTC Heater Outlet Air Temperature Sensor

INFOID:0000000010121927

PTC heater outlet air temperature sensor measures the air tempera-

ture immediately after the air passes the PTC heater core. This sen-

sor uses a thermistor that decreases electrical resistance as

temperature increases.

A/C UNIT ASSEMBLY : A/C Unit Case Temperature Sensor

INFOID:0000000010121928

A/C unit case temperature sensor measures the A/C unit case tem-

perature around the PTC heater core. This sensor uses a thermistor

that decreases electrical resistance as temperature increases.

A/C UNIT ASSEMBLY : Air Mix Door Motor

INFOID:0000000010121929

DESCRIPTION

• The step motor type motor is adopted for air mix door motor.

• When the drive signal from the A/C auto amp. is input into the motor, the step motor inside the motor rotates

by the number of steps corresponding to the drive signal and stops at the target door position.

• The rotational movement of the motor is transmitted via the rod and lever to the air mix doors (upper air mix

door, lower air mix door), changing the discharge air temperature.

AIR MIX DOOR MOTOR DRIVE METHOD

• The 4 drive coils are excited in sequence in order to drive the motor.

JSIIA1630GB

JSIIA1768GB

JSIIA1769GB

HAC-222

< SYSTEM DESCRIPTION >

[AUTO A/C (WITHOUT HEAT PUMP)]

COMPONENT PARTS

• Direction of rotation is changeable by recomposing the pattern of excitation.

A/C UNIT ASSEMBLY : Mode Door Motor

INFOID:0000000010121930

DESCRIPTION

• The step motor type motor is adopted for mode door motor.

• When the drive signal from the A/C auto amp. is input into the motor, the step motor inside the motor rotates

by the number of steps corresponding to the drive signal and stops at the target door position.

• The rotational movement of the motor is transmitted via the rod, link, and lever to the mode doors (center

ventilator, defrost door, sub-defrost door, side ventilator door, and foot door), changing the air outlets.

MODE DOOR MOTOR DRIVE METHOD

• The 4 drive coils are excited in sequence in order to drive the motor.

• Direction of rotation is changeable by recomposing the pattern of excitation.

A/C UNIT ASSEMBLY : Intake Door Motor

INFOID:0000000010121931

• Intake door motor consists of a motor that drives the door and PBR (Potentiometer Balance Resister) that

detects door position.

• Motor operates according to drive signal from A/C auto amp.

• Motor rotational movement is transmitted via the lever to the intake door, changing the air inlet.

JSIIA1655GB

JZIIA0033GB