Nissan Leaf. Instruction — part 754

COMPONENT PARTS

HAC-19

< SYSTEM DESCRIPTION >

[AUTO A/C (WITH HEAT PUMP)]

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SYSTEM DESCRIPTION

COMPONENT PARTS

AUTOMATIC AIR CONDITIONING SYSTEM
AUTOMATIC AIR CONDITIONING SYSTEM : Component Parts Location

INFOID:0000000010121729

A. Relay box

B. RH side of engine compartment

ALIIA0799ZZ

No.

Component

Description

1.

TCU

• Transmits a remote climate control request signal that is received by the Telemat-

ics system to VCM via CAN communication.

• Refer to

AV-510, "Component Parts Location"

for detailed installation location.

2.

Electric compressor

Refer to

HAC-26, "Electric Compressor"

.

3.

Compressor suction refrigerant temper-
ature sensor

Refer to

HAC-28, "Compressor Suction Refrigerant Temperature Sensor"

.

4.

Ambient sensor

Refer to

HAC-25, "Ambient Sensor"

.

5.

PDM (Power delivery module)

• Supplies high voltage system power to the electric compressor.
• Refer to

EVC-15, "Component Parts Location"

for detailed installation location.

6.

Refrigerant pressure sensor

Refer to

HAC-26, "Refrigerant Pressure Sensor"

.

7.

M/C relay

The M/C (motor control) relay supplies the main power to the EV system. VCM ac-
tivates the M/C relay and supplies power to the EV system when the EV system
needs to be started.

8.

Li-ion battery

• Supplies high voltage system power to the PTC heater and PDM (power delivery

module).

• Refer to

EVB-14, "Component Parts Location"

for detailed installation location.

9.

A/C relay

When the M/C relay is ON, it is controlled by VCM and 12 V power is supplied to
each component of air conditioning system.

HAC-20

< SYSTEM DESCRIPTION >

[AUTO A/C (WITH HEAT PUMP)]

COMPONENT PARTS

10.

Refrigerant channel switching 2 way
type valve

Refer to

HAC-29, "Refrigerant Channel Switching 2 Way Type Valve"

.

11.

Refrigerant channel switching 3 way
type valve

Refer to

HAC-29, "Refrigerant Channel Switching 3 Way Type Valve"

.

No.

Component

Description

A. Behind glove box

B. Back side of A/C unit

C. Left side of A/C unit

D. Evaporator

E. Right side of A/C unit

F. Behind glove box

ALIIA0794ZZ

COMPONENT PARTS

HAC-21

< SYSTEM DESCRIPTION >

[AUTO A/C (WITH HEAT PUMP)]

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HAC

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A/C UNIT ASSEMBLY

No.

Component

Description

1.

Sunload sensor

Refer to

HAC-26, "Sunload Sensor"

2.

AV control unit

• Transmits a A/C-heater timer setting time signal and timer/remote setting tem-

perature signal to VCM via CAN communication.

• Receives an A/C display signal from VCM via CAN and indicates the status of

air conditioning system in the display.

• Refer to

AV-212, "Component Parts Location"

(without Bose®) or

AV-335, "Com-

ponent Parts Location"

(with Bose®) for detailed installation location.

3.

In-vehicle sensor

Refer to

HAC-25, "In-Vehicle Sensor"

.

4.

A/C auto amp.

Refer to

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

.

5.

Heat pump control unit

Refer to

HAC-28, "Heat Pump Control Unit"

.

6.

Power transistor

Refer to

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

.

7.

Aspirator

Refer to

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

.

8.

Air mix door motor

Refer to

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

.

9.

Intake door motor

Refer to

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

.

10.

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"

.

11.

Compressor discharge refrigerant tem-
perature sensor

Refer to

HAC-28, "Compressor Discharge Refrigerant Temperature Sensor"

.

12.

Intake sensor

Refer to

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

.

13.

Blower motor

Refer to

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

.

14.

PTC heater

Refer to

HAC-27, "PTC Heater"

.

15.

Mode door motor

Refer to

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

.

16.

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, remote cli-
mate control request signal, wake up request signal and deice permission 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 con-
trol 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 commu-
nication 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 communication
for deice control.

• CAN A/C AV C/U

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

• Refer to

EVC-15, "Component Parts Location"

for detailed installation location.

HAC-22

< SYSTEM DESCRIPTION >

[AUTO A/C (WITH HEAT PUMP)]

COMPONENT PARTS

A/C UNIT ASSEMBLY : Aspirator

INFOID:0000000010121730

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.

A/C UNIT ASSEMBLY : Intake Sensor

INFOID:0000000010121731

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:0000000010121732

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:0000000010121733

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:0000000010121734

DESCRIPTION

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

RJIA1804E

JSIIA1630GB

JSIIA1768GB

JSIIA1769GB