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Nissan Leaf. Manual - part 818

SYSTEM SETTING

HAC-275

< BASIC INSPECTION >

[AUTO A/C (WITHOUT HEAT PUMP)]

HAC

When the 12V battery cable is disconnected from the negative terminal or when the 12V battery voltage

becomes 10 V or less, the setting of the REC memory function may be cancelled.

Inlet Port Memory Function (FRE)

INFOID:0000000010121972

DESCRIPTION

• If the ignition switch is turned to the OFF position while the intake switch is set to OFF (fresh air intake), “Per-

form the memory” or “Do not perform the memory” of intake switch OFF (fresh air intake) condition can be

selected.

• If “Perform the memory” is set, the intake switch is OFF (fresh air intake) when turning the ignition switch to

the ON position again.

• If “Do not perform the memory” is set, the air inlets is controlled automatically when turning the ignition

switch to the ON position again.

HOW TO SET

With CONSULT

Perform the “FRE MEMORY SET” in “Work support” of “HVAC”.

NOTE:

When the 12V battery cable is disconnected from the negative terminal or when the 12V battery voltage

becomes 10 V or less, the setting of the FRE memory function may be cancelled.

Foot Position Setting Trimmer

INFOID:0000000010121973

DESCRIPTION

In FOOT mode, the air blowing to DEF can change ON/OFF.

HOW TO SET

With CONSULT

Perform the “BLOW SET” in “Work support” of “HVAC”.

NOTE:

When the 12V battery cable is disconnected from the negative terminal or when the 12V battery voltage

becomes 10 V or less, the setting of the discharge air mix ratio in FOOT mode may be cancelled.

Compressor Operation Setting at Defroster Mode (Timer/Remote Climate Control)

INFOID:0000000010121974

DESCRIPTION

For A/C-heater timer and remote climate control, change the setting of electric compressor operation during

DEF mode.

How to set

Using CONSULT, select “COMP OPRT SET AT DEF MODE (TIM/RMT CLIMT CONT)” in “Work support“ of

“HVAC”.

Work support items

Display

Setting

FRE MEMORY SET

WITHOUT

Perform the memory of manual FRE

WITH (initial status)

Do not perform the memory of manual FRE (auto control)

Work support items

Display

Defroster door position

Audio control

Manual control

BLOW SET

Mode1 (initial status)

OPEN

Mode2

OPEN

Mode3

OPEN

Mode4

HAC-276

< BASIC INSPECTION >

[AUTO A/C (WITHOUT HEAT PUMP)]

SYSTEM SETTING

Setting of Compressor Maximum Rotation Speed During Pre Air Conditioning

INFOID:0000000010121975

DESCRIPTION

The compressor maximum rotation speed during remote or timer air conditioning can be adjusted.

How to set

Using CONSULT, select ”TARGET MAX RPM ADJ AT PRE-CLIMATE“ in ”Work Support“ of ”HVAC“.

Setting of Compressor Maximum Rotation Speed During Idling

INFOID:0000000010121976

DESCRIPTION

The electric compressor maximum rotation speed during idling can be adjusted.

How to set

Using CONSULT, select ”TARGET MAX RPM ADJ AT IDL“ in ”Work support“ of ”HVAC“.

Work support items

Display

Setup

COMP OPRT SET AT DEF MODE (TIM/RMT
CLIMT CONT)

OFF

During DEF mode operation, the electric compressor
stops.

During DEF mode operation, the electric compressor op-
erates.

Work support items

Note

TARGET MAX RPM ADJ AT PRE-CLIMATE

Raising set value: Improve the cooling performance.
Lowering set value: Reduce the operation noise level.

Work support items

Note

TARGET MAX RPM ADJ AT IDL

Raising set value: Improve the cooling performance.
Lowering set value: Reduce the operation noise level.

DOOR MOTOR STARTING POSITION RESET

HAC-277

< BASIC INSPECTION >

[AUTO A/C (WITHOUT HEAT PUMP)]

HAC

DOOR MOTOR STARTING POSITION RESET

Description

INFOID:0000000010121977

• Reset signal is transmitted from A/C auto amp. to air mix door motor and mode door motor. Starting position

reset can be performed.

NOTE:

During reset, DEF switch indicator blinks.

• When air mix door motor or mode door motor is removed and installed, always perform door motor starting

position reset.

Work Procedure

INFOID:0000000010121978

PERFORM DOOR MOTOR STARTING POSITION RESET

With CONSULT

1. Turn ignition switch ON.

2. Select “Door Motor Starting Position Reset” in “Work support” of “HVAC” using CONSULT.

3. Touch “Start” and wait a few seconds.

4. Make sure the “COMPLETED” is displayed on CONSULT screen.

>> Inspection End.

HAC-278

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITHOUT HEAT PUMP)]

U1000 CAN COMM CIRCUIT

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000010121979

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-board mul-

tiplex communication line with high data communication speed and excellent error detection ability. A modern

vehicle is equipped with many ECMs, and each control unit shares information and links with other control

units during operation (not independent). In CAN communication, 2 control units are connected with 2 commu-

nication lines (CAN-L line and CAN-H line) allowing a high rate of information transmission with less wiring.

Each control unit transmits/receives data but selectively reads required data only.

Refer to

LAN-37, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"

for details of the

communication signal.

DTC Logic

INFOID:0000000010121980

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn power switch ON and wait at least 2 seconds or more.

2. Select “Self Diagnostic Result” of “HVAC” using CONSULT.

3. Check DTC.
Is DTC detected?

YES

>> Refer to

HAC-278, "Diagnosis Procedure"

>> Check intermittent incident. Refer to

GI-53, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000010121981

CHECK CAN COMMUNICATION SYSTEM

Check CAN communication system. Refer to

LAN-17, "Trouble Diagnosis Flow Chart"

>> Inspection End.

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

U1000

CAN COMM CIRCUIT

When A/C auto amp. is not transmitting or receiving
CAN communication signal for 2 or more seconds.

CAN communication system

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