Nissan Leaf. Manual — part 818
SYSTEM SETTING
HAC-275
< BASIC INSPECTION >
[AUTO A/C (WITHOUT HEAT PUMP)]
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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
CLOSE
Mode2
OPEN
OPEN
Mode3
CLOSE
OPEN
Mode4
CLOSE
CLOSE
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.
ON
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)]
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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
1.
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
1.
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"
NO
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000010121981
1.
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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