Nissan X-Trail 32. Manual - part 1392

OPERATION

HAC-43

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

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HAC

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MODE VENT switch

• Air outlet changes to VENT when this switch is pressed while air conditioning is ON and air outlet con-

dition is automatic control.

• Air outlet changes as following when this switch is pressed while air conditioning is ON and air outlet 

condition is manual control.

- V/D 

⇒

 DEF

- VENT 

⇒

 Automatic control

- B/L 

⇒

 FOOT

- ALL 

⇒

 D/F

- FOOT 

⇒

 B/L

- D/F 

⇒

 ALL

- DEF 

⇒

 V/D

- Automatic control (MODE DEF/VENT/FOOR switch indicator is not illuminated) 

⇒

 VENT

• When this switch is pressed while air conditioning is ON and MODE VENT is ON, air outlet control is 

changed to automatic control.

• When this switch is pressed while air conditioning is OFF, air conditioning becomes the following status
- Air outlet: VENT
- Air flow: Minimum setting
- Air inlet: Settings set before air conditioning is turned OFF
- A/C switch: Settings set before air conditioning is turned OFF
• When this switch is pressed while MAX DEF is ON, air conditioning becomes the following status
- Air outlet: VENT
- Air flow: Settings set before MAX DEF is turned ON*
- Air inlet: Settings set before MAX DEF is turned ON*
- A/C switch: Settings set before MAX DEF is turned ON*
NOTE:
• Automatic air outlet control is cancelled (AUTO switch indicator turns OFF), when MODE VENT switch 

is pressed while AUTO switch indicator is ON.

• *: When MAX DEF is turned ON from air conditioning OFF status, each settings are set before air con-

ditioning is turned OFF.

MODE FOOT switch

• Air outlet changes to FOOT when this switch is pressed while air conditioning is ON and air outlet con-

dition is automatic control.

• Air outlet changes as following when this switch is pressed while air conditioning is ON and air outlet 

condition is manual control.

- V/D 

⇒

 ALL

- VENT 

⇒

 B/L

- B/L 

⇒

 VENT

- ALL 

⇒

 V/D

- FOOT 

⇒

 Automatic control

- D/F 

⇒

 DEF

- DEF 

⇒

D/F

- Automatic control (MODE DEF/VENT/FOOR switch indicator is not illuminated) 

⇒

 FOOT

• When this switch is pressed while air conditioning is ON and MODE FOOT is ON, air outlet control is 

changed to automatic control.

• When this switch is pressed while air conditioning is OFF, air conditioning becomes the following status
- Air outlet: FOOT
- Air flow: Minimum setting
- Air inlet: Settings set before air conditioning is turned OFF
- A/C switch: Settings set before air conditioning is turned OFF
• When this switch is pressed while MAX DEF is ON, air conditioning becomes the following status
- Air outlet: FOOT
- Air flow: Settings set before MAX DEF is turned ON*
- Air inlet: Settings set before MAX DEF is turned ON*
- A/C switch: Settings set before MAX DEF is turned ON*
NOTE:
• Automatic air outlet control is cancelled (AUTO switch indicator turns OFF), when MODE FOOT switch 

is pressed while AUTO switch indicator is ON.

• *: When MAX DEF is turned ON from air conditioning OFF status, each settings are set before air con-

ditioning is turned OFF.

Switch name

Function

HAC-44

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION

DUAL switch

Left and right ventilation temperature separately control (switch indicator) changes between ON 

⇔

 OFF 

each time this switch is pressed while blower motor is operated.
NOTE:
• Setting temperature for passenger side is the same as that for driver side when left and right ventilation 

temperature separately control is OFF.

• DUAL switch operation is not accepted when DEF mode is ON.

ON·OFF switch

Air conditioning turns ON 

⇔

 OFF each time this switch is pressed.

• When this switch is pressed while air conditioning is ON
- Air conditioning turns OFF and becomes the following status, when this switch is pressed.
• Air outlet: FOOT
• Air flow: OFF
• Air inlet: FRE
• A/C switch: OFF
• When this switch is pressed while air conditioning is OFF
- Air conditioning turns ON and operates according to the settings set before air conditioning is turned 

OFF, when this switch is pressed.

Switch name

Function

DIAGNOSIS SYSTEM (A/C AUTO AMP.)

HAC-45

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

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DIAGNOSIS SYSTEM (A/C AUTO AMP.)

Description

INFOID:0000000010939713

Air conditioning system performs self-diagnosis, operation check, function diagnosis, and various settings
using diagnosis function of each control unit.

CONSULT Function

INFOID:0000000010939714

CONSULT performs the following functions via CAN communication with A/C auto amp. 

NOTE:
Diagnosis should be performed with engine running. Door motor operation speeds become slower and NO
results may be returned even for normal operation if battery voltage drops below 12 V during self-diagnosis. 

ECU IDENTIFICATION

Part number of A/C auto amp. can be checked.

SELF-DIAGNOSIS RESULTS

Diagnosis result that is judged by A/C auto amp. can be checked. Refer to 

HAC-56, "DTC Index"

.

DATA MONITOR

Input/output signal of A/C auto amp. can be checked.
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

Display item list

ECU

Diagnostic item

(CONSULT)

A/C auto amp.

HVAC

Self Diagnostic Result

Data Monitor

Active Test

Work support

BCM

BCM-AIR CONDITIONER

Self Diagnostic Result

Data Monitor

ECM

ENGINE

Self Diagnostic Result

Data Monitor

IPDM E/R

IPDM E/R

Self Diagnostic Result

Data Monitor

Auto active test

Diagnostic mode

Description

Ecu Identification

Displays the part number of A/C auto amp. 

Self Diagnostic Result

Displays the diagnosis results judged by A/C auto amp. 

Data Monitor

Displays the input/output signal of A/C auto amp. 

Active Test

The signals used to activate each device are forcibly supplied from A/C auto amp. 

Work support

Changes the setting for each setting function and performs automatic adjustment of 
components.

Monitor item [Unit]

Description

AMB TEMP SEN

[

°

C (

°

F)]

Ambient temperature value converted from ambient temperature signal received from 
combination meter via CAN communication.

IN-VEH TEMP

[

°

C (

°

F)]

In-vehicle temperature value converted from in-vehicle sensor signal received from in-
vehicle sensor.

HAC-46

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

DIAGNOSIS SYSTEM (A/C AUTO AMP.)

ACTIVE TEST

The signals used to activate each device forcibly supplied from A/C auto amp. operation check of air condi-
tioning system can be performed.

Check each output device

NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated. 

WORK SUPPORT

Setting change of each setting functions and automatic adjustment of components can be performed.

INT TEMP SEN

[

°

C (

°

F)]

Evaporator fin temperature value converted from intake sensor signal received from in-
take sensor.

SUNLOAD SEN

[w/m

2

]

Sunload value converted from sunload sensor signal received from sunload sensor 

AMB SEN CAL

[

°

C (

°

F)]

Ambient temperature value calculated by A/C auto amp.

IN-VEH CAL

[

°

C (

°

F)]

In-vehicle temperature value calculated by A/C auto amp.

INT TEMP CAL

[

°

C (

°

F)]

Evaporator fin temperature value calculated by A/C auto amp.

SUNL SEN CAL

[w/m

2

]

Sunload value calculated by A/C auto amp.

COMP REQ SIG

[On/Off]

Displays A/C ON signal ON/OFF status transmitted to ECM.

COMP ECV DUTY

[%]

Duty ratio of ECV (electrical control valve) judged by A/C auto amp.

FAN REQ SIG

[On/Off]

Displays blower fan ON signal ON/OFF status transmitted to ECM.

FAN DUTY

*

Target duty ratio of voltage (applied voltage) applied to blower motor by A/C auto amp.

XM

Target discharge air temperature (driver side) judged by A/C auto amp. depending on 
the temperature setting and the value from each sensor.

ENG COOL TEMP

[

°

C (

°

F)]

Engine coolant temperature signal value received from ECM via CAN communication.

VEHICLE SPEED

[km/h

(mph)]

Vehicle speed signal value received from combination meter via CAN communication.

Monitor item [Unit]

Description

Test item

Description

HVAC TEST

The operation check of air conditioning system can be performed by selecting the mode. 
Refer to the following table for the conditions of each mode. 

Test item

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

Mode door motor position

VENT

VENT

B/L

B/L

FOOT

D/F

DEF

Intake door motor position

REC

REC

20% FRE

20% FRE

FRE

FRE

FRE

Air mix door motor (driver side) 
position

FULL COLD

FULL COLD

FULL COLD

FULL HOT

FULL HOT

FULL HOT

FULL HOT

Air mix door motor (passenger 
side) position

FULL COLD

FULL COLD

FULL COLD

FULL HOT

FULL HOT

FULL HOT

FULL HOT

Blower motor (Duty ratio)

35%

35%

60%

60%

90%

90%

35%

Magnet clutch

ON

ON

ON

ON

OFF

OFF

ON

ECV duty ratio

80%

80%

40%

40%

0%

0%

70%

Work item

Description

Refer to

TEMP SET CORRECT

Setting change of temperature setting trimmer can be performed. 

HAC-74, "Temperature 
Setting Trimmer"

REC MEMORY SET

Setting change of inlet port memory function (REC) can be per-
formed. 

HAC-74, "Inlet Port Mem-
ory Function (REC)"

FRE MEMORY SET

Setting change of inlet port memory function (FRE) can be per-
formed. 

HAC-75, "Inlet Port Mem-
ory Function (FRE)"