Nissan Murano Z51. Manual - part 838

INSPECTION AND ADJUSTMENT

HAC-7

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

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INSPECTION AND ADJUSTMENT

Description & Inspection

INFOID:0000000005514570

DESCRIPTION

The purpose of the operational check is to check that the individual system operates normally.

INSPECTION PROCEDURE

1.

CHECK MEMORY FUNCTION

1.

Start the engine.

2.

Operate the temperature control switch (driver side) and raise the temperature setting to 32

°

C (90

°

F). 

3.

Press the ON/OFF switch.

4.

Turn the ignition switch OFF.

5.

Turn the ignition switch ON.

6.

Press the AUTO switch.

7.

Check that the temperature setting before turning the ignition switch OFF is stored. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Memory function malfunction: 

HAC-117, "Inspection procedure"

.

2.

CHECK BLOWER MOTOR SPEED

1.

Start the engine.

2.

Operate the fan control dial. Check that the fan speed changes. Check the operation for all fan speeds. 

3.

Set the fan speed to speed 7.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Blower motor system malfunction: 

HAC-69, "Diagnosis Procedure"

.

3.

CHECK DISCHARGE AIR(MODE SWITCH AND DEF SWITCH)

1.

Press the MODE switch and the DEF switch.

2.

Check that the air outlets change according to each indicated air outlet by placing a hand in front of the
outlets. Refer to 

HAC-15, "System Description"

. 

NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and the intake door position is at
the FRE when the D/F or DEF is selected.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Mode door system malfunction: 

HAC-62, "Diagnosis Procedure"

.

4.

CHECK DISCHARGE AIR (UPPER VENT SWITCH)

1.

Press the UPPER VENT switch. 

2.

The UPPER VENT switch indicator is turned ON. 

Conditions

: Engine running at normal operating temperature

HAC-8

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

INSPECTION AND ADJUSTMENT

3.

Check that the air blown from the UPPER VENT does not greatly deviate from the air mix ratio. 

4.

Press the UPPER VENT switch again. 

5.

The UPPER VENT switch indicator is turned OFF. 

6.

The air blown from the UPPER VENT stops. 

Does it operate normally?

YES

>> GO TO 5.

NO

>> Upper ventilator door system malfunction: 

HAC-67, "Diagnosis Procedure"

.

5.

CHECK INTAKE AIR

1.

Press the intake switch. Indicator is turned ON (REC).

2.

Press the intake switch again. Indicator is turned OFF (FRE).

3.

Listen for the intake door position change. (Slight change of blower sound can be heard.)

NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and the intake door position is at
the FRE when the D/F or DEF is selected.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Intake door system malfunction: 

HAC-65, "Diagnosis Procedure"

.

6.

CHECK A/C SWITCH

1.

Press the A/C switch.

2.

The A/C switch indicator is turned ON.
Confirm that the compressor clutch engages (sound or visual inspection).

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Magnet clutch system malfunction: 

HAC-73, "Diagnosis Procedure"

.

7.

CHECK WITH TEMPERATURE SETTING LOWERED

1.

Operate the compressor. 

2.

Operate the temperature control switch (driver side) and lower the temperature setting to 18

°

C (60

°

F). 

3.

Check that the cool air blows from the outlets. 

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Insufficient cooling: 

HAC-109, "Inspection procedure"

.

8.

CHECK WITH TEMPERATURE SETTING RAISED

1.

Operate the temperature control switch (driver side) and raise the temperature setting to 32

°

C (90

°

F) after

warming up the engine. 

2.

Check that the warm air blows from the outlets.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Insufficient heating: 

HAC-112, "Inspection procedure"

.

JPIIA0509GB

INSPECTION AND ADJUSTMENT

HAC-9

< BASIC INSPECTION >

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9.

CHECK LH/RH INDEPENDENT TEMPERATURE ADJUSTMENT FUNCTION

1.

Press the DUAL switch, and then check that “DUAL” is shown on the display. 

2.

Operate the temperature control switch (driver side). Check that the discharge air temperature (driver
side) changes. 

3.

Operate the temperature control switch (passenger side). Check that the discharge air temperature (pas-
senger side) changes. 

4.

Press the DUAL switch, and then check that the temperature setting (LH/RH) is unified to the driver side
temperature setting. 

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Refer to 

HAC-108, "Diagnosis Chart By Symptom"

 and perform the appropriate diagnosis. 

10.

CHECK AUTO MODE

1.

Press the AUTO switch, and then check that “AUTO” is shown on the display. 

2.

Operate the temperature control switch (driver side). Check that the fan speed or outlet changes (the dis-
charge air temperature or fan speed varies depending on the ambient temperature, in-vehicle tempera-
ture, and temperature setting). 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-108, "Diagnosis Chart By Symptom"

 and perform the appropriate diagnosis. 

Temperature Setting Trimmer

INFOID:0000000005514571

Description

If the temperature felt by the customer is different than the air flow temperature controlled by the temperature
setting, the auto amplifier control temperature can be adjusted to compensate for the temperature setting. 

How to set

Using CONSULT-III, perform “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC. 

NOTE:

• When the temperature setting is set to 25.0

°

C (77

°

F) and 

−

3.0

°

C (

−

6

°

F), the temperature controlled by auto amp is 25.0

°

C (77

°

F) 

−

3.0

°

C (6

°

F) = 22.0

°

C (71

°

F) and the temperature becomes lower than the temperature setting. 

• When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the

difference between the temperature setting and control temperature may be cancelled. 

Foot Position Setting Trimmer

INFOID:0000000005514572

Description

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

Work support items

Display (

°

F)

Display (

°

C)

TEMP SET CORRECT

6

3.0

5

2.5

4

2.0

3

1.5

2

1.0

1

0.5

0 (initial status)

0 (initial status)

−

1

−

0.5

−

2

−

1.0

−

3

−

1.5

−

4

−

2.0

−

5

−

2.5

−

6

−

3.0

HAC-10

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

INSPECTION AND ADJUSTMENT

How to set

Using CONSULT-III, perform “BLOW SET” on “WORK SUPPORT” of HVAC. 

NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V
or less, the setting of the discharge air mix ratio in FOOT mode may be cancelled. 

Inlet Port Memory Function (FRE)

INFOID:0000000005514573

Description

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

form the memory” or “Do not perform the memory” of the FRE switch ON (fresh air intake) condition can be
selected. 

• If “Perform the memory” was set, the FRE switch will be ON (fresh air intake) when turning the ignition switch

to the ON position again. 

• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-

tion switch to the ON position again. 

How to set

Using CONSULT-III, perform “FRE MEMORY SET” on “WORK SUPPORT” of HVAC. 

NOTE:

When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
FRE switch memory function may be cancelled. 

Inlet Port Memory Function (REC)

INFOID:0000000005514574

Description

• If the ignition switch is turned to the OFF position while the REC switch is set to ON (recirculation), “Perform

the memory” or “Do not perform the memory” of the REC switch ON (recirculation) condition can be
selected. 

• If “Perform the memory” was set, the REC switch will be ON (recirculation) when turning the ignition switch

to the ON position again. 

• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-

tion switch to the ON position again. 

How to set

Using CONSULT-III, perform “REC MEMORY SET” on “WORK SUPPORT” of HVAC. 

NOTE:

When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
REC switch memory function may be cancelled. 

Work support items

Display

DEF door position

Auto control

Manual control

BLOW SET

Mode 1

OPEN

CLOSE

Mode 2 (initial status)

OPEN

OPEN

Mode 3

CLOSE

OPEN

Mode 4

CLOSE

CLOSE

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

Setting

REC MEMORY SET

WITHOUT (initial status)

Perform the memory of manual REC

WITH

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