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Nissan Murano. Manual - part 865

HAC-234

< SYMPTOM DIAGNOSIS >

[WITH 7 INCH DISPLAY]

INSUFFICIENT COOLING

Using CONSULT, perform “HVAC TEST” “ACTIVE TEST” of HVAC to check each output device. Refer to

HAC-166, "CONSULT Function"

NOTE:
Perform the ACTIVE TEST after starting the engine because the compressor is operated.

Refer to the table and check the outlet, inlet, air flow temperature, blower motor control signal, magnet
clutch operation, and air mix ratio. Visually check each operating condition, by listening for noise, touching
air outlets with a hand, etc.

NOTE:

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

Does it operate normally?

YES

>> GO TO 7.

Test item

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

Mode door position

VENT1

VENT2

B/L1

B/L2

FOOT

D/F

DEF

Intake door position

REC

20%FRE

FRE

Air mix door position
(driver & passenger
side)

FULL COLD

FULL HOT

FULL COLD

FULL HOT

Blower motor duty ratio

35%

61%

81%

35%

Compressor (Magnet
clutch)

OFF

Upper ventilator door

OPEN

SHUT

OPEN

SHUT

JPIIA0509GB

JPIIA0510GB

INSUFFICIENT COOLING

HAC-235

< SYMPTOM DIAGNOSIS >

[WITH 7 INCH DISPLAY]

HAC

NO-1

>> Air outlet does not change. Refer to

HAC-189, "Diagnosis Procedure"

NO-2

>> Air inlet does not change. Refer to

HAC-192, "Diagnosis Procedure"

NO-3

>> Discharge air temperature does not change. Refer to

HAC-185, "Diagnosis Procedure"

and

HAC-

187, "Diagnosis Procedure"

NO-4

>> Blower motor does not operate normally. Refer to

HAC-196, "Diagnosis Procedure"

NO-5

>> Magnet clutch does not operate. Refer to

HAC-200, "Diagnosis Procedure"

CHECK AMBIENT TEMPERATURE DISPLAY

Check that there is not much difference between actual ambient temperature and indicated temperature on
information display in combination meter.

Is the inspection result normal?

YES

>> GO TO 8.

>> Perform the diagnosis for the A/C auto amp. connection recognition signal. Refer to

MWI-56,

"Diagnosis Procedure"

CHECK DRIVE BELT

Check tension of the drive belt. Refer to

EM-17, "Checking"

Is the inspection result normal?

YES

>> GO TO 9.

>> Adjust or replace drive belt.

CHECK AIR LEAKAGE FROM DUCT

Check duct and nozzle, etc, of the A/C system for air leakage.
Is the inspection result normal?

YES

>> INSPECTION END

>> Repair or replace parts according to the inspection results.

HAC-236

< SYMPTOM DIAGNOSIS >

[WITH 7 INCH DISPLAY]

INSUFFICIENT HEATING

INSUFFICIENT HEATING

Description

INFOID:0000000009722212

Symptom

• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

Inspection procedure

INFOID:0000000009722213

CHECK COOLING SYSTEM

Check engine coolant level and check for leakage. Refer to

CO-11, "Inspection"

Check radiator cap. Refer to

CO-15, "RADIATOR CAP : Inspection"

Check water flow sounds of engine coolant. Refer to

CO-12, "Refilling"

Is the inspection result normal?

YES

>> GO TO 2.

>> Refill the engine coolant and repair or replace the parts according to the inspection results.

CHECK OPERATION

Press temperature dial (driver side) and raise temperature setting to 32

C (90

F) after warming up the

engine.

Check that warm air blows from the outlets.

Is the inspection result normal?

YES

>> INSPECTION END

>> GO TO 3.

CHECK SETTING OF TEMPERATURE SETTING TRIMMER

Using CONSULT, check the setting of “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC. Refer to

HAC-136, "Temperature Setting Trimmer"

Check that the temperature setting trimmer is set to “

−

direction”.

NOTE:
The control temperature can be set by the temperature setting trimmer.

Set temperature control dial to “0”.

Are the malfunction solved?

YES

>> Perform the setting separately if necessary. END.

>> GO TO 4.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT

Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the trouble diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-170, "DTC Logic"

HAC-171, "DTC Logic"

Is any DTC No. displayed?

YES

>> Perform the diagnosis that is applicable to the sensor and the door motor. Refer to

HAC-230,

"DTC Index"

>> GO TO 5.

CHECK WITH ACTIVE TEST OF CONSULT

Using CONSULT, perform “HVAC TEST” in “ACTIVE TEST” of HVAC to check each output device. Refer
to

HAC-166, "CONSULT Function"

NOTE:
Perform the ACTIVE TEST after starting the engine because the compressor is operated.