Nissan Murano. Manual - part 835

HAC-114

< SYMPTOM DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

INSUFFICIENT HEATING

6.

CHECK AIR LEAKAGE FROM DUCT

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

YES

>> GO TO 7.

NO

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

7.

CHECK HEATER HOSE INSTALLATION CONDITION

Check the heater hose installation condition visually (for twists, crushes, etc.).

Is the inspection result normal?

YES

>> GO TO 8.

NO

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

8.

CHECK TEMPERATURE OF HEATER HOSE

1.

Check the temperature of inlet hose and outlet hose of heater core.

2.

Check that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the
inlet side.

CAUTION:

Always perform the temperature inspection in a short period of time because the engine coolant
temperature is very hot.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace the heater core after performing the procedures after the cooling system inspection. GO

TO 1.

9.

REPLACE HEATER CORE

Replace the heater core. Refer to heater core. Refer to 

VTL-47, "Exploded View"

.

Are the malfunction solved?

YES

>> INSPECTION END

NO

>> Perform the procedures again after the cooling system inspection. GO TO 1.

NOISE

HAC-115

< SYMPTOM DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

C

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HAC

N

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NOISE

Description

INFOID:0000000009722112

Symptom

• Noise
• Noise is heard when the A/C system operates.

Inspection procedure

INFOID:0000000009722113

1.

CHECK OPERATION

1.

Operate the A/C system and check the operation. Refer to 

HAC-8, "Description & Inspection"

.

2.

Check the parts where noise is occurring.

Can the parts where noise is occurring be checked?

YES-1 >> Noise from blower motor: GO TO 2.
YES-2 >> Noise from compressor: GO TO 3.
YES-3 >> Noise from expansion valve: GO TO 4.
YES-4 >> Noise from A/C piping (pipe, flexible hose): GO TO 6.
YES-5 >> Noise from drive belt: GO TO 7.
NO

>> INSPECTION END

2.

CHECK BLOWER MOTOR

1.

Remove blower motor.

2.

Remove foreign materials that are in the blower unit.

3.

Check the noise from blower motor again.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace blower motor.

3.

CHECK COMPRESSOR

Perform trouble diagnosis for the compressor and check the compressor. Refer to 

HA-11, "Symptom Table"

. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refill the refrigerant or replace the compressor according to the inspection results.

4.

CHECK WITH GAUGE PRESSURE

Perform the diagnosis with the gauge pressure. Refer to 

HA-8, "Trouble Diagnosis For Unusual Pressure"

. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK EXPANSION VALVE

1.

Correct the refrigerant with recovery/recycling recharging equipment.

2.

Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant.

3.

Check for the noise from expansion valve again.

Are the malfunction solved?

YES

>> INSPECTION END

NO

>> Replace expansion valve.

6.

CHECK A/C PIPING (PIPE, FLEXIBLE HOSE)

1.

Check the A/C piping (pipes, flexible hoses) (for deformation and damage, etc.).

2.

Check the installation condition of clips and brackets, etc, of the A/C piping (pipes, flexible hoses).

Is the inspection result normal?

YES

>> Fix the line with rubber or come vibration absorbing material.

NO

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

7.

CHECK DRIVE BELT

HAC-116

< SYMPTOM DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

NOISE

Check tension of the drive belt. Refer to 

EM-17, "Checking"

.

Is the inspection result normal?

YES

>> Check the noise from compressor: GO TO 3.

NO

>> Adjust or replace drive belt according to the inspection results.

MEMORY FUNCTION DOES NOT OPERATE

HAC-117

< SYMPTOM DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

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MEMORY FUNCTION DOES NOT OPERATE

Description

INFOID:0000000009722114

Symptom

• Memory function does not operate normally.
• The setting is not maintained. (It returns to the initial condition.)

Inspection procedure

INFOID:0000000009722115

1.

CHECK OPERATION

1.

Set temperature control switch to 32

°

C (90

°

F).

2.

Press the ON/OFF switch.

3.

Turn the ignition switch OFF.

4.

Turn the ignition switch ON.

5.

Press the AUTO switch.

6.

Check that the set temperature is maintained.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY AND GROUND CIRCUIT OF A/C AUTO AMP.

Check power supply and ground circuit of the A/C auto amp. Refer to 

HAC-77, "A/C AUTO AMP. : Diagnosis

Procedure"

. 

Is the inspection result normal?

YES

>> Replace the A/C auto amp.

NO

>> Repair or replace malfunctioning parts.