Nissan Murano Z51. Manual - part 868

DIAGNOSIS AND REPAIR WORKFLOW

HAC-127

< BASIC INSPECTION >

[WITH 7 INCH DISPLAY]

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

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OVERALL SEQUENCE

*1: Refer to 

HAC-226, "DTC Index"

.

*2: Refer to 

HAC-228, "Diagnosis Chart By Symptom"

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DETAILED FLOW

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.

>> GO TO 2.

2.

VERIFY SYMPTOM

Verify the symptom with operational check based on the information obtained from the customer. Refer to

HAC-129, "Description & Inspection"

.

>> GO TO 3.

JSIIA0943GB

HAC-128

< BASIC INSPECTION >

[WITH 7 INCH DISPLAY]

DIAGNOSIS AND REPAIR WORKFLOW

3.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

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

HAC-226, "DTC Index"

.

Are self-diagnosis results normal?

YES

>> GO TO 4.

NO

>> GO TO 5.

4.

NARROW DOWN THE MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS

Perform symptom diagnosis and narrow down the malfunctioning parts. Refer to 

HAC-228, "Diagnosis Chart

By Symptom"

.

>> GO TO 5.

5.

REPAIR OR REPLACE

Repair or replace malfunctioning parts.
NOTE:
If DTC is displayed, erase DTC after repairing or replacing malfunctioning parts.

>> GO TO 6.

6.

FINAL CHECK

Check that the A/C system operates normally.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

INSPECTION AND ADJUSTMENT

HAC-129

< BASIC INSPECTION >

[WITH 7 INCH DISPLAY]

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INSPECTION AND ADJUSTMENT

Description & Inspection

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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 dial (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-237, "Inspection procedure"

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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-191, "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-138, "System Description"

. 

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Mode door system malfunction: 

HAC-184, "Diagnosis Procedure"

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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-130

< BASIC INSPECTION >

[WITH 7 INCH DISPLAY]

INSPECTION AND ADJUSTMENT

3.

Check that the air blown from 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-189, "Diagnosis Procedure"

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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 intake door position is at FRE
when the D/F or DEF is selected.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Intake door system malfunction: 

HAC-187, "Diagnosis Procedure"

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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-195, "Diagnosis Procedure"

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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-229, "Inspection procedure"

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8.

CHECK WITH TEMPERATURE SETTING RAISED

1.

Operate the temperature control dial (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-232, "Inspection procedure"

.

JPIIA0509GB