Nissan Murano. Manual - part 808

HAC-6

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

DIAGNOSIS AND REPAIR WORKFLOW

1.

GET INFORMATION FOR SYMPTOM

1.

Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurs).

2.

Check operation condition of the function that is malfunctioning.

>> GO TO 2.

2.

CHECK DTC

1.

Check DTC.

2.

Perform the following procedure if DTC is detected.

-

Record DTC and freeze frame data (Print them out using CONSULT.)

-

Erase DTC.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

3.

Check related service bulletins for information.

Are any symptoms described and any DTC detected?

Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 5.

3.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

4.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

5.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the detected DTC, and then check that DTC is detected
again. At this time, always connect CONSULT to the vehicle, and check self diagnostic results in real time.
If two or more DTCs are detected, refer to DTC INSPECTION PRIORITY CHART, and determine trouble diag-
nosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service

Manual. This simplified check procedure is an effective alternative though DTC cannot be detected during
this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIR-
MATION PROCEDURE.

Is DTC detected?

YES

>> GO TO 7.

NO

>> Check according to 

GI-44, "Intermittent Incident"

.

6.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptom.

Is the symptom described?

YES

>> GO TO 7.

NO

>> Monitor input data from related sensors or check voltage of related module terminals using CON-

SULT.

7.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

DIAGNOSIS AND REPAIR WORKFLOW

HAC-7

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Inspect according to Diagnosis Procedure of the system.

Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check according to 

GI-44, "Intermittent Incident"

.

8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

9.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

HAC-8

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

INSPECTION AND ADJUSTMENT

INSPECTION AND ADJUSTMENT

Description & Inspection

INFOID:0000000009722025

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-70, "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-16, "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-63, "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

INSPECTION AND ADJUSTMENT

HAC-9

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

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-68, "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-66, "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-74, "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