Infiniti QX56 (Z62). Manual - part 793

OPERATION INSPECTION

HAC-63

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

YES

>> GO TO 7.

NO

>> GO TO 12.

6.

CHECK INTAKE AIR [WITHOUT ACCS (ADVANCED CLIMATE CONTROL SYSTEM)]

1.

Press REC switch to set the air inlet to recirculation. The REC switch indicator turns ON.

2.

Listen to intake sound and confirm air inlets change.

3.

Press FRE switch to set the air inlet to fresh air intake. The REC switch indicator turns OFF and FRE
switch indicator turns ON.

4.

Listen to intake sound and confirm air inlets change.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 12.

7.

CHECK COMPRESSOR

1.

Press A/C switch. The A/C switch indicator is turns ON.

2.

Check visually and by sound that the compressor operates.

3.

Press A/C switch again. The A/C switch indicator is turns OFF.

4.

Check that compressor stops.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 12.

8.

CHECK DISCHARGE AIR TEMPERATURE (LH/RH INDEPENDENT TEMERATURE ADJUSTMENT

FUNCTION)

1.

Operate temperature control dial (driver side).

2.

Check that discharge air temperature (driver side) changes.

3.

Operate temperature control dial (passenger side). The DUAL switch indicator is turns ON.

4.

Check that the discharge air temperature (passenger side) changes.

5.

Press DUAL switch. The DUAL switch indicator is turns OFF.

6.

Check that air temperature setting (LH/RH) is unified to the driver side temperature setting.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 12.

9.

CHECK WITH TEMPERATURE SETTING LOWERED

1.

Operate compressor.

2.

Operate temperature control dial (driver side) and lower the set temperature to 18

°

C (60

°

F).

3.

Check that cool air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 12.

10.

CHECK TEMPERATURE INCREASE

1.

Operate temperature control dial (driver side) and raise the set temperature to 32

°

C (90

°

F).

2.

Check that warm air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 12.

11.

CHECK AUTO MODE

1.

Press AUTO switch to confirm that “AUTO” is indicated on the display.

2.

Operate temperature control dial (driver side) to check that fan speed or air outlet changes (the air outlet
or fan speed varies depending on the ambient temperature, in-vehicle temperature (front side), set tem-
perature, and etc.).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 12.

HAC-64

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION INSPECTION

12.

CHECK SELF-DIAGNOSIS WITH CONSULT-III

1.

Perform self-diagnosis with CONSULT-III.

2.

Check that any DTC is detected.

Is any DTC detected?

YES

>> Refer to 

HAC-45, "DTC Index"

 and perform the appropriate diagnosis.

NO

>> GO TO 13.

13.

CHECK FAIL-SAFE ACTIVATION

Check that symptom is applied to the fail-safe activation. Refer to 

HAC-45, "Fail-safe"

.

>> Refer to 

HAC-133, "Diagnosis Chart By Symptom"

 and perform the appropriate diagnosis.

REAR AUTOMATIC AIR CONDITIONING SYSTEM

REAR AUTOMATIC AIR CONDITIONING SYSTEM : Work Procedure

INFOID:0000000006275893

DESCRIPTION

The purpose of the operational check is to check that the individual system operates normally. 
NOTE:
Check that front automatic air conditioning system operates normally. Refer to 

HAC-133, "Diagnosis Chart By

Symptom"

.

OPERATION INSPECTION

Front A/C Control Operation

1.

CHECK REAR CONTROL MODE FUNCTION

1.

Press REAR switch. The REAR switch indicator turns ON.

2.

Check that front display changes to state indication display (rear control mode) and that rear automatic air
conditioning system starts.

3.

Press REAR switch again. The REAR switch indicator turns OFF.

4.

Check that rear control mode released. (rear automatic air conditioning system operates continuously)

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 8.

2.

CHECK REAR BLOWER MOTOR

1.

Press REAR switch.

2.

Operate fan switch.

3.

Check that fan speed changes. Check operation for all fan speeds.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 8.

3.

CHECK DISCHARGE AIR

1.

Operate fan switch to set the fan speed to maximum speed.

2.

Operate MODE switch.

3.

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

VTL-7, "VENTILATION SYSTEM (REAR AIR CONDITIONING) : System Description"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 8.

4.

CHECK DISCHARGE AIR TEMPERATURE

1.

Operate temperature control dial (driver side).

Check condition

: Engine running at normal operating temperature.
: Front air conditioning system operate.

OPERATION INSPECTION

HAC-65

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

2.

Check that discharge air temperature changes.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 8.

5.

CHECK WITH TEMPERATURE SETTING LOWERED

1.

Operate temperature control dial (driver side) and lower the set temperature to 18

°

C (60

°

F).

2.

Check that cool air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 8.

6.

CHECK TEMPERATURE INCREASE

1.

Operate temperature control dial (driver side) and raise the set temperature to 32

°

C (90

°

F).

2.

Check that warm air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 8.

7.

CHECK AUTO MODE

1.

Press AUTO switch.

2.

Operate temperature control dial (driver side) to check that fan speed or air outlet changes (the air outlet
or fan speed varies depending on the ambient temperature, in-vehicle temperature (rear side), set tem-
perature, and etc.).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 8.

8.

CHECK SELF-DIAGNOSIS WITH CONSULT-III

1.

Perform self-diagnosis with CONSULT-III.

2.

Check that any DTC is detected.

Is any DTC detected?

YES

>> Refer to 

HAC-45, "DTC Index"

 and perform the appropriate diagnosis.

NO

>> Refer to 

HAC-135, "Diagnosis Chart By Symptom"

 and perform the appropriate diagnosis.

Rear A/C Control Operation

1.

CHECK REAR BLOWER MOTOR

1.

Press AUTO switch.

2.

Operate fan switch.

3.

Check that fan speed changes. Check operation for all fan speeds.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 7.

2.

CHECK DISCHARGE AIR

1.

Operate fan switch to set the fan speed to maximum speed.

2.

Operate MODE switch.

3.

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

VTL-7, "VENTILATION SYSTEM (REAR AIR CONDITIONING) : System Description"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 7.

3.

CHECK DISCHARGE AIR TEMPERATURE

1.

Operate temperature control switch.

2.

Check that discharge air temperature changes.

Is the inspection result normal?

HAC-66

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION INSPECTION

YES

>> GO TO 4.

NO

>> GO TO 7.

4.

CHECK WITH TEMPERATURE SETTING LOWERED

1.

Operate temperature control switch and lower the set temperature to 18

°

C.

2.

Check that cool air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 7.

5.

CHECK TEMPERATURE INCREASE

1.

Operate temperature control switch and raise the set temperature to 32

°

C.

2.

Check that warm air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 7.

6.

CHECK AUTO MODE

1.

Press AUTO switch.

2.

Operate temperature control switch to check that fan speed or air outlet changes (the air outlet or fan
speed varies depending on the ambient temperature, in-vehicle temperature (rear side), set temperature,
and etc.).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 7.

7.

CHECK SELF-DIAGNOSIS WITH CONSULT-III

1.

Perform self-diagnosis with CONSULT-III.

2.

Check that any DTC is detected.

Is any DTC detected?

YES

>> Refer to 

HAC-45, "DTC Index"

 and perform the appropriate diagnosis.

NO

>> Refer to 

HAC-135, "Diagnosis Chart By Symptom"

 and perform the appropriate diagnosis.

ACCS (ADVANCED CLIMATE CONTROL SYSTEM)

ACCS (ADVANCED CLIMATE CONTROL SYSTEM) : Work Procedure

INFOID:0000000006275894

DESCRIPTION

The purpose of the operational check is to check that the individual system operates normally.
NOTE:
Check that front automatic air conditioning system operates normally. Refer to 

HAC-62, "FRONT AUTOMATIC

AIR CONDITIONING SYSTEM : Work Procedure"

.

OPERATION INSPECTION

1.

CHECK PLASMACLUSTER

™

 CONTROL

Check the ionizer operation sound (whirring sound) in the duct by putting an ear to the center ventilator grille
(driver side) outlet while pressing fan switch and OFF switch alternately.
NOTE:
• Plasmacluster

™

 ion technology developed by Sharp Corporation is installed in this item.

• Plasmacluster

™

 is a trademark of Sharp Corporation.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK PLASMACLUSTER

™

 CONTROL OPERATION STATUS

Check condition

: Engine running