Infiniti QX56 (Z62). Manual - part 792

AUTOMATIC AIR CONDITIONING SYSTEM

HAC-59

< WIRING DIAGRAM >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

JCIWM0806GB

HAC-60

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000006275891

OVERALL SEQUENCE

DETAILED FLOW

1.

INTERVIEW FOR MALFUNCTION

Interview the symptom to the customer.

JPLIA0313GB

DIAGNOSIS AND REPAIR WORK FLOW

HAC-61

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

>> GO TO 2.

2.

SYMPTOM CHECK

Check the symptom from the customer's information.

>> GO TO 3.

3.

BASIC INSPECTION

Check the operation of each part. Check that any symptom occurs other than the interviewed symptom.

>> GO TO 4.

4.

SELF-DIAGNOSIS WITH CONSULT-III

Perform the self-diagnosis with CONSULT-III. Check that any DTC is detected.
Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 6.

5.

TROUBLE DIAGNOSIS BY DTC

Perform the trouble diagnosis for the detected DTC. Specify the malfunctioning part.

>> GO TO 9.

6.

FAIL-SAFE ACTIVATION CHECK

Check that the symptom is applied to the fail-safe activation.
Does the fail-safe activate?

YES

>> GO TO 7.

NO

>> GO TO 8.

7.

SYSTEM DIAGNOSIS

Perform the system diagnosis for the system that the fail-safe activates. Specify the malfunctioning part.

>> GO TO 9.

8.

SYMPTOM DIAGNOSIS

Perform the symptom diagnosis. Specify the malfunctioning part.

>> GO TO 9.

9.

MALFUNCTION PART REPAIR

Repair or replace the malfunctioning part.

>> GO TO 10.

10.

REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT-III)

Perform the self-diagnosis with CONSULT-III. Check that any DTC is not detected. Erase DTC if DTC is
detected before the repair. Check that DTC is not detected again.

Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 11.

11.

REPAIR CHECK (OPERATION CHECK)

Check the operation of each part.
Does it operate normally?

YES

>> INSPECTION END

NO

>> GO TO 3.

HAC-62

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION INSPECTION

OPERATION INSPECTION

FRONT AUTOMATIC AIR CONDITIONING SYSTEM

FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Work Procedure

INFOID:0000000006275892

DESCRIPTION

The purpose of the operational check is to check that the individual system operates normally.

OPERATION INSPECTION

1.

CHECK MEMORY FUNCTION

1.

Set temperature control dial (driver side) to 32.0

°

C (90

°

F).

2.

Press OFF switch.

3.

Turn ignition switch OFF.

4.

Turn ignition switch ON.

5.

Press AUTO switch.

6.

Check that set temperature is maintained.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 12.

2.

CHECK FRONT BLOWER MOTOR

1.

Start engine.

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 12.

3.

CHECK DISCHARGE AIR (MODE SWITCH AND DEF SWITCH)

1.

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

2.

Operate MODE switch and DEF 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-6, "VENTILATION SYSTEM (FRONT AIR CONDITIONING) : System Description"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 12.

4.

CHECK DISCHRGE AIR (UPPER VENTILATOR SWITCH)

1.

Press MODE switch to set the air outlet to other than D/F or DEF.

2.

Press upper ventilator switch. The upper ventilator switch indicator is turns ON.

3.

Check that air flow blows from upper ventilator.

4.

Press upper ventilator switch again. The upper ventilator switch indicator is turns OFF.

5.

Check that air flow from upper ventilator stops.

Is the inspection result normal?

YES-1 >> With ACCS (advanced climate control system): GO TO 5.
YES-2 >> Without ACCS (advanced climate control system): GO TO 6.
NO

>> GO TO 12.

5.

CHECK INTAKE AIR [WITH ACCS (ADVANCED CLIMATE CONTROL SYSTEM)]

1.

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

2.

Listen to intake sound and confirm air inlets change.

3.

Press intake switch again to set the air inlet to fresh air intake. The intake switch indicator turns OFF.

4.

Listen to intake sound and confirm air inlets change.

Is the inspection result normal?

Check condition

: Engine running at normal operating temperature.