Infiniti QX56 (JA60). Manual - part 587

 

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Infiniti QX56 (JA60). Manual - part 587

 

 

INSPECTION AND ADJUSTMENT

HAC-5

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

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If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for 

HAC-108,

"Component Function Check"

. If air mix door motor appears to be malfunctioning, go to 

HAC-31, "Air Mix Door

Motor (Driver) Component Function Check"

If OK, continue the check.

CHECKING TEMPERATURE INCREASE

1. Rotate temperature control dial clockwise (drive or passenger) until 32

°C (90°F) is displayed.

2. Check for hot air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for 

HAC-116,

"Component Function Check"

. If air mix door motor appears to be malfunctioning, go to 

HAC-31, "Air Mix Door

Motor (Driver) Component Function Check"

.  

If OK, continue with next check.

CHECK A/C SWITCH

1. Press A/C switch when AUTO switch is ON, or in manual mode.
2. A/C switch indicator will turn ON.

• Confirm that the compressor clutch engages (sound or visual inspection).

NOTE:

If current mode setting is DEF or D/F, compressor clutch will already be engaged and cannot be turned off.

If NG, go to trouble diagnosis procedure for 

HAC-68, "Magnet Clutch Diagnosis Procedure"

.

If OK, continue with next check.

CHECKING AUTO MODE

1. Press AUTO switch.
2. Display should indicate AUTO.

• If ambient temperature is warm, and selected temperature is cool, confirm that the compressor clutch

engages (sound or visual inspection). (Discharge air and blower speed will depend on ambient, in-vehi-

cle, and set temperatures.)

If NG, go to trouble diagnosis procedure for 

HAC-87, "A/C Auto Amp Power and Ground Diagnosis Proce-

dure"

, then if necessary, trouble diagnosis procedure for  

HAC-68, "Magnet Clutch Diagnosis Procedure"

.

If all operational checks are OK (symptom cannot be duplicated), go to malfunction Simulation Tests in  

HAC-

3, "How to Perform Trouble Diagnosis For Quick And Accurate Repair"

 and perform tests as outlined to simu-

late driving conditions environment. If symptom appears. Refer to 

HAC-107, "Symptom Matrix Chart"

, and

perform applicable trouble diagnosis procedures.

Operational Check (Rear)

INFOID:0000000005147670

The purpose of the operational check is to confirm that the system operates properly.

CHECKING REAR BLOWER MOTOR

1. Turn the ignition switch ON.
2. Rotate rear air control (front) blower control dial to low speed.
3. Rotate the blower control dial clockwise and continue checking blower speed until all speeds are checked.
4. Leave blower on maximum speed.
5. Press the REAR CTRL switch from the rear air control (front).
6. Rotate rear air control (rear) blower control dial to low speed.
7. Rotate the blower control dial clockwise and continue checking blower speed until all speeds are checked.
8. Leave blower on maximum speed.
If NG, go to trouble diagnosis procedure for 

HAC-53, "Rear Blower Motor Component Function Check"

.

If OK, continue with next check.

CHECKING REAR DISCHARGE AIR

Conditions

: Engine running and at normal operating temperature

HAC-6

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

1. The REAR CTRL indicator must be off. Press each rear air con-

trol (front) mode door switches and confirm the discharge air

comes out relative to the icon on each switch and according to

the air distribution table. Refer to 

HAC-16, "Discharge Air Flow

(Rear)"

.

2. Press the REAR CTRL switch (indicator on) from the rear air

control (front).

3. Press each rear air control (rear) mode door switches and con-

firm the discharge air comes out relative to the icon on each

switch and according to the air distribution table. Refer to 

HAC-

16, "Discharge Air Flow (Rear)"

.

Air mix door position is checked in the next step.

If NG, go to 

HAC-31, "Air Mix Door Motor (Driver) Component Func-

tion Check"

.

If OK, continue with next check.

CHECKING REAR TEMPERATURE DECREASE

1. Press the REAR CTRL switch (indicator off).
2. Rotate the rear air control (front) temperature control dial counterclockwise to maximum cold.
3. Check for cold air at appropriate discharge air outlets.
4. Press the REAR CTRL switch (indicator on) from the rear air control (front).
5. Rotate the rear air control (rear) temperature control dial counterclockwise to maximum cold.
6. Check for cold air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for 

HAC-31,

"Air Mix Door Motor (Driver) Component Function Check"

. If air mix door motor appears to be malfunctioning,

go to 

HAC-59, "Air Mix Door Motor (Rear) Diagnosis Procedure"

.

If OK, continue with next check.

CHECKING REAR TEMPERATURE INCREASE

1. Press the REAR CTRL switch (indicator off).
2. Rotate the rear air control (front) temperature control dial clockwise to maximum heat.
3. Check for hot air at appropriate discharge air outlets.
4. Press the REAR CTRL switch (indictor on) from the rear air control (front).
5. Rotate the rear air control (rear) temperature control dial clockwise to maximum heat.
6. Check for hot air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for 

HAC-31,

"Air Mix Door Motor (Driver) Component Function Check"

. If air mix door motor appears to be malfunctioning,

go to 

HAC-59, "Air Mix Door Motor (Rear) Diagnosis Procedure"

.

If NG, go to trouble diagnosis procedure for 

HAC-116, "Component Function Check"

.

If all operational checks are OK (symptom cannot be duplicated), go to 

HAC-3, "How to Perform Trouble Diag-

nosis For Quick And Accurate Repair"

 and perform tests as outlined. If symptom appears, refer to 

HAC-107,

"Symptom Matrix Chart"

 and perform applicable trouble diagnosis procedures.

WJIA0541E

FUNCTION INFORMATION

HAC-7

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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FUNCTION DIAGNOSIS

FUNCTION INFORMATION

Component Part Location

INFOID:0000000005147671

ENGINE COMPARTMENT

AWIIA1132GB

1.

Water valve F68

2.

Refrigerant pressure sensor E48 

3.

Ambient sensor E1

4.

A/C compressor F3

HAC-8

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

FUNCTION INFORMATION

PASSENGER COMPARTMENT

1.

A/C auto amp. M49, M50

2.

In-vehicle sensor M32

3.

Intake sensor M146

4.

Intake door motor M58

5.

Variable blower control (front) 
M122

6.

Air mix door motor (passenger) M143

7.

Mode door motor (front) M142

8.

Defroster door motor M144

9.

Air mix door motor (driver) M147

10. Optical sensor M302

:Front

AWIIA0567ZZ

 

 

 

 

 

 

 

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