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