Infiniti EX35. Manual - part 904

HAC-12

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

Without rear ventilation

With rear ventilation

If NG, go to trouble diagnosis procedure for 

HAC-70, "Diagnosis Procedure"

.

If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at FRE
when the D/F or DEF is selected.

Intake Air

1.

Press intake switch. REC indicator turns ON.

2.

Press intake switch again. FRE indicator turns ON.

3.

Listen for intake door position change. (Slight change of blower sound can be heard.)

If NG, go to trouble diagnosis procedure for 

HAC-78, "Diagnosis Procedure"

.

If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at FRE
when the D/F or DEF is selected.

A/C Switch

1.

Press A/C switch.

2.

A/C switch indicator turns ON.
• Confirm that the compressor clutch engages (sound or visual inspection).

If NG, go to trouble diagnosis procedure for 

HAC-88, "Diagnosis Procedure"

.

If OK, continue the check.

Temperature Decrease

1.

Turn temperature control dial (driver side) counterclockwise until 18

°

C (60

°

F) is displayed.

2.

Check for cool air at discharge air outlets.

JSIIA0866GB

JSIIA0888GB

INSPECTION AND ADJUSTMENT

HAC-13

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

If NG, go to trouble diagnosis procedure for 

HAC-134, "Inspection procedure"

.

If OK, continue the check.

Temperature Increase

1.

Turn temperature control dial (driver side) clockwise until 32

°

C (90

°

F) is displayed.

2.

Check for hot air at discharge air outlets.

If NG, go to trouble diagnosis procedure for 

HAC-137, "Inspection procedure"

.

If OK, continue the check.

Auto Mode

1.

Press AUTO switch.

2.

Display should indicate AUTO.
• Confirm that discharge air and blower speed depend on ambient, in-vehicle, and set temperatures.

If NG, go to trouble diagnosis procedure for 

HAC-104, "Diagnosis Procedure"

, then if necessary, trouble diag-

nosis procedure for 

HAC-88, "Diagnosis Procedure"

.

Go to Incident Simulation Tests in 

GI-34, "Work Flow"

 and perform tests as outlined to simulate driving condi-

tions environment if all operational checks are OK (symptom cannot be duplicated). Refer to 

HAC-132, "Diag-

nosis Chart By Symptom"

 and perform applicable trouble diagnosis procedures if symptom appears.

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Temperature Setting Trimmer

INFOID:0000000003545565

DESCRIPTION

The trimmer compensates for differences in range of 

±

3

°

C (

±

6

°

F) between temperature setting (displayed dig-

itally) and temperature felt by customer.

Operating procedures for this trimmer are as per the following:

1.

Begin self-diagnosis STEP-5 mode. Refer to 

HAC-63, "WITH LEFT AND RIGHT VENTILATION TEM-

PERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"

.

2.

Press fan (UP: +) switch to set system in auxiliary mode.

3.

Display shows “61” in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation.

4.

Turn temperature control dial (driver side) as desired. Temperature will change at a rate of 0.5

°

C (1.0

°

F)

each time a dial is turned.

CAUTION:

HAC-14

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

A decimal point is not indicated on the display.

When battery cable is disconnected or battery voltage is below 10 V, trimmer operation is canceled. Tempera-
ture set becomes that of initial condition, i.e. 0

°

C (0

°

F).

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Foot Position Setting Trimmer

INFOID:0000000003545566

DESCRIPTION

Wind distribution ratio in FOOT mode can be set.

Operating procedures for this trimmer are as per the following:

1.

Begin self-diagnosis STEP-5 mode. Refer to 

HAC-63, "WITH LEFT AND RIGHT VENTILATION TEM-

PERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"

.

2.

Press fan (UP:+) switch to set system in auxiliary mode.

3.

Press mode switch as desired.

JSIIA1057GB

INSPECTION AND ADJUSTMENT

HAC-15

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Without rear ventilation

With rear ventilation

When battery cable is disconnected or battery voltage is below 10 V, trimmer operation is canceled. Wind dis-
tribution ratio set becomes that of initial condition.

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Inlet Port Memory Function

INFOID:0000000003545567

DESCRIPTION

When ignition switch is turned from OFF to ON, inlet port can be set to AUTO or manual.

Operating procedures for this trimmer are as per the following:

1.

Begin self-diagnosis STEP-5 mode. Refer to 

HAC-63, "WITH LEFT AND RIGHT VENTILATION TEM-

PERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"

.

2.

Press fan (UP:+) switch to set system in auxiliary mode.

3.

Press intake switch as desired.

JSIIA0864GB

JSIIA0894GB