Infiniti EX35. Manual - part 903

HAC-8

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

If NG, go to trouble diagnosis procedure for 

HAC-134, "Inspection procedure"

.

If OK, continue the check.

Temperature Increase

1.

Turn temperature control dial clockwise until 32

°

C (90

°

F) is displayed.

2.

Check for warm 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.

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM : Temperature Setting Trimmer

INFOID:0000000003545561

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-57, "WITHOUT LEFT AND RIGHT VENTILATION

TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"

.

2.

Turn fan control dial clockwise 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 as desired. Temperature will change at a rate of 0.5

°

C (1.0

°

F) each time a

dial is turned.

CAUTION:

INSPECTION AND ADJUSTMENT

HAC-9

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

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).

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM : Foot Position Setting Trimmer

INFOID:0000000003545562

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-57, "WITHOUT LEFT AND RIGHT VENTILATION

TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"

.

2.

Turn fan control dial clockwise to set system in auxiliary mode.

3.

Press each mode switch as desired.

JSIIA1056GB

HAC-10

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

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.

WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM : Inlet Port Memory Function

INFOID:0000000003545563

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-57, "WITHOUT LEFT AND RIGHT VENTILATION

TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"

.

2.

Turn fan control dial clockwise to set system in auxiliary mode.

3.

Press intake switch as desired.

JSIIA0864GB

JSIIA0894GB

INSPECTION AND ADJUSTMENT

HAC-11

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

When battery cable is disconnected or battery voltage is below 10 V, memory function is canceled. Memory
function set becomes that of initial condition.

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM

WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL 
SYSTEM : Description & Inspection

INFOID:0000000003545564

DESCRIPTION

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

INSPECTION PROCEDURE

Memory Function

1.

Turn temperature control dial (driver side) clockwise until 32

°

C (90

°

F) is displayed.

2.

Press OFF switch.

3.

Turn ignition switch OFF.

4.

Turn ignition switch ON.

5.

Press AUTO switch.

6.

Confirm that the set temperature remains at previous temperature.

7.

Press OFF switch.

If NG, go to trouble diagnosis procedure for 

HAC-142, "Inspection procedure"

.

If OK, continue the check.

Blower

1.

Press fan (UP:+) switch. Blower should operate on low speed. The fan symbol should have one blade lit.

2.

Press fan (UP:+) switch again, and continue checking blower speed and fan symbol until all speeds are
checked.

3.

Leave blower on max. speed.

If NG, go to trouble diagnosis procedure for 

HAC-84, "WITH LEFT AND RIGHT VENTILATION TEMPERA-

TURE SEPARATELY CONTROL SYSTEM : Diagnosis Procedure"

.

If OK, continue the check.

Discharge Air

1.

Press MODE switch and DEF switch.

2.

Each position indicator should change shape.

3.

Confirm that discharge air comes out according to the air distribution table. Refer to 

HAC-35, "WITH LEFT

AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : System Description"

.

FRE indicator

REC indicator

Setting status

Setting changeover 

method

FRE

REC

OFF

ON

AUTO control (Initial setting)

Manual REC status is memorized. 
(Initial setting)

Intake switch: ON

ON

ON

Manual FRE status is memorized.

Manual REC status is memorized.

ON

OFF

Manual FRE status is memorized.

AUTO control

OFF

OFF

AUTO control

AUTO control

Conditions

: Engine running at normal operating temperature