Infiniti FX35, FX50 (S51). Manual - part 1153

INSPECTION AND ADJUSTMENT

HAC-9

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

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2.

Turn temperature control dial (driver side) clockwise until 32.0

°

C (90

°

F) is displayed.

3.

Press the OFF switch.

4.

Turn the ignition switch OFF.

5.

Turn the ignition switch ON.

6.

Press the AUTO switch.

7.

Check that the temperature setting before turning the ignition switch OFF is stored. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Memory function malfunction: 

HAC-162, "Inspection procedure"

.

2.

CHECK BLOWER MOTOR SPEED

1.

Start the engine.

2.

Press fan (UP: +) switch. Check that the fan speed changes. Check the operation for all fan speeds.

3.

Set the fan speed to max speed.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Blower motor system malfunction: 

HAC-80, "Diagnosis Procedure"

.

3.

CHECK DISCHARGE AIR

1.

Press the MODE switch and the DEF switch.

2.

Each position indicator should change shape.

3.

Confirm that discharge air comes out according to the air distribution table as follows:

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Mode door system malfunction: 

HAC-70, "Diagnosis Procedure"

.

4.

CHECK INTAKE AIR

1.

Press AUTO switch. AUTO INTAKE indicator and REC indicator turns ON (auto intake mode).

2.

Press intake switch. AUTO INTAKE indicator and REC indicator turns OFF (fixed FRE mode).

3.

Press intake switch again. REC indicator turns ON (fixed REC mode).

4.

Press intake switch again. AUTO INTAKE indicator and REC indicator turns ON (auto intake mode).

5.

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

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Intake door system malfunction: 

HAC-78, "WITH ACCS : Diagnosis Procedure"

.

5.

CHECK A/C SWITCH

JSIIA1208GB

HAC-10

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

1.

Press the A/C switch.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Magnet clutch system malfunction: 

HAC-84, "Diagnosis Procedure"

.

6.

CHECK WITH TEMPERATURE SETTING LOWERED

1.

Turn temperature control dial (driver side) counterclockwise until 18.0

°

C (60

°

F) is displayed.

2.

Check that the cool air blows from the outlets. 

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Insufficient cooling: 

HAC-155, "Inspection procedure"

.

7.

CHECK WITH TEMPERATURE SETTING RAISED

1.

Turn temperature control dial (driver side) clockwise until 32.0

°

C (90

°

F) is displayed.

2.

Check that the warm air blows from the outlets.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Insufficient heating: 

HAC-157, "Inspection procedure"

.

8.

CHECK LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM FUNC-

TION

1.

Press the DUAL switch, and then check that “DUAL” is shown on the display. 

2.

Operate temperature control dial (driver side). Check that the discharge air temperature (driver side)
changes. 

3.

Operate the temperature control dial (passenger side). Check that the discharge air temperature (passen-
ger side) changes. 

4.

Press the DUAL switch, and then check that the temperature setting (LH/RH) is unified to the driver side
temperature setting. 

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Refer to 

HAC-154, "Diagnosis Chart By Symptom"

 and perform the appropriate diagnosis. 

9.

CHECK AUTO MODE

1.

Press the AUTO switch, and then check that “AUTO” is shown on the display. 

2.

Check that the discharge air and blower speed depend on ambient temperature, in-vehicle temperature
and temperature setting.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Refer to 

HAC-154, "Diagnosis Chart By Symptom"

 and perform the appropriate diagnosis. 

10.

CHECK PLASMACLUSTER ION CONTROL FUNCTION

1.

Turn ignition switch OFF and restart the engine.

2.

Ion indicator is shown on the display.

3.

Press OFF switch.

4.

Ion indicator is turned OFF.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Refer to 

HAC-102, "Diagnosis Procedure"

.

11.

CHECK ION CONTROL MODE

1.

Turn ignition switch OFF and restart the engine.

2.

Operate fan control dial to the blower fan lowest and highest speed. Check display of ion indicator each
time blower fan is at lowest speed and at highest speed.

INSPECTION AND ADJUSTMENT

HAC-11

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace unified meter and A/C amp.

WITH ACCS : Temperature Setting Trimmer

INFOID:0000000005246205

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-62, "WITH ACCS : 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:

When blower fan speed is at lowest speed:

CLEAN

When blower fan speed is at highest speed:

QUICK CLEAN

HAC-12

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

A decimal point is not indicated on the display.

NOTE:
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 ACCS : Foot Position Setting Trimmer

INFOID:0000000005246206

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-62, "WITH ACCS : Diagnosis Description"

.

2.

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

JSIIA1210GB