Infiniti FX35, FX50 (S51). Manual - part 1154

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

3.

Press mode switch as desired.

NOTE:
When battery cable is disconnected or battery voltage is below 10 V, trimmer operation is canceled. Air distri-
bution ratio set becomes that of initial condition.

WITH ACCS : Inlet Port Memory Function

INFOID:0000000005246207

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-62, "WITH ACCS : Diagnosis Description"

.

2.

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

3.

Press intake switch as desired.

NOTE:
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 ACCS : Gas Sensor Sensitivity Adjustment Function

INFOID:0000000005246208

DESCRIPTION

According to customer

′

s sense of smell, gas sensor sensitivity can be changed.

Operating procedures for this trimmer are as follows:

1.

Begin self-diagnosis STEP-5 mode. Refer to 

HAC-62, "WITH ACCS : Diagnosis Description"

.

2.

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

3.

Turn temperature control dial (driver side) as desired for the setting.

JSIIA1209GB

AUTO INTAKE 

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

Display

Setting

71

More sensitive setting than display 72 setting (the change to REC is earlier than display 72 operation.)

72

More sensitive setting than normal setting (the change to REC is earlier than normal operation.)

73 (Initial status)

Normal 

HAC-14

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

NOTE:
When battery cable is disconnected or battery voltage is below 10 V, Gas sensor sensitivity adjustment func-
tion is canceled. Gas sensor sensitivity adjustment function set becomes that of initial condition.

WITH ACCS : Auto Intake Interlocking Movement Change Function

INFOID:0000000005246209

DESCRIPTION

Conditions for interlocking movement of intake switch (auto intake mode) and A/C switch can be changed. In
addition, operation of the intake switch, which activates the automatic recirculation control system, can be set
to become available when the A/C switch is ON.

Operating procedures for this trimmer are as follows:

1.

Begin self-diagnosis STEP-5 mode. Refer to 

HAC-62, "WITH ACCS : Diagnosis Description"

.

2.

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

3.

Press A/C switch and intake switch as desired.

NOTE:
When battery cable is disconnected or battery voltage is below 10 V, auto intake interlocking movement
change function is canceled. Auto intake interlocking movement change function set becomes that of initial
condition.

74

Less sensitive setting than normal setting (the change to REC is later than normal operation.)

75

Less sensitive setting than display 74 setting (the change to REC is later than display 74 operation.)

Display

Setting

A/C indicator

AUTO IN-

TAKE indicator

Setting status

ON

ON

A/C switch indicator turns ON automatically when auto intake mode is selected with Intake switch.
Auto intake mode continues after A/C switch turns OFF.

OFF

ON

A/C switch indicator stays OFF when auto intake mode is selected with Intake switch.
Auto intake mode continues after A/C switch turns OFF.

ON

OFF

A/C switch indicator turns ON automatically when auto intake mode is selected with Intake switch.
When A/C switch turns OFF, auto intake mode turns OFF automatically.
(Initial setting)

OFF

OFF

Auto intake mode can be set only when A/C switch is ON.
When A/C switch turns OFF, auto intake mode turns OFF automatically.

COMPRESSOR CONTROL FUNCTION

HAC-15

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

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A

B

HAC

N

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SYSTEM DESCRIPTION

COMPRESSOR CONTROL FUNCTION

WITHOUT ACCS

WITHOUT ACCS : Description

INFOID:0000000005246210

PRINCIPLE OF OPERATION

Compressor is not activated.

Functional circuit diagram

Functional initial inspection chart

WITHOUT ACCS : Fail-safe

INFOID:0000000005246211

FAIL-SAFE FUNCTION

CAN(1) : A/C switch signal

: Blower fan motor switch signal

CAN(2) : A/C compressor request signal

JSIIA0918GB

Control unit

Diagnosis Item

Location

A

B

C

D

Unified meter and A/C amp.

Self-diagnosis function

×

–

–

–

ECM

“ENGINE”

Self-diagnosis
(CAN system diagnosis)

–

–

×

–

Data monitor

×

×

×

–

IPDM E/R

“IPDM E/R”

Self-diagnosis
(CAN system diagnosis)

–

–

–

×

Data monitor

–

–

×

–

Auto active test

–

–

–

×

HAC-16

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONER]

COMPRESSOR CONTROL FUNCTION

• If a communication error exists between the unified meter and A/C amp., and preset switch for 30 seconds

or longer, air conditioner is controlled under the following conditions:

WITHOUT ACCS : Component Part Location

INFOID:0000000005246212

ENGINE COMPARTMENT

Compressor

: ON

Air outlet

: AUTO

Air inlet

: FRE (Fresh)

Blower fan speed

: AUTO

Set temperature

: Setting before communication error occurs