Nissan Altima HL32 Hybrid. Manual - part 500

DIAGNOSIS SYSTEM (AUTO AMP.)

HAC-21

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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HAC

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ACTIVE TEST MODE

Test Item

ALL SEG

HVAC TEST

Refer to the following chart and check discharge air flow, air temperature, blower motor duty ratio, compressor

operation, heater pump operation and engine operation.

CAUTION:

Complete this inspection within 10 seconds if there is no water in the heater pump.

Test Item

Operation

Description

ALL SEG

Off

Checks LEDs illumination and display of auto amp.

On

JPIIA0001ZZ

1.

LEDs

2.

Display

Test Item

Operation

Description

HVAC TEST

MODE 0 

(Off)

Checks discharge air flow, air temperature, blower motor duty ratio, compressor oper-
ation, heater pump operation and engine operation.

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

Operation

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

Mode door position

VENT

B/L 1

B/L 2

FOOT

D/F

DEF

—

Intake door position

FRE

20% FRE

20% FRE

FRE

FRE

FRE

—

Air mix door (driver 
side) position

FULL COOL

FULL COOL

FULL HOT

FULL HOT

FULL HOT

FULL HOT

—

Air mix door (passen-
ger side) position

FULL COOL

FULL COOL

FULL HOT

FULL HOT

FULL HOT

FULL HOT

—

Blower motor duty ratio

47%

59%

59%

87%

87%

59%

OFF

Compressor

2,000 rpm

4,500 rpm

OFF

OFF

OFF

4,500 rpm

OFF

Heater pump

OFF

OFF

ON

ON

ON

ON

ON

Engine ON request

OFF

OFF

OFF

OFF

ON

OFF

OFF

HAC-22

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

DIAGNOSIS SYSTEM (AUTO AMP.)

Checks must be made visually, by listening the sound, or by touching air outlets with hand, etc. for improper

operation.

JPIIA0232GB

DIAGNOSIS SYSTEM (BCM)

HAC-23

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

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A

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HAC

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DIAGNOSIS SYSTEM (BCM)

COMMON ITEM
COMMON ITEM : CONSULT-III Function

INFOID:0000000004215302

ECU IDENTIFICATION

Displays the BCM part No.

SELF-DIAG RESULT

Refer to 

BCS-81, "DTC Index"

.

AIR CONDITIONER
AIR CONDITIONER : CONSULT-III Function (BCM - AUTO AIR CONDITIONER)

INFOID:0000000004215303

DATA MONITOR

Display Item List

Monitor Item [Unit]

Contents

IGN SW

[On/Off]

Display [ignition switch position (On)/(Off), ACC position (Off)] status as judged form ignition 
switch signal.

FAN ON SIG

[On/Off]

Display [FAN (On)/FAN (Off)] status as judged form blower fan motor switch signal.

AIR COND SW

[On/Off]

Display [COMP (On)/COMP (Off)] status as judged form air conditioner switch signal.

HAC-24

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MODE DOOR CONTROL SYSTEM

MODE DOOR CONTROL SYSTEM

Description

INFOID:0000000004215304

SYSTEM DESCRIPTION

Component Parts

Mode door control system components are:

• Auto amp.

• Mode door motor (LCU)

• A/C LAN system (PBR built-in mode door motor, air mix door motor and intake door motor)

• In-vehicle sensor

• Ambient sensor

• Sunload sensor

• Intake sensor

System Operation

• The auto amp. receives data from each of the sensors.

• The auto amp. sends air mix door, mode door and intake door opening angle data to the air mix door motor

LCUs, mode door motor LCU and intake door motor LCU.

• The air mix door motors, mode door motor and intake door motor read their respective signals according to

the address signal. Opening angle indication signals received from the auto amp. and each of the motor

position sensors are compared by the LCUs in each door motor with the existing decision and opening

angles.

• Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection data are

returned to the auto amp.

JPIIA0017GB