Nissan Titan A60. Manual - part 606

MANUAL AIR CONDITIONER SYSTEM

HAC-107

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[MANUAL A/C (TYPE 1)]

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MANUAL AIR CONDITIONER SYSTEM

Control System Diagram

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CONTROL SYSTEM

The control system consists of input sensors, switches, the front air control (microcomputer) and outputs.

The relationship of these components is shown in the figure below:

Control System Description

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CONTROL OPERATION

Front air control

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< SYSTEM DESCRIPTION >

[MANUAL A/C (TYPE 1)]

MANUAL AIR CONDITIONER SYSTEM

TEMPERATURE CONTROL DIAL

Increases or decreases the set temperature.

RECIRCULATION (

) SWITCH

• When REC switch is ON, REC switch indicator turns ON, and air inlet is set to REC.

• When REC switch is turned OFF, or when compressor is turned from ON to OFF, REC switch is automati-

cally turned OFF. REC mode can be re-entered by pressing REC switch again.

• REC switch is not operated when DEF switch is turned ON, at the D/F position, or in floor position.

DEFROSTER (

) SWITCH

Positions the air outlet doors to the defrost position. Also positions the intake doors to the outside air position,

and turns A/C compressor ON.

REAR WINDOW DEFOGGER SWITCH (IF EQUIPPED)

When switch is ON, rear window and door mirrors are defogged.

OFF SWITCH

The compressor and blower are OFF, the intake doors are set to the outside air position, and the air outlet

doors are set to the foot (75% foot and 25% defrost) position.

BLOWER CONTROL DIAL/OFF SWITCH

• The blower speed is manually controlled with this dial.

• The compressor and blower are OFF, the intake doors are set to the outside air position, and the air outlet

doors are set to the foot position.

A/C SWITCH

The compressor is ON or OFF.

(Pressing the A/C switch when the AUTO switch is ON will turn off the A/C switch and compressor.)

MODE SWITCHES

Controls the air discharge outlets.

MAGNET CLUTCH CONTROL

When A/C switch or DEF switch is pressed, front air control inputs compressor ON signal to BCM.

BCM sends compressor ON signal to ECM and front air control, via CAN communication line.

ECM judges whether compressor can be turned ON, based on each sensor status (refrigerant pressure sen-

sor signal, throttle angle sensor, etc.). If it judges compressor can be turned ON, it sends compressor ON sig-

nal to IPDM E/R, via CAN communication line.

Upon receipt of compressor ON signal from ECM, IPDM E/R turns air conditioner relay ON to operate com-

pressor.

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MANUAL AIR CONDITIONER SYSTEM

HAC-109

< SYSTEM DESCRIPTION >

[MANUAL A/C (TYPE 1)]

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Discharge Air Flow

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Switches And Their Control Function

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Mode door position

Air outlet/distribution

Vent

Foot

Defroster

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5%

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60%

40%

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70%

30%

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60%

40%

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10%

90%

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[MANUAL A/C (TYPE 1)]

MANUAL AIR CONDITIONER SYSTEM

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