Nissan Maxima. Manual - part 570

EXL-22

< SYSTEM DESCRIPTION >

[XENON TYPE]

COMBINATION SWITCH READING SYSTEM

COMBINATION SWITCH READING FUNCTION

Description

• BCM reads the status of the combination switch at 10ms intervals normally.

NOTE:

BCM reads the status of the combination switch at 60ms intervals when BCM is controlled at low power con-

sumption mode.

• BCM operates as follows and judges the status of the combination switch.

- It operates the transistor on OUTPUT side in the following order: OUTPUT 1 

→ 2 →3 →4 →5 and outputs

voltage waveform.

- The voltage waveform of OUTPUT corresponding to the formed circuit is input into the interface on INPUT

side if any (1 or more) switches are ON.

- It reads this change of the voltage as the status signal of the combination switch.

Operation Example

OUTPUT 4

—

INT VOLUME 3

AUTO LIGHT

—

TAIL LAMP

OUTPUT 5

INT VOLUME 2

—

—

FR FOG

—

System

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

JPMIA0609GB

JMMIA0326GB

COMBINATION SWITCH READING SYSTEM

EXL-23

< SYSTEM DESCRIPTION >

[XENON TYPE]

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In the following operation example, the combination of the status signals of the combination switch is replaced

as follows: INPUT 1 - 5 to “1 - 5” and OUTPUT 1 - 5 to “A - E”.

Example 1: When a switch (TAIL LAMP) is turned ON

• The circuit between OUTPUT 4 and INPUT 5 is formed when the TAIL LAMP is turned ON.

• BCM detects the combination switch status signal “5D” when the signal of OUTPUT 4 is input to INPUT 5.

• BCM judges that the TAIL LAMP switch is ON when the signal “5D” is detected.

Example 2: When some switches (TRUN RH, TAIL LAMP) are turned ON

• The circuits between OUTPUT 1 and INPUT 5 and between OUTPUT 4 and INPUT 5 are formed when the

TURN RH switch and TAIL LAMP switch are turned ON.

• BCM detects the combination switch status signal “5AD” when the signals of OUTPUT 1 and OUTPUT 4 are

input to INPUT 5.

• BCM judges that the TURN RH switch and TAIL LAMP switch are ON when the signal “5AD” is detected.

WIPER INTERMITTENT DIAL POSITION SETTING (FRONT WIPER INTERMITTENT OPERATION)

BCM judges the wiper intermittent dial 1 - 7 by the status of INT VOLUME 1, 2, and 3 switches.

AWMIA1217GB

AWMIA1218GB

EXL-24

< SYSTEM DESCRIPTION >

[XENON TYPE]

COMBINATION SWITCH READING SYSTEM

Wiper intermittent dial posi-

tion

Intermittent oper-

ation delay inter-

val

INT VOLUME switch ON/OFF status  

INT VOLUME 1 switch

INT VOLUME 2 switch

INT VOLUME 3 switch

1

Short

↑

↓

Long

ON

ON

ON

2

ON

ON

OFF

3

ON

OFF

OFF

4

OFF

OFF

OFF

5

OFF

OFF

ON

6

OFF

ON

ON

7

OFF

ON

OFF

DIAGNOSIS SYSTEM (BCM)

EXL-25

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (BCM)

COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000010069548

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

HEADLAMP

Direct Diagnostic Mode

Description

Ecu Identification

The BCM part number is displayed.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

Data Monitor

The BCM input/output signals are displayed.

Active Test

The signals used to activate each device are forcibly supplied from BCM.

Work support

Changes the setting for each system function.

Configuration

• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.

CAN Diag Support Mntr

Monitors the reception status of CAN communication viewed from BCM.

System

Sub System

Direct Diagnostic Mode

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Da

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 Mo

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A

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 T

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W

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Co

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ion

CA

N Diag

 Su

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ort Mn

tr

Door lock

DOOR LOCK

×

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Exterior lamp

HEADLAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps FLASHER

×

×

×

Intelligent Key system

INTELLIGENT KEY

×

×

×

Combination switch

COMB SW

×

BCM

BCM

×

×

×

×

×

Immobilizer

IMMU

×

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Trunk open

TRUNK

×

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×