Nissan Frontier. Instruction — part 94

BCS

INSPECTION AND ADJUSTMENT

BCS-5

< BASIC INSPECTION >

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CONFIGURATION (BCM) : Configuration List

INFOID:0000000009479177

CAUTION:

Thoroughly read and understand the vehicle specification. Incorrect settings may result in abnormal

control of ECU.

⇔: Items which confirm vehicle specifications

MANUAL SETTING ITEM

Items

Setting value

KEYLESS ENTRY

WITH

⇔ WITHOUT

AUTO LIGHT

WITH

⇔ WITHOUT

DTRL

WITH

⇔ WITHOUT

THEFT ALARM

WITH

⇔ WITHOUT

AUTO DOOR UNLOCK TIMING

A/T

⇔ M/T

BCS-6

< SYSTEM DESCRIPTION >

BODY CONTROL SYSTEM

SYSTEM DESCRIPTION

BODY CONTROL SYSTEM

System Description

INFOID:0000000009479178

OUTLINE

• BCM (Body Control Module) controls the various electrical components. It inputs the information required to

the control from CAN communication and the signal received from each switch and sensor.

• BCM has combination switch reading function for reading the operation status of combination switches (light,

turn signal, wiper and washer) in addition to a function for controlling the operation of various electrical com-

ponents. It also has the signal transmission function as the passed point of signal and the power consump-

tion control function that reduces the power consumption with the ignition switch OFF.

• BCM is equipped with the diagnosis function that performs the diagnosis with CONSULT and various set-

tings.

BCM control function list

Component Parts Location

INFOID:0000000009479179

• BCM M18, M19, M20 (view with lower instrument panel LH

removed)

System

Refer to

Combination switch reading system

BCS-7, "System Diagram"

Signal buffer system

BCS-11, "System Diagram"

Power consumption control system

BCS-12, "System Diagram"

Auto light system (if equipped)

EXL-12, "System Diagram"

Turn signal and hazard warning lamp system

EXL-16, "System Diagram"

Headlamp system

EXL-7, "System Diagram"

Front fog lamp system (if equipped)

EXL-15, "System Diagram"

Daytime running light system (Canada only)

EXL-9, "System Diagram"

Interior room lamp control system

INL-6, "System Diagram"

Interior room lamp battery saver system

INL-6, "System Description"

Front wiper and washer system

WW-4, "System Diagram"

Warning chime system

WCS-4, "WARNING CHIME SYSTEM : System Diagram"

Door lock system (if equipped)

DLK-12, "DOOR LOCK AND UNLOCK SWITCH : System Diagram"

(NATS) Nissan anti-theft system (if equipped)

SEC-8, "System Diagram"

Vehicle security system (if equipped)

SEC-11, "System Diagram"

Remote keyless entry system (if equipped)

DLK-14, "REMOTE KEYLESS ENTRY : System Diagram"

Power window system (if equipped)

PWC-4, "System Diagram"

RAP (retained accessory power) system

PWC-4, "System Description"

TPMS (tire pressure monitoring system)

WT-9, "System Diagram"

LKIA0564E

BCS

COMBINATION SWITCH READING SYSTEM

BCS-7

< SYSTEM DESCRIPTION >

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COMBINATION SWITCH READING SYSTEM

System Diagram

INFOID:0000000009479180

System Description

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OUTLINE

• BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the

status of each switch.

• BCM has a combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5) and reads

a maximum of 20 switch states.

COMBINATION SWITCH MATRIX

Combination switch circuit

Combination switch INPUT-OUTPUT system list

AWMIA1243GB

System

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

OUTPUT 1

—

FR WASHER

FR WIPER LOW

TURN LH

TURN RH

OUTPUT 2

FR WIPER HI

—

FR WIPER INT

PASSING

HEADLAMP 1

OUTPUT 3

INT VOLUME 1

—

—

HEADLAMP 2

HI BEAM

AWMIA1244GB

BCS-8

< SYSTEM DESCRIPTION >

COMBINATION SWITCH READING SYSTEM

COMBINATION SWITCH READING FUNCTION

Description

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

NOTE:

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

consumption control 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

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

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