Nissan Leaf. Manual - part 153

 

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Nissan Leaf. Manual - part 153

 

 

BCS-6

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

BODY CONTROL SYSTEM
BODY CONTROL SYSTEM : System Description

INFOID:0000000010122302

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 saving con-

trol function that reduces the power consumption with the power switch OFF.

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

tings.

BCM CONTROL FUNCTION LIST

System

Reference

Combination switch reading system

BCS-8, "COMBINATION SWITCH READING SYSTEM : System 
Description"

Signal buffer system

BCS-11, "SIGNAL BUFFER SYSTEM : System Description"

Power consumption control system

BCS-12, "POWER CONSUMPTION CONTROL SYSTEM : Sys-
tem Description"

Headlamp system

EXL-14, "HEADLAMP SYSTEM : System Description"

Auto light system

EXL-15, "AUTO LIGHT SYSTEM (EXCEPT FOR CANADA) : 
System Description"

Daytime running light system

EXL-18, "DAYTIME RUNNING LIGHT SYSTEM : System De-
scription"

Turn signal and hazard warning lamp system

EXL-19, "TURN SIGNAL AND HAZARD WARNING LAMP SYS-
TEM : System Description"

Parking, license plate, side marker and tail lamps system

EXL-20, "PARKING, LICENSE PLATE, SIDE MARKER AND 
TAIL LAMP SYSTEM : System Description"

Front fog lamp system

EXL-21, "FRONT FOG LAMP SYSTEM : System Description"

Exterior lamp battery saver system

EXL-22, "EXTERIOR LAMP BATTERY SAVER SYSTEM : Sys-
tem Description"

Interior room lamp control system

INL-8, "INTERIOR ROOM LAMP CONTROL SYSTEM : System 
Description"

Interior room lamp battery saver system

INL-10, "INTERIOR ROOM LAMP BATTERY SAVER SYSTEM : 
System Description"

Front wiper and washer system

WW-8, "FRONT WIPER AND WASHER SYSTEM : System De-
scription"

Rear wiper and washer system

WW-11, "REAR WIPER AND WASHER SYSTEM : System De-
scription"

Warning chime system

WCS-6, "WARNING CHIME SYSTEM : System Description"

Power door lock system

DLK-22, "System Description"

Intelligent Key system

DLK-24, "INTELLIGENT KEY SYSTEM : System Description"

 

Back door opener system

DLK-35, "System Description"

Nissan Vehicle Immobilizer System (NVIS) - NATS

SEC-15, "NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS : 
System Description"

Vehicle security system

SEC-18, "VEHICLE SECURITY SYSTEM : System Descrip-
tion (Except for Canada)"

SEC-21, "VEHICLE SECURITY SYSTEM : System Descrip-
tion (For Canada)"

Rear window defogger system

DEF-7, "System Description"

BCS

SYSTEM

BCS-7

< SYSTEM DESCRIPTION >

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BODY CONTROL SYSTEM : Fail-safe

INFOID:0000000010563538

FAIL-SAFE CONTROL BY DTC

BCM performs fail-safe control when any DTC are detected.

*: “ECM” is indicated on CONSULT display, however this means VCM on this vehicle.

REAR WIPER MOTOR PROTECTION

BCM detects the rear wiper stopping position according to the rear wiper stop position signal.

When the rear wiper stop position signal does not change for more than 5 seconds while driving the rear

wiper, BCM stops power supply to protect the rear wiper motor.

Condition of cancellation

1. More than 1 minute is passed after the rear wiper stop.

2. Turn rear wiper switch OFF.

3. Operate the rear wiper switch or rear washer switch.

FAIL-SAFE CONTROL OF COMBINATION SWITCH READING FUNCTION CAUSED BY LOW
POWER SUPPLY VOLTAGE

If voltage of battery power supply lower, BCM maintains combination switch reading to the status when input

voltage is less than approximately 9 V.

NOTE:

When voltage of battery power supply is approximately 9 V or more, combination switch reading function

returns to normal operation.

COMBINATION SWITCH READING SYSTEM

Power window system [Retained accessory power (RAP function)]

PWC-8, "System Description"

Tire pressure monitoring system

WT-10, "System Description"

System

Reference

Display contents of CONSULT

Fail-safe

Cancellation

B2192: ID DISCORD BCM-ECM*

Inhibit setting the vehi-
cle to READY

Erase DTC

B2193: CHAIN OF BCM-ECM*

Inhibit setting the vehi-
cle to READY

Erase DTC

B2195: ANTI-SCANNING

Inhibit setting the vehi-
cle to READY

Power switch ON 

→ OFF

B2196: DONGLE NG

Inhibit setting the vehi-
cle to READY

Erase DTC

B2198: IMMOBI ANT NG

Inhibit setting the vehi-
cle to READY

Erase DTC

B261E: FUEL MIS CONFIG

Inhibit setting the vehi-
cle to READY

When the VCM status signal is normally received from VCM.

B26F1: IGN RELAY OFF STUCK

Inhibit setting the vehi-
cle to READY

When the following conditions are fulfilled
• Power switch ON signal (CAN: Transmitted from BCM): ON
• Power switch ON signal (CAN: Transmitted from IPDM E/R): ON

B26F2: IGN RELAY ON STUCK

Inhibit setting the vehi-
cle to READY

When the following conditions are fulfilled
• Power switch ON signal (CAN: Transmitted from BCM): OFF
• Power switch ON signal (CAN: Transmitted from IPDM E/R): OFF

B26F7: LF DRIVER COMMUNI-
CATION

Inhibit setting the vehi-
cle to READY

When inside key antennas function normally

U0415: VDC CAN CIRC2

Inhibit setting the vehi-
cle to READY

When vehicle speed signal (Meter) (CAN) is received normally

BCS-8

< SYSTEM DESCRIPTION >

SYSTEM

COMBINATION SWITCH READING SYSTEM : System Description

INFOID:0000000010122304

SYSTEM DIAGRAM

NOTE:

*: TAIL LAMP switch links lighting switch 1ST and 2ND positions.

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). It reads a

maximum of 20 switch status.

COMBINATION SWITCH MATRIX

Combination switch circuit

NOTE:

*: TAIL LAMP switch links lighting switch 1ST and 2ND positions.

Combination switch INPUT-OUTPUT system list

JMMIA0636GB

JMMIA0637GB

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

RR WASHER

HEADLAMP 2

HI BEAM

BCS

SYSTEM

BCS-9

< SYSTEM DESCRIPTION >

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NOTE:
Headlamp has a dual system switch.

COMBINATION SWITCH READING FUNCTION

Description

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

NOTE:

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

sumption 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 switch) is turned ON

OUTPUT 4

RR WIPER INT

INT VOLUME 3

AUTO LIGHT

TAIL LAMP

OUTPUT 5

INT VOLUME 2

RR WIPER ON

FR FOG

System

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

JPMIA0609GB

JMMIA0326GB

 

 

 

 

 

 

 

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