Nissan Cube. Instruction — part 40
BCS
BODY CONTROL SYSTEM
BCS-9
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
SYSTEM DESCRIPTION
BODY CONTROL SYSTEM
System Description
INFOID:0000000009949695
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 ignition 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
Signal buffer system
Power consumption control system
Auto light system
Turn signal and hazard warning lamp system
Headlamp system
Parking, license plate, side maker and tail lamps system
Front fog lamp system
Exterior lamp battery saver system
Illumination control system
Interior room lamp control system
Interior room lamp battery saver system
Illumination control system
Front wiper and washer system
Rear wiper and washer system
Automatic air conditioner
Warning chime system
WCS-5, "WARNING CHIME SYSTEM : System Diagram"
Power door lock system
Nissan Vehicle Immobilizer System (NVIS) - NATS
Vehicle security system
Panic alarm
Rear window defogger system
Intelligent Key system/engine start system
Door lock function
DLK-16, "INTELLIGENT KEY SYSTEM : System Diagram"
Remote keyless entry
function
Key reminder function
Warning function
Engine start function
Power window system
BCS-10
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
BODY CONTROL SYSTEM
Component Parts Location
INFOID:0000000009949696
Retained accessory power (RAP) system
Tire pressure monitoring system (TPMS) - AIR PRESSURE MONI-
TOR
WT-8, "TIRE PRESSURE MONITORING SYSTEM : System De-
scription"
System
Reference
1.
BCM
A.
Behind of instrument lower panel LH
(Left side)
JPMIA1514ZZ
BCS
COMBINATION SWITCH READING SYSTEM
BCS-11
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
COMBINATION SWITCH READING SYSTEM
System Diagram
INFOID:0000000009949697
System Description
INFOID:0000000009949698
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
Combination switch INPUT-OUTPUT system list
JPMIA1543GB
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
JPMIA1544GB
BCS-12
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
COMBINATION SWITCH READING SYSTEM
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
—
FR FOG
—
System
INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 5
JPMIA0609GB
JMMIA0326GB
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