Nissan Teana J32. Manual — part 206
BCS-6
< FUNCTION DIAGNOSIS >
BODY CONTROL SYSTEM
FUNCTION DIAGNOSIS
BODY CONTROL SYSTEM
System Description
INFOID:0000000003809584
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-III and various set-
tings.
BCM CONTROL FUNCTION LIST
System
Reference
Combination switch reading system
Signal buffer system
Power consumption control system
Auto light system
•
(Xenon type headlamp)
•
(Halogen type headlamp)
Turn signal and hazard warning lamp system
•
(Xenon type headlamp)
•
(Halogen type headlamp)
Headlamp system
•
(Xenon type headlamp)
•
(Halogen type headlamp)
Parking, license plate and tail lamps system
•
(Xenon type headlamp)
•
(Halogen type headlamp)
Front fog lamp system
•
(Xenon type headlamp)
•
(Halogen type headlamp)
Rear fog lamp system
•
(Xenon type headlamp)
•
(Halogen type headlamp)
Exterior lamp battery saver system
•
(Xenon type headlamp)
•
(Halogen type headlamp)
Interior room lamp control system
Step lamp system
Trunk room lamp system
Interior room lamp battery saver system
Front wiper and washer system
Headlamp washer system
Warning chime system
WCS-5, "WARNING CHIME SYSTEM : System Diagram"
Door lock system
Trunk open system
Automatic drive positioner system
ADP-12, "AUTOMATIC DRIVE POSITIONER SYSTEM : System
Diagram"
Nissan Vehicle Immobilizer System (NVIS) - NATS
Vehicle security system
Rear window defogger system
•
DEF-4, "WITH AV CONTROL UNIT : System Diagram"
(With
AV control unit)
•
DEF-6, "WITHOUT AV CONTROL UNIT : System Diagram"
(Without AV control unit)
BCS
BODY CONTROL SYSTEM
BCS-7
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Component Parts Location
INFOID:0000000003809585
Intelligent Key system/engine start system
Door lock function
DLK-14, "INTELLIGENT KEY SYSTEM : System Diagram"
Trunk open function
Remote keyless entry
function
Key reminder function
Warning function
Engine start function
Power window system
System
Reference
1.
BCM
A.
Behind of combination meter
JPMIA1040ZZ
BCS-8
< FUNCTION DIAGNOSIS >
COMBINATION SWITCH READING SYSTEM
COMBINATION SWITCH READING SYSTEM
System Diagram
INFOID:0000000003809586
System Description
INFOID:0000000003809587
OUTLINE
• BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the
status of each switch.
• BCM is 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
JPMIA0734GB
System
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
INPUT 1
—
FR WASHER
FR WIPER LOW
TURN LH
TURN RH
INPUT 2
FR WIPER HI
—
FR WIPER INT
PASSING
HEADLAMP 1
INPUT 3
INT VOLUME 1
—
—
HEADLAMP 2
HI BEAM
JPMIA0735GB
BCS
COMBINATION SWITCH READING SYSTEM
BCS-9
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
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 mode.
• BCM operates as follows and judges the status of the combination switch.
- INPUT 1 - 5 outputs the voltage waveforms of 5 systems simultaneously.
- It operates the transistor on OUTPUT side in the following order: OUTPUT 5
→
4
→
3
→
2
→
1.
- The voltage waveform of INPUT corresponding to the formed circuit changes according to the operation of
the transistor on OUTPUT 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 (TURN RH switch) is turned ON
INPUT 4
—
INT VOLUME 3
AUTO LIGHT
—
TAIL LAMP
INPUT 5
INT VOLUME 2
—
RR FOG
FR FOG
—
System
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
JPMIA0067GB
JPMIA0068GB
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