Nissan Cube. Manual — part 62
BCS
COMBINATION SWITCH READING SYSTEM
BCS-97
< SYSTEM DESCRIPTION >
[WITHOUT INTELLIGENT KEY SYSTEM]
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 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
—
—
TAIL LAMP
OUTPUT 5
INT VOLUME 2
RR WIPER
—
—
—
System
INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 5
JPMIA0609GB
JMMIA0326GB
BCS-98
< SYSTEM DESCRIPTION >
[WITHOUT INTELLIGENT KEY SYSTEM]
COMBINATION SWITCH READING SYSTEM
• The circuit between OUTPUT 4 and INPUT 5 is formed when the TAIL LAMP switch 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 (TURN RH switch, TAIL LAMP switch) 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
BCM judges the wiper intermittent dial 1 - 7 by the status of INT VOLUME 1, 2 and 3 switches.
JMMIA1039GB
JMMIA1040GB
Wiper intermittent
dial position
Switch status
INT VOLUME 1
INT VOLUME 2
INT VOLUME 3
1
ON
ON
ON
2
ON
ON
OFF
3
ON
OFF
OFF
4
OFF
OFF
OFF
5
OFF
OFF
ON
BCS
COMBINATION SWITCH READING SYSTEM
BCS-99
< SYSTEM DESCRIPTION >
[WITHOUT INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
NOTE:
For details of wiper intermittent dial position, refer to
6
OFF
ON
ON
7
OFF
ON
OFF
Wiper intermittent
dial position
Switch status
INT VOLUME 1
INT VOLUME 2
INT VOLUME 3
BCS-100
< SYSTEM DESCRIPTION >
[WITHOUT INTELLIGENT KEY SYSTEM]
SIGNAL BUFFER SYSTEM
SIGNAL BUFFER SYSTEM
System Diagram
INFOID:0000000009949760
System Description
INFOID:0000000009949761
OUTLINE
BCM has the signal transmission function that outputs/transmits each input/received signal to each unit.
SIGNAL TRANSMISSION FUNCTION LIST
JMMIA1056GB
Signal name
Input
Output
Description
Ignition switch ON signal
Ignition switch
IPDM E/R (CAN)
Inputs the ignition switch signal
and transmits it with CAN com-
munication.
Door switch signal
Any door switch
• Combination meter (CAN)
• IPDM E/R (CAN)
Inputs the door switch signal
and transmits it with CAN com-
munication.
Blower fan on signal
Fan switch
ECM (CAN)
Inputs each signals, and trans-
mits the blower fan on signal
and A/C on signal via CAN com-
munication.
A/C on signal
A/C control
Oil pressure switch signal
IPDM E/R (CAN)
Combination meter (CAN)
Transmits the received oil pres-
sure switch signal with CAN
communication.
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