Nissan Sentra. Instruction — part 453
SYSTEM
EXL-15
< SYSTEM DESCRIPTION >
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NOTE:
For details of wiper intermittent dial position, refer to
COMBINATION SWITCH READING SYSTEM : System Diagram (Without Intelligent
Key System)
INFOID:0000000010295732
COMBINATION SWITCH READING SYSTEM : System Description (Without Intelli-
gent Key System)
INFOID:0000000010295733
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 states.
COMBINATION SWITCH MATRIX
Combination switch circuit
6
OFF
ON
ON
7
OFF
ON
OFF
Wiper intermittent
dial position
Switch status
INT VOLUME 1
INT VOLUME 2
INT VOLUME 3
AWMIA1224GB
AWMIA1221GB
EXL-16
< SYSTEM DESCRIPTION >
SYSTEM
Combination switch INPUT-OUTPUT system list
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”.
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
OUTPUT 4
—
INT VOLUME 3
—
—
TAIL LAMP
OUTPUT 5
INT VOLUME 2
—
—
FR FOG
—
JPMIA0609GB
JMMIA0326GB
SYSTEM
EXL-17
< SYSTEM DESCRIPTION >
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Example 1: When a switch (TAIL LAMP) is turned ON
• 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, TAIL LAMP) 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.
AWMIA1222GB
AWMIA1223GB
EXL-18
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)
DIAGNOSIS SYSTEM (BCM) (WITH INTELLIGENT KEY SYSTEM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)
INFOID:0000000010309869
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions.
Direct Diagnostic Mode
Description
ECU identification
The BCM part number is displayed.
Self Diagnostic Result
The BCM self diagnostic results are displayed.
Data Monitor
The BCM input/output data is displayed in real time.
Active Test
The BCM activates outputs to test components.
Work support
The settings for BCM functions can be changed.
Configuration
• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.
CAN DIAG SUPPORT MNTR
The result of transmit/receive diagnosis of CAN communication is displayed.
System
Sub System
Direct Diagnostic Mode
ECU id
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Acti
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CAN DIAG SUP
P
OR
T MNTR
Door lock
DOOR LOCK
×
×
×
×
Rear window defogger
REAR DEFOGGER
×
×
Warning chime
BUZZER
×
×
Interior room lamp timer
INT LAMP
×
×
×
Exterior lamp
HEAD LAMP
×
×
×
Wiper and washer
WIPER
×
×
×
Turn signal and hazard warning lamps FLASHER
×
×
×
Air conditioner
AIR CONDITIONER
×
Intelligent Key system
INTELLIGENT KEY
×
×
×
×
Combination switch
COMB SW
×
BCM
BCM
×
×
×
×
×
Immobilizer
IMMU
×
×
×
×
Interior room lamp battery saver
BATTERY SAVER
×
×
×
Trunk open
TRUNK
×
Vehicle security system
THEFT ALM
×
×
×
RAP system
RETAINED PWR
×
Signal buffer system
SIGNAL BUFFER
×
TPMS
AIR PRESSURE MONITOR
×
×
×
×
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