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owners manual Mitsubishi Eclipse
owners manual Mitsubishi Eclipse - year of production: 1995, 1996, 1997, 1998, 1999 - Mitsubishi Eclipse II technical information manual EN
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from owners manual to the vehicle Mitsubishi Eclipse, year of production 1995 - 1999:
ENGINE - Control System 1-55
Bus Communication NllAK54AA
Communication is based on voltage differential be-
For communication to occur, the following basics
id are needed: tween the two bus wires. The differential occurs
when two parts of the communication chip, the cur-
a Bus+ and Bus- wires must be connected in
parallel to all modules. rent sink and the current source, are used by the
l Bus+ and Bus- wires are biased to approxi- communication chip to control the bus current flow.
mately 2.5 volts. Two different signal conditions can exist when the
l Bus+ and Bus- wires must have at least one
point of termination. bus functions normally; there can be a “0” bit or
a “1” bit.
$,;e;;’ ; OFF; ON ; OFF1 ON ;
I
I ’ 2.52 ; 1 2.52 1
Bus+ ; 1 2.49 j I 2.49 I 1 1
Voltage
Bus- I
I 2.51 ; I2.51 1 I
I I I
I i 2.48 / ; 2.48 j
Binary[ 1 1 0 I 1 I 0 I
L 1AFU0087 )
Messages are made from a series of these “0” and
When the bus circuits are not allowing current to
flow, there is a “1” condition. When the bus is idle“1” signals. Messages are generally transmitted ev-
ery ten or more milliseconds.
and no messages are being sent, the bus is in the
“1” condition. Each microprocessor on the bus is connected to
a communication chip. The communication chip
When the current source passes a small amount
communicates to the CPU the messages transmitted
of current into the Bus+ wire, and the current sink
and received on the bus.
allows a small amount of current to be passed to
ground, there is a“0” condition.
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year of production from: 1995
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Mitsubishi Eclipse II technical information manual
pages 73 - 79
Mitsubishi Eclipse II technical information manual
page 76 / 381
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