Mitsubishi Galant (2004+). Manual — part 1683
COMMUNICATION METHOD
SIMPLIFIED WIRING SYSTEM (SWS)
54B-3
COMMUNICATION METHOD
M2541001000226
As shown in the figure, SWS communications con-
nect the ETACS-ECU, the column switch (in the col-
umn ECU), the front ECU, and the sunroof-ECU.
CAN communications connect the ETACS-ECU, the
powertrain control module, the A/C-ECU, the
SRS-ECU, the combination meter, the ABS-ECU,
and the multi center display unit (middle grade type).
These two communications groups are connected to
form a dedicated network for sending multiplex data.
AC306603
ETACS-ECU
FRONT-ECU
COLUMN SWITCH
(COLUMN-ECU)
SUNROOF-ECU
SWS
CAN
A/C-ECU
POWERTRAIN CONTROL
MODULE
COMBINATION METER
MULTI CENTER
DISPLAY UNIT
(MIDDLE GRADE TYPE)
AB
Single-direction communication
Bidirectional communication
ABS-ECU
SRS-ECU
MULTI-DISTRIBUTION INPUT/OUTPUT BY CIRCUIT
SIMPLIFIED WIRING SYSTEM (SWS)
54B-4
MULTI-DISTRIBUTION INPUT/OUTPUT BY CIRCUIT
M2541002000230
Multi-distribution is employed by the following cir-
cuits. The relation of the input switches, sensors,
ECUs connected by multi-distribution lines, and out-
puts are also shown below.
TONE ALARM
•
Ignition key reminder tone alarm function
•
Lights still ON reminder warning function
•
Seat belt tone alarm function
•
Door ajar warning buzzer
•
Multi center display operation tone <vehicles with
multi center display (middle grade type)>
•
Turn-signal light buzzer
AC305309
Circuit and Input Switch and Sensor
ECUs and Switches
Connected by Multi-
Distribution
Output Side
•
Ignition switch (IG1)
•
All door switch
•
Key reminder switch
Tone alarm
(built-in ETACS-ECU)
ETACS-ECU
Column switch
(Lighting or turn
signal light switch)
AB
Combination meter
•
Ignition switch (IG1)
•
Seat belt switch
•
Vehicle speed signal
: CAN communication line
: SWS communication line
Multi center display unit
(middle grade type)
•
Tone alarm sound signal
MULTI-DISTRIBUTION INPUT/OUTPUT BY CIRCUIT
SIMPLIFIED WIRING SYSTEM (SWS)
54B-5
Windshield wiper washer
•
Windshield mist wiper
•
Vehicle speed-dependent variable windshield
intermittent wiper
•
Windshield low speed wiper
•
Windshield high speed wiper
•
Windshield washer
AC305313
Circuit and Input Switch and Sensor
ECUs and Switches
Connected by Multi-
Distribution
Output Side
AB
•
Ignition switch (ACC)
Column switch
(Windshield wiper
washer switch)
•
Windshield wiper motor
•
Windshield washer motor
Column switch (Windshield
intermittent wiper volume)
Front-ECU
A/C-ECU
•
Ignition switch (ACC)
ETACS-ECU
: CAN communication line
: SWS communication line
Combination meter
•
Vehicle speed signal
Multi center display unit
(middle grade type)
•
Ignition switch (ACC)
MULTI-DISTRIBUTION INPUT/OUTPUT BY CIRCUIT
SIMPLIFIED WIRING SYSTEM (SWS)
54B-6
Lighting
•
Headlight, taillight
•
Headlight automatic shutoff function
•
Fog light
Flasher
•
Turn signal light
•
Hazard warning light
AC305314
Circuit and Input Switch and Sensor
ECUs and Switches
Connected by Multi-
Distribution
Output Side
AB
•
Ignition switch (IG1)
•
Driver's door switch
•
Fog light switch
Column switch
(Lighting switch)
•
Headlights
•
Taillights
•
Fog lights
•
Illumination lights
Front-ECU
•
Ignition switch (IG2)
ETACS-ECU
Combination meter
•
High beam indicator and
Fog light indicator
•
Illumination lights
: CAN communication line
: SWS communication line
Combination meter
•
Ignition switch (IG1)
AC305317
Circuit and Input Switch and Sensor
ECUs and Switches
Connected by Multi-
Distribution
Output Side
AB
Combination meter (Turn
signal lights indicator)
Turn signal lights
Column switch
(Turn signal light
switch)
•
Ignition switch (IG1)
•
Hazard warning light switch
ETACS-ECU
: CAN communication line
: SWS communication line
Combination meter
•
Ignition switch (IG1)
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