Mitsubishi Colt Ralliart. Manual — part 318

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-16

HOW TO CHECK INPUT SIGNALS

1. Use the M.U.T.-III or a voltmeter to check input

signals ((Refer to GROUP 00

− How to Use Trou-

bleshooting/Inspection Service Points

− Diagno-

sis Function

P.00-7

).

2. The input signals below can be checked by con-

necting the M.U.T.-III or a voltmeter to the diagno-
sis connector.

NOTE: If a fault is found at the input signal check,

refer to trouble symptom chart

P.54B-38

.

SWITCHES WHICH ARE APPLICABLE TO INPUT SIGNAL CHECK, AND THEIR CHECK
CONDITIONS

Input signals

Requirements for sounding buzzer

Ignition switch (ACC)

When turned from the LOCK (OFF) position to the
ACC position

Ignition switch (IG1)

When turned from ACC to ON

Inhibitor switch ("R" position) <CVT>

When the ignition switch is turned ON and the
selector lever is moved to the R position.

Inhibitor switch ("P" position) <CVT>

When the ignition switch is turned ON and the
selector lever is moved to the P position.

Key reminder switch

When the inserted ignition key is pulled out

Hazard warning lamp switch

When the switch is turned from off to on

Fog lamp switch
Driver's door switch

When the driver's door is opened

Passenger's door switch

When the passenger's door is opened

All of the door switches

A door is opened when all the doors are closed

Tailgate switch

When the tailgate is opened

Driver's door lock actuator

When the driver's key cylinder or inside lock knob is
unlocked or locked

Passenger’s door lock key cylinder switch

When the passenger’s key cylinder is unlocked or
locked

Electric-folding outside mirror switch

When the electric-folding outside mirror is operated

Vehicle speed signal

When the vehicle speed has reached 10 km/h or
more

Main

Index

Group

TOC

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-17

Column switch

Tail lamp switch

When the lighting switch is moved from the automatic
lamp position to the tail lamp position.

Headlamp switch

When the lighting switch is moved from the tail lamp
position to the headlamp position.

Dimmer switch

When the switch is turned from off to on

Passing lamp switch
Turn-signal lamp switch (LH)
Turn-signal lamp switch (RH)
Wind shield mist wiper switch
Windshield intermittent wiper
switch
Windshield low-speed wiper
switch
Windshield high-speed wiper
switch
Windshield intermittent wiper
volume

When the windshield intermittent wiper volume is
rotated from "FAST" to "SLOW" (a pulse is sent
around the volume middle position)

Windshield washer switch

When the switch is turned from off to on

Rear wiper switch
Rear washer switch

Keyless entry
transmitter

Switches

When the switch is turned from off to on

Input signals

Requirements for sounding buzzer

Main

Index

Group

TOC

DIAGNOSIS CODE CHART

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-18

DIAGNOSIS CODE CHART

M1549000700977

Code No.

Diagnosis item

Reference
page

U1700

Trouble in SWS communication line system

P.54B-19

U1701

Communication error with column switch

P.54B-20

U1073

Bus off

P.54B-24

U1100

Engine-ECU <M/T> or Engine-CVT-ECU <CVT> time-out (related to engine)

P.54B-24

U1101

Engine-CVT-ECU time-out (related to CVT) <CVT>

U1102

ABS-ECU or ASC-ECU time-out

P.54B-26

U1110

Meter and A/C-ECU time-out (related to A/C)

P.54B-27

U1108

Meter and A/C-ECU time-out (related to meter)

U1128

Meter and A/C-ECU failure information (related to meter)

P.54B-29

B1706

Blown fuse is detected in fuse No.31 (hazard fuse).

P.54B-30

B1707

Open circuit is detected in the flasher circuit.

P.54B-32

B1708

An open circuit is detected in the variable intermittent wiper control switch.

P.54B-33

B1709

ETACS-ECU internal error (EEPROM problem)

P.54B-34

B1710

ETACS-ECU internal error (ROM problem)

B1711

ETACS-ECU internal error (RAM problem)

Main

Index

Group

TOC

DIAGNOSIS TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-19

DIAGNOSIS TROUBLE CODE PROCEDURES

Diagnosis code No.U1700: Trouble in SWS communication line system

CAUTION

If diagnosis code No.U1700 is set in the
ETACS-ECU, diagnose the CAN bus lines.

TROUBLE JUDGMENT

The ETACS-ECU communicates with the column
switch through the SWS communication line. If there
is any trouble in the ETACS-ECU or the SWS com-
munication lines, diagnosis code No.U1700 will be
set.

COMMENT ON TROUBLE SYMPTOM

The wiring harness wire or connectors may have
loose, corroded, or damage terminals, or terminals
pushed back in the connector, or the ETACS-ECU
may be defective.

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : .

Go to Step 2.

NO : .

Repair the CAN bus line (Refer to GROUP

54D

− Diagnosis

P.54D-13

).

Step 2. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Turn the ignition switch "LOCK" (OFF) position to

"ON" position.

(3) On completion, check that the diagnosis code is

not reset.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction

P.00-13

).

NO :

Replace the ETACS-ECU.

ETACS-ECU

COLUMN
SWITCH

COLUMN-ECU

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet

SWS Communication Line

Main

Index

Group

TOC