Mitsubishi Evolution X. Manual — part 528

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-19

NOTE:

: Change to continuous illumination after flashing for

about 1 minuite.

TPMS
failure
warning

ID not
stored

The TPMS
transmitter ID is
not registered in
the KOS-ECU.

Flashes

Symbol and
"SERVICE
REQUIRED" is
displayed.

ID is registered
normally.

Defective
EEPROM

Abnormality of
data in the
EEPROM of the
KOS-ECU is
detected.

Data in the
EEPROM of the
KOS-ECU is
checked to be
normal.

Problem in
signal
reception

The signals from
TPMS
transmitters
cannot be
received while
driving for about
20 minutes.

The signal from the
TPMS transmitter
that was warned is
received.

Defective
sensor

The sensor
failure signal is
received from the
TPMS
transmitter.

A normal signal is
received from the
TPMS transmitter
that was warned.

The
battery
voltage of
the TPMS
transmitter
is low.

The reception
problem warning
is activated
because of the
low battery
voltage of the
TPMS
transmitter.

The signal of normal
battery voltage is
received from the
TPMS transmitter
that was warned.

Vehicle
speed
input
problem

The vehicle
speed is not
input.

The vehicle speed
is input.

Abnormal
vehicle
speed
value

The vehicle
speed value is
abnormal.

The normal vehicle
speed value is
received.

Display
contents

Item

State

Warning operations

Warning
cancellation
conditions
(Cancels warning
operations when
one of the
conditions met)

TPMS
warning
light

Multi
information
display

AC610120

SERVICE
REQUIRED

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-20

DIAGNOSTIC TROUBLE CODE CHART

M1429600200254

CAUTION

During diagnosis, a DTC associated with other system may be set when the ignition switch is turned
on with connector(s) disconnected. On completion, confirm all systems for DTC(s). If DTC(s) are set,
erase them all.

Diagnostic trouble code
number

Diagnostic item

Reference
page

B1731

Engine control module communication timeout

P.42B-22

B1761

VIN code not programmed

P.42B-24

B1A08

Keyless/KOS key1 performance

P.42B-26

B1A09

Keyless/KOS key2 performance

B1A0A

Keyless/KOS key3 performance

B1A0B

Keyless/KOS key4 performance

B1A10

Keyless/KOS key 1 low battery

P.42B-27

B1A11

Keyless/KOS key 2 low battery

B1A12

Keyless/KOS key 3 low battery

B1A13

Keyless/KOS key 4 low battery

B1A24

Key ID not registered

P.42B-28

B1A25

Key ID unmatched

P.42B-29

B1A28

Engine control module authenticate error

P.42B-31

B1A35

Transponder read error

P.42B-33

B2101

IG SW start POS.circuit low

P.42B-36

B2102

IG SW start POS.circuit high

B2204

Coding data mismatch

P.42B-39

B2206

VIN code mismatch

P.42B-41

B2352

Antenna fail

P.42B-43

B2400

KOS key registration fail

P.42B-49

B2401

Keyless/KOS key ID not registered

P.42B-60

B2402

STL

unit comm.(system ID)

P.42B-62

B2403

STL

unit comm.(CRC)

B2404

STL

unit comm.(function code)

B2405

STL

unit comm.(rolling code)

B2406

STL

unit comm.(PTC operate)

B2407

STL

unit comm.(EEPROM)

B2408

STL

unit comm.(solenoid)

B2409

STL

unit comm.(No response)

P.42B-67

B240A

FR antenna(outdoor) open

P.42B-72

B240B

FL antenna(outdoor) open

P.42B-78

B240C

Tail gate antenna(outdoor) open

P.42B-84

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-21

B240D

Front antenna(indoor) open

P.42B-90

B2410

Rear antenna(indoor) open

P.42B-95

B2412

LF antenna power voltage

P.42B-101

B2413

STL

unit power voltage

P.42B-108

B2414

Unlock sensor fail

P.42B-111

B2415

module power voltage

P.42B-118

B2416

ECU internal error

P.42B-129

C1608

EEPROM error

P.42B-130

C1900

No registration

P.42B-131

C1901

Vehicle speed information abnormality

P.42B-132

C1910

Transmitter low battery voltage abnormality 1

P.42B-134

C1920

Transmitter low battery voltage abnormality 2

C1930

Transmitter low battery voltage abnormality 3

C1940

Transmitter low battery voltage abnormality 4

C1911

Reception abnormality 1

C1921

Reception abnormality 2

C1931

Reception abnormality 3

C1941

Reception abnormality 4

C1913

Acceleration sensor abnormality 1

P.42B-142

C1923

Acceleration sensor abnormality 2

C1933

Acceleration sensor abnormality 3

C1943

Acceleration sensor abnormality 4

C1914

Pressure sensor abnormality 1

C1924

Pressure sensor abnormality 2

C1934

Pressure sensor abnormality 3

C1944

Pressure sensor abnormality 4

C1912

Tire inflation pressure warning 1

P.42B-144

C1922

Tire inflation pressure warning 2

C1932

Tire inflation pressure warning 3

C1942

Tire inflation pressure warning 4

C1915

Transmitter OFF mode 1

P.42B-147

C1925

Transmitter OFF mode 2

C1935

Transmitter OFF mode 3

C1945

Transmitter OFF mode 4

U0019

Bus off (CAN-B)

P.42B-148

U0141

ETACS-ECU CAN timeout

P.42B-150

U0151

SRS-ECU CAN timeout

P.42B-151

U0154

Occupant classification-ECU CAN timeout

P.42B-153

Diagnostic trouble code
number

Diagnostic item

Reference
page

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-22

NOTE:

•

: STL unit = steering lock unit

•

: RA module = receiver antenna module

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC B1731: Engine control module communication timeout

CAUTION

• When the DTC B1731 is set, be sure to diag-

nose the CAN bus line.

• When replacing the ECU, always check that

the communication circuit is normal.

DTC SET CONDITION

KOS-ECU checks that the Engine Control Module
data has been received via the CAN bus lines, and if
not, sets the DTC No. B1731.

TECHNICAL DESCRIPTION (COMMENT)

If no data [ETACS transmits engine random number
data to KOS-ECU via the CAN bus lines] is received
from the Engine Control Module via the CAN bus
lines when the ignition switch is turned to ON posi-
tion, it is judged as abnormal.

TROUBLESHOOTING HINTS

• Malfunction of CAN bus line

• Malfunction of KOS-ECU

• Malfunction of engine control module

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicles Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

U0155

Combination meter CAN timeout