Mitsubishi Colt Ralliart. Manual — part 469

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-21

Step 5. Resistance measurement at
immobiliser-ECU connector B-49 to check the
earth circuit to the immobiliser-ECU connector.

AC509573

Connector: B-49

Harness side

AB

(1) Disconnect the immobiliser-ECU connector B-49

and measure the resistance at immobiliser-ECU
connector B-49 harness side.

AC400966

Connector: B-49
(Harness side)

AK

(2) Measure the resistance between terminal 2 and

earth.

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

The procedure is complete.

NO :

Go to Step 6.

Step 6. Check the wiring harness between
immobiliser-ECU connector B-49 (terminal 2) and
earth.

•

AC509573

Connector: B-49

Harness side

AB

Check the earth wires for open circuit.
NOTE:

AC509573

Connector: B-25

AC

Prior to the wiring harness inspection, check joint

connector B-25, and repair if necessary.

Q: Are the wiring harness between immobiliser-ECU

connector B-49 (terminal 2) and earth in good
condition?
YES :

The procedure is complete.

NO :

Repair the wiring harness.

Main

Index

Group

TOC

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-22

DATA LIST REFERENCE TABLE

M1543007300541

Item No.

Inspection item

Inspection
requirement

Normal condition

01

Key has been registered

−

Number of registered ignition keys

CHECK IMMOBILISER-ECU

M1543007601244

TERMINAL VOLTAGE CHECK TABLE

AC601477AB

B-49 Immobilizer-ECU connector

Terminal No.

Signal

Inspection condition

Terminal voltage

1

Immobiliser-ECU power supply

Ignition switch: "LOCK"
(OFF)

0V

Ignition switch: "ON"

System voltage

2

Immobiliser-ECU earth

Always

0V

3

Engine-ECU <M/T> or
Engine-CVT-ECU <CVT>

−

−

7

Ignition key ring antenna

−

−

8

Ignition key ring antenna

−

−

Main

Index

Group

TOC

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-23

ON-VEHICLE SERVICE

HOW TO REGISTER ENCRYPTED CODE

M1543008100959

CAUTION

Because registering the encrypted codes is done
after all previously-registered codes have been
erased, you should keep all of the ignition keys
that have already been registered accessible.
If the ignition key, immobiliser-ECU, engine-ECU
<M/T> or engine-CVT-ECU <CVT> is replaced or an
ignition key is added, encrypted codes of all the igni-
tion keys must be registered. (A maximum of eight
different ignition key can be registered). Moreover,
when the immobiliser-ECU has been replaced, you
need to register the password (secret key code) and
an encrypted code into the immobilizer-ECU by
using the M.U.T.-III. The vehicle’s password input is
required for registration with the M.U.T.-III, and the
vehicle’s password can be changed by the owner
using the M.U.T.-III. If an attempt is made to start the
engine with an unregistered ignition key, cranking
occurs, but fuel supply is cut off to disable the
engine. In approximately.
NOTE: Engine-ECU <M/T> or engine-CVT-ECU
<CVT> has an encrypted code for immobilizer-ECU,
and the encrypted code is registered in the immobi-
lizer-ECU and ignition key.

POINTS TO NOTE DURING OPERATION

If none of the functions can be used, check the diag-
nosis codes, and after carrying out any necessary
repairs, repeat the operation. If an incorrect vehicle’s
password is input five times in a row, the immobi-
liser-ECU judges that an unauthorized operation is
being attempted. Start-prevention mode will be set,
and engine operation will stop and all special func-
tions will be disabled. If the ignition switch is turned
to "ON" position, "Unauthorized operation, start- pre-
vention mode" will be cancelled.

KEY ID (ENCRYPTED CODE) REGISTRA-
TION <M.U.T.-III>

All ignition keys can be registered with M.U.T.-III.
When you add the ignition key, you should prepare
the additional key and all of the ignition keys that
have already been registered.

REGISTRATION WITH THE M.U.T.-III

CAUTION

To prevent damage to M.U.T.-III, always turn the
ignition switch to "LOCK" (OFF) position before
connecting or disconnecting M.U.T.-III.
NOTE:

.

•

Before registration, check that no diagnosis code
is set. If a diagnosis code is set, resolve the prob-
lem beforehand.

•

Using the key ID register function will cause all
key IDs that have been previously registered in
the immobiliser-ECU to be erased. All keys need
to be registered. Those which have been regis-
tered before should be on hand before using this
function.

•

If registering more than one key, do not discon-
nect M.U.T.-III halfway through the registration
process.

•

After registering key IDs, check that the engine
can be started using all of the keys that have
been registered. If the engine will not start, refer
to Immobiliser System Troubleshooting

P.54A-7

.

AC206895

AC

Diagnosis

connector

MB991827

MB991824

MB991910

1. Connect the M.U.T.-III to the diagnosis connector

(16-pin).

2. Turn the ignition switch to "ON" position.

Main

Index

Group

TOC

System select

Special function

CAN bus diagnosis

Function Select Menu

Menu

AC209666

Maintenance

AD

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-24

3. Select "System select" from the start-up screen.

MPI/GDI/DIESEL

ELC-A/T/CVT

IMMOBILIZER

SS4II

TCL/STARLTY CONTROL

AUTO CRUISE

CHASSIS

BODY

System Select Menu

POWER TRAIN

AC305175

4. Choose "IMMOBILISER" from the "POWER

TRAIN" tab.

Check Chart For

Problem Sy

Data List

Special

Function

Self-diagnosis

Simulated Vehicle

Speed Out

Resistor

Voltmeter

POWERTRAIN

IMMOBILIZER

IMMOBILIZER

AC305176

5. Choose "Special Function" from "IMMOBILISER"

screen.

Key ID registration

Additional Key

Registration

POWERTRAIN

Special Function

IMMOBILIZER

Special Function

AC305177

6. Choose "Key registration" from "Special Function"

screen.

POWERTRAIN

IMMOBILIZER

Special Function

7

8

9

4

5

6

1

2

3

0

Back

Back

Space

Space

Clear

Clear

Key registration

AC207300

AD

7. Enter the vehicle’s password on the "Key

registration" screen, and then click the check
mark icon. Follow the prompts on the screen to
insert key(s) into the ignition switch to begin key
registration.

POWERTRAIN

IMMOBILIZER

Special Function

IMMOBILIZER-ECU registration

Progress

In-Complete

Key registration

AC207302

8. If the key ID was registered successfully,

"Progress" indication will turn active (grey). Then
the registration process completes. If the key ID
failed to be registered, "In-Complete" indication
will turn active (grey).

9. The number of keys currently registered will be

displayed. To register an additional key, replace
the ignition key with the next key to be registered
within seven seconds. Key ID registration screen
will be displayed, then register another key.
NOTE: A maximum of eight different keys can be
registered.

10.This completes the registration operation. Turn

the ignition switch "LOCK" (OFF) and leave it off
for approximately ten seconds.

11.Check that the engine can be started with each of

the ignition keys.

12.Check that the immobiliser system diagnosis

code and MPI system diagnosis code did not set.

13.If not diagnosis code is shown, terminate the

M.U.T.-III.

14.Turn the ignition switch to "LOCK" (OFF) position.
15.Disconnect M.U.T.-III.

Main

Index

Group

TOC