Mitsubishi Galant 9G. Manual — part 1541

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-36

SPECIAL TOOLS

M1543000601760

TOOL

TOOL NUMBER
AND NAME

REPLACED BY
MILLER TOOL
NUMBER

APPLICATION

MB991958

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826

MUT-III sub assembly

A: Vehicle

communication
interface (V.C.I.)

B: MUT-III USB cable
C: MUT-III main

harness A
(Vehicles with CAN
communication
system)

D: MUT-III main

harness B
(Vehicles without
CAN
communication
system)

E: MUT-III main

harness C (for
Daimler Chrysler
models only)

F: MUT-III

measurement
adapter

G: MUT-III trigger

harness

MB991824-KIT
NOTE: G: MB991826
MUT-III Trigger Harness
is not necessary when
pushing V.C.I. ENTER
key.

Reading diagnostic
trouble code

CAUTION

MUT-III main harness A
(MB991910) should be
used. MUT-III main
harness B and C
should not be used for
this vehicle.

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-37

ON-VEHICLE SERVICE

HOW TO REGISTER ENCRYPTED CODE

M1543008100670

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

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

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A (Vehicles with CAN

communication system)

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 regis-
tered accessible.
If the ignition key, immobilizer-ECU, PCM is replaced,
encrypted codes of all the ignition keys must be registered. (A
maximum of eight different ignition key can be registered).
Moreover, when the immobilizer-ECU has been replaced, you
will need to use scan tool MB991958 to register the immobi-
lizer-ECU and input the vehicle secret code.
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 approx. 10 seconds, the immobilizer indicator will
blink for approx. 30 seconds.
NOTE: PCM has an encrypted code for immobilizer-ECU, and
the encrypted code is registered in the immobilizer-ECU and
ignition key.

MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222

Harness set

A: Test harness
B: LED harness
C: LED harness

adapter

D: Probe

General service tool
(jumper)

Making voltage and
resistance
measurements during
troubleshooting

A: Connect pin contact

pressure inspection

B: Power circuit

inspection

C: Power circuit

inspection

D: Commercial tester

connection

TOOL

TOOL NUMBER
AND NAME

REPLACED BY
MILLER TOOL
NUMBER

APPLICATION

MB991223

A

D

C

B

AF

AC307460

AB

IMMOBILIZER INDICATOR LIGHT

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-38

POINTS TO NOTE DURING OPERATION

If none of the functions can be used, check the diagnostic trou-
ble codes, and after carrying out any necessary repairs, repeat
the operation. If an incorrect password is input five times in a
row, the immobilizer-ECU judges that an unauthorized opera-
tion is being attempted. Start-prevention mode will be set, and
engine operation will stop and all special functions will be dis-
abled. If the ignition switch is turned to "ON" position and left in
that position for approximately 16 minutes, "Unauthorized oper-
ation, start- prevention mode" will be cancelled.

KEY ID REGISTRATION

All ignition keys can be registered with scan tool MB991958.
Additional ignition keys can be registered with or without scan
tool MB991958.

.

REGISTRATION WITH THE SCAN TOOL

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to "LOCK" (OFF) position before connect-
ing or disconnecting scan tool MB991958.
NOTE:

.

•

Before registration, check that no DTC code is set. If a DTC
code is set, resolve the problem beforehand.

•

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

•

If registering more than one key, do not disconnect scan
tool MB991958 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 Immobilizer System Diagnosis

P.54A-9

.

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-39

1. Connect the scan tool MB991958 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.

4. Select "System select."

5. Choose "IMMOBILIZER" from the "POWER TRAIN" tab.

6. Choose "Special Function" from "IMMOBILIZER" screen.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

System select

System select

Special function

CAN bus diagnosis

Function Select Menu

Menu

Menu

AC209666

Maintenance

AC

MFI

ELC-A/T

IMMOBILIZER

IMMOBILIZER

SS4II

CRUISE CNTRL

CHASSIS

BODY

System Select Menu

POWER TRAIN

POWER TRAIN

AC209667

AC

Check Chart For

Problem Sy

Data List

Special

Function

Self-diagnosis

Voltmeter

Simulated Vehicle

Speed Out

Drive Recorder

Resistor

POWERTRAIN

IMMOBILIZER

IMMOBILIZER

IMMOBILIZER

IMMOBILIZER

AC207298

AD