Mitsubishi Pajero Pinin. Manual - part 324

CHASSIS ELECTRICAL – 

Ignition Switch and Immobilizer System

54A-12

CHECK AT IMMOBILIZER-ECU

TERMINAL VOLTAGE CHECK CHART

Terminal No.

Signal

Checking requirements

Terminal voltage

1

Immobilizer-ECU power supply

Ignition switch: ON

System voltage

2

–

–

–

3

Engine-ECU

–

–

4

Immobilizer-ECU earth

Always

0 V

CHASSIS ELECTRICAL – 

Ignition Switch and Immobilizer System

54A-13

IGNITION SWITCH AND IMMOBILIZER SYSTEM

REMOVAL AND INSTALLATION

Caution: SRS
Before removal of air bag module and clock spring, refer to GROUP 52B – Service Precautions
and Air Bag Module and Clock Spring.

Pre-removal and Post-installation Operation
Clock Spring and Column Switch Removal and
Installation (Refer to GROUP 52B – Air Bag Modules
and Clock Spring.)

4

5

6

7

2

1

3

Section A – A

Clip

A

A

Section B – B

Section C – C

Tab

Tab

Instrument panel

B

B

C

C

A

A

1

2

3

2

3

Removal steps

1. Instrument under cover
2. Column cover, lower
3. Column cover, upper
4. Ignition switch

A

A

"

5. Steering lock cylinder
6. Immobilizer-ECU
7. Key reminder switch

CHASSIS ELECTRICAL – 

Ignition Switch and Immobilizer System

54A-14

REMOVAL SERVICE POINTS

A

A

"

STEERING LOCK CYLINDER REMOVAL

1.

Insert the key in the steering lock cylinder and turn it to
the “ACC” position.

2.

Using a cross-tip (+) screwdriver (small) or a similar tool,
push the lock pin of the steering lock cylinder inward and
then pull the steering lock cylinder toward you.

INSPECTION

IGNITION SWITCH CONTINUITY CHECK

1.

Remove the column cover lower and upper.

2.

Disconnect the wiring connector from the ignition switch.

3.

Operate the switch, and check the continuity between
the terminals.

Ignition key

iti

Terminal No.

g

y

position

1

2

4

5

6

LOCK

ACC

ON

START

KEY REMINDER SWITCH CONTINUITY CHECK

Disconnect the key reminder switch connector with the switch
attached to the vehicle, and then check the continuity between
the terminals.

Ignition key

Terminal No.

g

y

4

6

Removed

Inserted

Cross-tip (+) screwdriver

CHASSIS ELECTRICAL – 

Ignition Switch and Immobilizer System

54A-15

ENCRYPTED CODE REGISTRATION METHOD
AND RESETTING THE CODE TO THE FACTORY
SETTING

Register the encrypted code in the immobilizer-ECU and then
reset the code to the factory setting after parts have been
replaced.

Replacement part

Encrypted code

Ignition key

Necessary

Immobilizer-ECU

Necessary

Engine-ECU*

Necessary

NOTE
*: If the engine-ECU is replaced, the immobilizer-ECU and
ignition key should be replaced together with it.
Each engine-ECU has an individual information for
immobilizer-ECU, and the individual information is registered
in the immobilizer-ECU and ignition key.

ENCRYPTED CODE REGISTRATION METHOD

If using an ignition key that has just been newly purchased,
or if the immobilizer-ECU has been replaced, you will need
to register the encrypted codes for each ignition key being
used into the immobilizer-ECU. (A maximum of eight different
encrypted codes can be registered.)
Moreover, when the immobilizer-ECU has been replaced, you
will need to use the MUT-

II

 to input the vehicle secret code

and to register the password (secret code) that the user
specifies into the immobilizer-ECU. (Refer to the “MUT-

II

REFERENCE MANUAL” or “MUT-

II

 OPERATING IN-

STRUCTIONS”)

Caution
If registering of the encrypted codes is carried out after
all previously-registered codes have been erased, you
should have ready all of the ignition keys that have already
been registered.

1.

Connect the MUT-

II

 to the diagnosis connector.

Caution
Turn the ignition switch to LOCK (OFF) position before
connection or disconnection of the MUT-

II

.

2.

Check that the diagnosis code No.54 is not being generated
by the engine-ECU. If it is being generated check according
to the Troubleshooting Procedures.

3.

Use the ignition key that is to be registered to turn on
the ignition switch.

MUT-

II