Mitsubishi Electric X1T266IMB11104 User Manual

Immobilizer System User's Manual

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USRSMANUAL_11104.DOC

Model：IMB111-04

1. General

The immobilizer system is an electronic anti-theft system. This system prevents the engine from

unauthorized starting such as hot-wiring, etc. The engine would not start until the ID code registered

in the ignition key coincides with the code registered in the Engine Unit on the vehicle.

Transceiver

Engine ECU

Transponder key

Antenna Coil with

Transceiver

＋

Steerin

handle lock

(NOTE)The Tester is only used for
performing the transponder ID code
registration to the Engine ECU.

Major components and functions

Name Function

Transponder ・Sends ID code to the Transceiver via key ring antenna.

Antenna Coil with

Transceiver

[Key ring antenna]
・Supplies power and sends / receives data to and from the transponder by means

of electromagnetic coupling.
[Transceiver]
・ Receives the ID code from the transponder and Send it to the Engine ECU.

Tester

Engine ECU [Functions related to the immobilizer system]

・Receives the ID code from the Transceiver and compares it with the code

registered in the Engine ECU and operates to prepare / prohibit the start

of the engine.

Handling precaution

(1) When starting the engine, keep metal objects (iron, etc.), electric equipment (cellular phone, electric

razor, etc.) and other immobilizer keys away from the steering handle lock.

(2) Never damage the plastic key bow with a knife or fill transponder or similar articles inside.

USRSMANUAL_11104.DOC

Model：IMB111-03

2. System operation

(1) Operation start

When the ignition key is turned to the ON position, battery power is supplied to the Engine ECU and

Transceiver.

(2) Sending to the transponder (the Engine ECU to Transponder)

The Engine ECU sends electromagnetic wave to the transponder via key ring antenna and Transceiver

to supply power and send the data to the transponder by means of electromagnetic coupling.

(3) Sending ID code (Transponder to the Engine ECU through the Transceiver)

The transponder sends the ID code to the Engine ECU via the key ring antenna and the Transceiver.

(4) Comparison of ID code

The ID code sent from the transponder is compared with the ID code registered in the Engine ECU.

(5) Engine start

When the comparison result of ID code is coincident, turning the ignition key to the START position

can start the Engine.

Note:

(1) Transponder ID code registration to the Engine ECU is performed using the Tester. The transponder

key has individual ID code and a maximum of 8 types of codes (8 keys) can be registered to the Engine

ECU.