Mitsubishi Outlander (2013+). Manual - part 217

IMMOBILIZER SYSTEM <Vehicles without keyless operation system>

CHASSIS ELECTRICAL

54A-50

IGNITION SWITCH: ON position <at auto start by Auto Stop & Go (AS&G) System>

According to the boost command sent from the AS&G-ECU, the DC/DC converter opens the relay 1. At this 
time, the battery voltage decreased by the auto start is boosted to approximately 12V, and is output to each 
audio device.(Relay 1: Open, Relay 2: Close)

NOTE: 

.

DC/DC converter boost stop condition (boost is stopped when any of the following applies)

•

Input voltage to DC/DC converter is 12.2 V or more.

•

DC/DC converter boost duration is 5 seconds or more.

•

Diagnosis code B1302 or B1301 is set in AS&G-ECU.

IMMOBILIZER SYSTEM <Vehicles without keyless 

operation system>

GENERAL INFORMATION

M2544600200251

• The immobilizer system consists of the receiver 

antenna, the ETACS-ECU, the steering lock 
(immobiliser antenna) and the ignition key.

• The receiver antenna communicates with the 

transponder via the steering lock to receive key-
less entry signal, and then sends the signal to the 
ETACS.

• ID codes (transmitter and transponder) is regis-

tered into ETACS-ECU.

• The ETACS-ECU compares the ID code, which it 

receives from the receiver antenna, with the one 
stored in its memory. If the ID codes correspond, 
the ETACS-ECU will permit the keyless operation 
and the engine starting.

• The ignition key (transmitter and transponder) 

incorporates an indicator lamp that enables the 
driver to check if the signal is transmitted cor-
rectly or if the battery in the key is discharged.

• Each vehicle is provided with two ignition keys as 

standard, and up to eight ignition keys can be 
registered.

• Settings of the keyless entry function can be 

adjusted using a customisation function.

AC905388

Battery

Ignition switch 
(ON)

AS&G-ECU

Relay 1

Relay 2

Radio and CD player

Multivision display

Hands free-ECU

Battery (+B) input

ACC input

Battery (+B) output

Boost command  
from AS&G-ECU

DC/DC converter

ACC output

<Multivision display>

AG

Battery

ACC

<Multivision display>

Control section

Boost section

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IMMOBILIZER SYSTEM <Vehicles without keyless operation system>

CHASSIS ELECTRICAL

54A-51

CONSTRUCTION DIAGRAM

MAIN COMPONENTS

ACB05551

Transponder

Ignition key

Immobilizer 
antenna

Receiver 
antenna

ETACS-ECU

Engine-ECU

Ignition

Injection

CPU

CAN

CAN-C

AB

Steering lock

ID

Starter relay

Component name 

Outline of function

Receiver antenna

Receives the operation signals from the lock/unlock switches on the ignition 
key (transmitter and transponder), sends them to ETACS-ECU
Sends signal to the transponder in the ignition key and receives the reply data 
from the transponder via the steering lock (immobilizer antenna), sends the 
reply data to ETACS-ECU.
Communication with transponder is operated by ETACS, Receiver antenna is a 
driver module for transponder communication.

Steering lock (immobilizer 
antenna)

Wireless communication with ignition key (transponder) receives the ID code 
(key ID) of the ignition key (transponder) needed for starting the engine, 
transponder communication is conducted via this antenna and receiver 
antenna drives this antenna.

Ignition key (transmitter 
and transponder) 

The ignition key (transponder) receives signals for certification sent from 
ETACS-ECU via receiver antenna and immobilizer antenna, and sends the 
reply data signal to ETACS-ECU via receiver antenna and immobilizer 
antenna. 
The ignition key (transmitter) also sends signals to receiver antenna when the 
lock/unlock switches on it are operated.

ETACS-ECU

Conduct certification communication with the engine by using the CAN 
communications. 
Operate the receiver antenna for the transponder communication, and store 
the IDs using the immobilizer communication. 

Engine-ECU

Communicates with ETACS-ECU via CAN. Permits/inhibits the engine starting 
and controls the engine operation.

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IMMOBILIZER SYSTEM <Vehicles without keyless operation system>

CHASSIS ELECTRICAL

54A-52

System configuration

OPERATION

1. When the ignition key is inserted to the ignition 

switch or the ignition switch is turned to the ON 
position, ETACS-ECU starts operation of receiver 
antenna, and starts communication with ignition 
key (transponder) by radio frequency.

2. When the ignition key receives the request signal 

to start the communication from receiver antenna 
via immobilizer antenna, then transponder starts 
the communication and send the signal for 
communication to receiver antenna via 
immobilizer antenna.

3. Receiver antenna sends the codes (key ID, etc) 

sent from the ignition key to the ETACS-ECU.

4. ETACS-ECU compares the codes (key ID, etc) 

sent from receiver antenna with the 
already-registered ID code and self calculated 
value, and then reflect the result of transponder 
communication to the certification communication 
with engine ECU.

NOTE: 

.

•

The transponder integrated in the ignition key 
uses the power supplied from receiver antenna 
via immobilizer antenna. Therefore, it can be 
used regardless of the battery in ignition key (for 
transmitter).

•

Two ignition keys (transmitter and transponder) 
are provided, and up to eight keys can be regis-
tered to one vehicle as needed.

•

When ETACS-ECU is replaced or when the key 
is lost or added, the ID codes for all the keys (key 
ID) must be registered using M.U.T.-III.

ACC00115

ETACS-ECU

Turn-signal lamp

Receiver 
antenna

Steering lock
(immobilizer 
antenna)

Engine-ECU

Lock switch

Unlock switch

CAN-C 
communication

Ignition key

Radio
frequency
signal 
(Transponder)

Radio
frequency
signal (Transmitter)

Room lamp, 
Ignition key cylinder
illumination lamp

Power window switch

Door lock actuator

Door mirror assembly

AB

Transmitter

Transponder

Tailgate latch 
assembly

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ETACS

CHASSIS ELECTRICAL

54A-53

ETACS

GENERAL INFORMATION

M2545400200744

ETACS

*

-ECU has three main functions (gateway 

function, coding function, body electrical equipment 
control function).

NOTE: 

*

: ETACS (Electronic Time and Alarm Control 

System)

GATEWAY FUNCTION

As a central ECU for the on-vehicle communication 
network system established in the vehicle, the gate-
way function is integrated into ETACS-ECU. The 
gateway function offers the following functions:

• Data transfer among four networks

*1

Transfers the data flowing in a network to another 

network in real time.

NOTE: 

*1

: CAN

*2

-C (power train network), 

CAN

*2

-C-Mid (middle-speed body network), LIN 

*3

(low-speed body network) and LIN-TAS 

*4

(anti-theft alarm system network)

NOTE: 

*2

: For details of CAN, refer to GROUP 54C, 

Controller Area Network (CAN) 

P.54C-2

.

NOTE: 

*3, *4

: For details of LIN, refer to GROUP 54B, 

Local Interconnect Network (LIN) 

P.54B-2

.

• Diagnosis of each network communication line

Detects and stores an open circuit and short circuit of 

communication line.

• Communication error diagnosis of network ECUs

Detects and stores the ECU that is not properly 

transmitting data.

CODING FUNCTION

By writing the coding data such as vehicle model, 
destination, and equipment level to ECUs, the func-
tions of ECUs can be changed. There are two types 
of coding method, the local coding and global coding.

BODY ELECTRICAL EQUIPMENT 
CONTROL FUNCTION

This function controls the following electrical equip-
ment.

• Exterior lamps

• Wiper, washer

• Central door locking system

• Interior lamp

• Electric-folding door mirror <vehicles with electric 

retractable remote controlled door mirrors>

• Keyless entry <Vehicles without keyless opera-

tion system>

• Power supply control

• Immobilizer system <Vehicles without keyless 

operation system>

• Headlamp automatic levelling system <vehicles 

with headlamp automatic levelling system>

• Security alarm system <Vehicles with security 

alarm>

FUNCTION AND CONTROL BY ETACS-ECU.

M2545400300547

POWER SUPPLY CONTROL

ACC POWER CUT-OFF FUNCTION <INI-
TIAL CONDITION: 30 MINUTES>

The function has been added that the ACC power 
supply is cut-off when 30 or 60 minutes has elapsed 

with the ignition switch in the ACC position.

NOTE:  Using a customise function, the availability of 
ACC power cut-off function and its time to ACC 
power cut-off can be set. (Refer to Customise Func-
tion 

P.54A-54

).

ACC01043AB

ETACS-ECU

LIN

CAN-C-Mid

CAN-C

LIN-TAS

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