Mitsubishi Evolution X. Manual - part 1081

THEFT ALARM

TSB Revision

CHASSIS ELECTRICAL

54A-685

DIAGNOSIS

STANDARD FLOW OF DIAGNOSTIC 
TROUBLESHOOTING

M1547001200173

Refer to GROUP 00 

− Contents of troubleshooting 

P.00-7

.

DIAGNOSTIC FUNCTION

M1547001300040

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

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

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

MB991223

a. MB991219
b. MB991220
c. MB991221
d. MB991222

Harness set

a. Check harness
b. LED harness
c. LED harness 

adapter

d. Probe

General service tool 
(jumper)

Continuity check and voltage 
measurement at harness wire or 
connector

a. For checking connector pin 

contact pressure

b. For checking power supply 

circuit

c. For checking power supply 

circuit

d. For connecting a locally 

sourced tester

MB992006
Extra fine probe

−

Continuity check and voltage 
measurement at harness wire or 
connector

Tool

Tool number and 
name

Supersession

Application

MB991223

a

d

c

b

DO NOT USE

BA

MB992006

THEFT ALARM

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CHASSIS ELECTRICAL

54A-686

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Ensure that the ignition switch is at the "LOCK" (OFF) 

position.

2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824 

and the personal computer.

4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch of special tool MB991824 to the "ON" 

position.
NOTE: When special tool MB991824 is energized, special 
tool MB991824 indicator light will be illuminated in a green 
color.

7. Start the scan tool system on the personal computer.
NOTE: Disconnecting scan tool MB991958 is the reverse of the 
connecting sequence, making sure that the ignition switch is at 
the "LOCK" (OFF) position.

HOW TO READ AND ERASE DIAGNOSTIC 
TROUBLE CODES

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

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

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
NOTE: If the battery voltage is low, diagnostic trouble codes will 
not be set. Check the battery if scan tool MB991958 does not 
display.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle 

Information" is displayed, check the contents.

5. Select "ETACS" from "System List", and press the "OK" 

button.
NOTE: When the "Loading Option Setup" list is displayed, 
check the applicable item.

6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

THEFT ALARM

TSB Revision

CHASSIS ELECTRICAL

54A-687

HOW TO DIAGNOSE THE CAN BUS LINES

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

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

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it 

matches the vehicle being diagnosed.

• If they match, go to Step 8.

• If not, go to Step 5.

5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again 

that it matches the vehicle being diagnosed.

• If they match, go to Step 8.

• If not, go to Step 5.

8. Select the "OK" button.
9. When the optional equipment screen is displayed, choose 

the one which the vehicle is fitted with, and then select the 
"OK" button.

TROUBLE SYMPTOM CHART

M1547001500260

Trouble symptom

Inspection 
Procedure 
No.

Reference 
page

The theft-alarm is not armed (the theft-alarm indicator does not illuminate).

1

P.54A-688

The interior alarm does not work normally while the theft-alarm is triggered.

2

P.54A-694

Theft-alarm horn does not sound while the theft-alarm system is triggered.

3

P.54A-701

Horn (HIGH or LOW) does not sound while the theft-alarm system is triggered.

4

P.54A-701

THEFT ALARM

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CHASSIS ELECTRICAL

54A-688

SYMPTOM PROCEDURES

Inspection Procedure 1: The theft-alarm is not armed (the theft-alarm indicator does not illuminate).

CAUTION

Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communi-
cation circuit are normal.

Theft-alarm Indicator Circuit

ETACS-
ECU

RELAY
BOX

FUSIBLE
LINK

36

CENTER
PANEL
UNIT