Mitsubishi Evolution X. Manual - part 936

HEADLIGHT

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CHASSIS ELECTRICAL

54A-105

DIAGNOSIS

STANDARD FLOW OF DIAGNOSTIC 
TROUBLESHOOTING

M1540104200167

Refer to GROUP 00,  How to use Troubleshooting/inspection 
Service Points, Troubleshooting Contents 

P.00-7

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DIAGNOSTIC FUNCTION

M1540104300090

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

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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)

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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

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CHASSIS ELECTRICAL

54A-106

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 M.U.T.-III 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

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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)

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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

HEADLIGHT

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CHASSIS ELECTRICAL

54A-107

DIAGNOSTIC TROUBLE CODE CHART

M1540101400269

CAUTION

On troubleshooting, if the ignition switch is turned ON while disconnecting connector(s), diagnostic 
trouble code(s) associated with other system may be set. On completion, confirm all systems for 
diagnostic trouble code(s). If diagnostic trouble code(s) are set, erase them all.
ETACS-ECU

LIN

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC B16A2: Blown turn-signal light (LH) bulb

Diagnostic trouble code No. Diagnostic item

Reference page

B16A2

Blown turn-signal light (LH) bulb

P.54A-107

B16A3

Turn-signal light (LH) short circuit

P.54A-113

B16A4

Blown turn-signal light (RH) bulb

P.54A-116

B16A5

Turn-signal light (RH) short circuit

P.54A-121

Diagnostic trouble code No. Diagnostic item

Reference page

L0432

RLS RS adaptation error

P.54A-124

L0434

RLS rain sensor error

P.54A-125

L0436

RLS light sensor error

Turn-Signal Lights (LH) Circuit

ETACS-
ECU

REAR
COMBINATION
LIGHT
(TURN: LH)

SIDE TURN-
SIGNAL LIGHT
(LH)

HEADLIGHT
ASSEMBLY
(TURN: LH)

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CHASSIS ELECTRICAL

54A-108

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TROUBLE JUDGMENT

When the left bulb of turn-signal light is blown, the 
ETACS-ECU sets DTC B16A2.

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TECHNICAL DESCRIPTION (COMMENT)

The ETACS-ECU sets DTC B16A2 under the follow-
ing conditions.

• If there is a malfunction to the left turn-signal light 

bulb, the blown left bulb counter counts once 
when the illumination of hazard or turn-signal 
light (left side) is attempted.

• After the bulb counter reaches "3," DTC B16A2 is 

set.

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TROUBLESHOOTING HINTS

• Malfunction of turn-signal light bulb (left)

• Malfunction of the ETACS-ECU

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

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)

STEP 1. Bulb check.
Check whether the left turn-signal light illuminates normally.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Replace the bulb of turn-signal light which does not 

illuminate.

AC708949AG

Connectors: A-12, A-40

A-12 (B)

A-40 (B)

AC708972

Connectors: C-304, C-311

AW

C-311

C-304

AC708955AL

Connector: D-17

D-17 (BR)

AC708970AH

Connector: F-25