Mitsubishi Evolution X. Manual - part 953

HEADLIGHT

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CHASSIS ELECTRICAL

54A-173

STEP 2. Using scan tool MB991958, diagnose the CAN bus 
line.

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) Connect scan tool MB991958. Refer to "How to connect 

scan tool (M.U.T.-III) 

P.54A-105

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 3.
NO :  Repair the CAN bus line (Refer to GROUP 54C, 

Diagnosis 

P.54C-14

).

STEP 3. Using scan tool MB991958, read the diagnostic 
trouble code.
Check if diagnostic trouble code is set to the ETACS-ECU.
(1) Turn the ignition switch to the "ON" position.
(2) Check whether the ETACS-ECU related DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Diagnose the ETACS-ECU. Refer to ETACS, 

Diagnosis 

P.54A-582

.

NO :  Go to Step 4.

STEP 4. Using scan tool MB991958, check actuator test. 
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the actuator test mode.

• Item 7: Indicator1

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result normal?

YES : Replace the ETACS-ECU.
NO :  Replace the combination meter.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

HEADLIGHT

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CHASSIS ELECTRICAL

54A-174

DATA LIST REFERENCE TABLE

M1540103800133

LIN <LIGHTING CONTROL SENSOR (LIGHT SENSOR)>

Item No. Scan tool display

Check conditions

Normal conditions

7001

RLS IG1

When the ignition switch is in the "LOCK" 
or "ACC" position

OFF

When the ignition switch is in the "ON" or 
"START" position

ON

7002

RLS Light sensor sensitivity When the customize value of lighting 

control sensor sensitivity is set to Level 1 
(fast)

Level 1 (+) bright

When the customize value of lighting 
control sensor sensitivity is set to Level 2 
(slightly fast)

Level 2

When the customize value of lighting 
control sensor sensitivity is set to Level 3 
(normal)

Level 3

When the customize value of lighting 
control sensor sensitivity is set to Level 4 
(slightly slow)

Level 4 (

−) dark

When the customize value of lighting 
control sensor sensitivity is set to Level 5 
(slow)

Level 5 (

−) dark

7004

RLS Radio ACC

When the ignition switch is in the "LOCK" 
or "START" position

OFF

When the ignition switch is in the "ACC" or 
"ON" position

ON

7007

RLS Vehicle speed

Perform a test run of the vehicle.

The values displayed 
on the speedometer 
and the scan tool 
MB991958 are almost 
the same.

7009

RLS Low beam "ON" 
request

When the lighting control sensor area is 
bright

OFF

When the lighting control sensor area is 
dark

ON

7010

RLS judgment illuminance 
output

When the lighting control sensor area 
changes from dark to bright

The value displayed on 
the scan tool 
MB991958 increases.

When the lighting control sensor area 
changes from bright to dark

The value displayed on 
the scan tool 
MB991958 decreases.

7011

RLS Taillight "ON" request

When the lighting control sensor area is 
bright

OFF

When the lighting control sensor area is 
dark

ON

HEADLIGHT

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CHASSIS ELECTRICAL

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ON-VEHICLE SERVICE

HEADLIGHT AIMING

M1540100500304

PRE-AIMING INSTRUCTIONS (LOW-BEAM)

.

1. Inspect for rusted or faulty headlight assemblies.
2. These conditions must be corrected before a satisfactory 

adjustment can be made.

3. Inspect tire inflation, and adjust if necessary.
4. If the fuel tank is not full, place a weight in the trunk of the 

vehicle to simulate weight of a full tank [3 kg (6.6 pounds) 
per gallon].

5. There should be no other load in the vehicle other than 

driver or substituted weight of approximately 68 kg (150 
pounds) placed in driver's position.

6. Turn the headlight leveling switch to the switch position "0." 

<Vehicles with headlight manual leveling system>

7. Thoroughly clean headlight lenses.
8. Place the vehicle on a level floor, perpendicular to a flat 

screen 7.62 m (25.0 ft) away from the bulb center-marks on 
the headlight lens.

9. Rock vehicle sideways to allow vehicle to assume its normal 

position.

10.Bounce the front suspension through three (3) oscillations 

by applying the body weight to hood or bumper.

7012

RLS Tunnel detect output

When the lighting control sensor area is 
bright

OFF

When the lighting control sensor area is 
dark

ON

7014

RLS specification

−

EU

7015

RLS ECU Diagnostic 
Version

−

−

7016

RLS ECU Hardware 
Version

−

−

7017

RLS ECU Software Version −

−

7018

RLS ECU Part number

−

8634A001

7019

RLS ECU Serial number

−

−

Item No. Scan tool display

Check conditions

Normal conditions

HEADLIGHT

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11.Set the distance between the screen and the bulb center 

marks of the headlight as shown in the illustration.

12.Four lines of adhesive tape (or equivalent markings) are 

required on screen or wall:

(1) Position a vertical tape or mark so that it is aligned with 

the vehicle center line.

(2) Measure the distance from the center-marks on the 

headlight lens to the floor [ reference value: 679.5 mm 
(26.75 inches)]. Transfer the measurement to the screen. 
Horizontal tape or mark on the screen is for reference of 
vertical adjustment.

(3) Measure the distance from the center line of the vehicle 

to the center of each headlight. Transfer the 
measurement to the screen. Vertical tape or mark on the 
screen with reference to the center line of each headlight 
bulb.

HEADLIGHT ADJUSTMENT (LOW-BEAM)

1. The low-beam headlight will project on the screen upper 

edge of the beam (cut-off).

AC709178AB

(1)

(2)

(3)

Headlight center

Vehicle center line

(3)

7.62 m (25.0 ft)

Screen

Headlight center
(Discharge bulb)

Headlight center
(Halogen bulb)