Mitsubishi Outlander GS45X. Manual - part 51

HEADLIGHT

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CHASSIS ELECTRICAL

54A-201

STEP 2. Using scan tool MB991958, read the ETACS-ECU 
diagnostic trouble code
(1) Turn the ignition switch to the "ON" position.
(2) Check whether the ETACS-ECU 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-732

)

NO :  Go to Step 3.

STEP 3. Check the keyless entry system operation
Check that the keyless entry system operation normally.
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Troubleshoot the keyless entry system. Refer to 

GROUP 42B, Troubleshooting 

P.42B-128

 <KOS> or 

GROUP 42C, Troubleshooting 

P.42C-80

 <WCM>.

STEP 4. Check the tail lights and headlights.
When the lighting switch is operated, check that the tail lights 
and headlights illuminate/go off normally.
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Troubleshoot the tail lights and headlights. Refer to 

trouble symptom chart 

P.54A-153

.

STEP 5. Retest the system.
Check that the welcome light function works normally.
Q: Is the check result normal?

YES : The trouble can be an intermittent malfunction (Refer 

to GROUP 00 

− How to use 

Troubleshooting/inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-15

).

NO :  Replace the ETACS-ECU.

Inspection Procedure 14: The coming home light function does not work normally.

CAUTION

Whenever the ECU is replaced, ensure that the 
power supply circuit, the ground circuit and the 
communication circuit are normal.

.

TECHNICAL DESCRIPTION (COMMENT)

When the coming home light function does not oper-
ate normally, the keyless entry system or the 
ETACS-ECU may have a problem. Or, the coming 
home light function may have been set to disabled 
using the customization function.

.

TROUBLESHOOTING HINTS

• Malfunction of the keyless entry system

• Malfunction of the ETACS-ECU

HEADLIGHT

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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. Using scan tool MB991958, Check the 
configuration function.

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-123

."

(2) Turn the ignition switch to the "ON" position.
(3) Check that any one of the followings other than "Disabled" 

is set for "Coming home light" with a customization function.

• 15 sec

• 30 sec

• 60 sec

• 180 sec

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is it set to other than "Disabled"?

YES : Go to Step 2.
NO :  Set "Coming home light" to any one other than 

"Disabled" with a customization function (Refer to 

P.54A-210

).

STEP 2. Using scan tool MB991958, read the ETACS-ECU 
diagnostic trouble code
(1) Turn the ignition switch to the "ON" position.
(2) Check whether the ETACS-ECU 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-732

)

NO :  Go to Step 3.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

HEADLIGHT

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STEP 3. Using scan tool MB991958, check data list
Use the ETACS-ECU data list to check the signals related to 
the front dome light.

• Turn the ignition switch to the LOCK (OFF) position.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Troubleshoot the ETACS-ECU. Refer to Inspection 

Procedure 2 "The ignition switch (IG1) signal is not 
received" 

P.54A-788

.

STEP 4. Check the headlights.
When the lighting switch is operated, check that the headlights 
illuminate/go off normally.
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Troubleshoot the headlights. Refer to trouble 

symptom chart 

P.54A-153

.

STEP 5. Retest the system.
Check that the coming home light function works normally.
Q: Is the check result normal?

YES : The trouble can be an intermittent malfunction (Refer 

to GROUP 00 

− How to use 

Troubleshooting/inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-15

).

NO :  Replace the ETACS-ECU.

Item No.

Item name

Normal 
condition

Item 254

IG voltage

1 V or less

HEADLIGHT

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DATA LIST REFERENCE TABLE

M1540103800229

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 bright

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