Mitsubishi Outlander XL. Manual — part 1001

STEP 3. Using scan tool MB991958, Check whether the
diagnostic trouble code is reset.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect scan
tool P.54Ac-58."

(2)

Turn the ignition switch to the "ON" position.

(3)

Erase the DTC.

(4)

Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.

(5)

Check if DTC is set.

Q:Is DTC 31 set?

YES:

Go to Step 4.

NO:

The trouble, such as a poor connector connection from

the headlight leveling unit (LH) to headlight automatic
leveling-ECU or an open circuit of wiring harness, 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.)

STEP 4. Check headlight leveling unit (RH) connector
A-56,headlight automatic leveling-ECU connector C-110 for
loose, corroded or damaged terminals, or terminals pushed
back in the connector.

Q:Is headlight leveling unit (RH) connector A-56,headlight

automatic leveling-ECU connector C-110 in good

condition?

YES:

Go to Step 5.

NO:

Repair the defective connector.

STEP 5. Check the wiring harness between headlight
leveling unit (RH) connector A-56 (terminal No. 10) and
headlight automatic leveling-ECU connector C-110
(terminal No. 12).

Q:Is wiring harness between headlight leveling unit (RH)

connector A-56 (terminal No. 10) and headlight automatic

leveling-ECU connector C-110 (terminal No. 12) in good

condition?

YES:

Go to Step 6.

NO:

Repair the wiring harness.

STEP 6. Using scan tool MB991958, Check whether the
diagnostic trouble code is reset.

(1)

Turn the ignition switch to the "ON" position.

(2)

Erase the DTC.

(3)

Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.

(4)

Check if DTC is set.

Q:Is DTC 31 set?

LIGHTING

54Ac-77

DIAGNOSIS

YES:

Go to Step 7.

NO:

The trouble, such as a poor connector connection from

the headlight leveling unit to headlight automatic
leveling-ECU or an open circuit of wiring harness, 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.)

STEP 7. Using scan tool MB991958, Check whether the
diagnostic trouble code is reset.
Replace the headlight assembly (LH), and then check again if
DTC 31 is set.

(1)

Turn the ignition switch to the "ON" position.

(2)

Erase the DTC.

(3)

Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.

(4)

Check if DTC is set.

Q:Is DTC 31 set?

YES:

Go to Step 8.

NO:

The procedure is complete.

STEP 8. Using scan tool MB991958, Check whether the
diagnostic trouble code is reset.
Replace the headlight assembly (RH), and then check again if
DTC 31 is set.

(1)

Turn the ignition switch to the "ON" position.

(2)

Erase the DTC.

(3)

Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.

(4)

Check if DTC is set.

Q:Is DTC 31 set?

YES:

Replace the headlight automatic leveling-ECU.

NO:

The procedure is complete.

TROUBLE SYMPTOM CHART

M15410900009USA0000010001

Trouble symptom

Inspection
Procedure No.

Reference
page

The diagnostic trouble code is not set.

1

P.54Ac-79

Neither right nor left automatic leveling operates.

2

P.54Ac-84

Either automatic leveling does not operate.

3

P.54Ac-88

The headlight automatic leveling warning is not displayed.

4

P.54Ac-92

The headlight automatic leveling warning light does not go off.

5

P.54Ac-96

54Ac-78

LIGHTING

DIAGNOSIS

SYMPTOM PROCEDURES

Inspection Procedure 1: The diagnostic trouble code is not set.

M15410900095USA0000010000

Before replacing the ECU, ensure that the power supply
circuit, the ground circuit and the communication circuit are
normal.

LIGHTING

54Ac-79

DIAGNOSIS

Diagnosis Connector Communication Circuit

FUSIBLE
LINK

34

DATA LINK
CONNECTOR

FRONT SIDE

HEADLIGHT AUTOMATIC
LEVELING-ECU

ETACS-
ECU

IG1
RELAY

54Ac-80

LIGHTING

DIAGNOSIS