Mitsubishi Outlander XL. Manual — part 1004

Headlight Levelling Unit Circuit

HEADLIGHT ASSEMBLY
[HEADLIGHT LEVELING
UNIT (LH)]

HEADLIGHT ASSEMBLY
[HEADLIGHT LEVELING
UNIT (RH)]

HEADLIGHT
AUTOMATIC
LEVELING-ECU

MOTOR
DRIVE
CIRCUIT

CPU

CPU

VOLTAGE
COMPARISON
CIRCUIT

MOTOR
DRIVE
CIRCUIT

VOLTAGE
COMPARISON
CIRCUIT

ZC6008710009

Connector: A-56

A-56 (B)

LIGHTING

54Ac-89

DIAGNOSIS

ZC6008720006

Connector: A-37

A-37 (B)

ZC6008760030

Connector: C-110

TECHNICAL DESCRIPTION (COMMENT)
If either automatic leveling does not operate, the wiring harness
and connector(s) between the headlight automatic leveling-ECU
and the headlight leveling unit, or the headlight assembly
(headlight leveling unit) may have a problem.

TROUBLESHOOTING HINTS

｠

Malfunction of headlight assembly (headlight leveling unit)

｠

The wiring harness or connectors may have loose, corroded,
or damaged terminals, or terminals pushed back in the
connector

DIAGNOSIS

STEP 1. Check headlight leveling unit.
Perform a leveling motor drive test of the headlight leveling unit
to check that the motor is driven. Refer to P.54Ac-177.

Q:Do Headlight leveling unit work 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 (The left leveling motor is not driven.):

Go to Step 2.

NO (The right leveling motor is not driven.):

Go to Step 5.

STEP 2. Check headlight automatic leveling-ECU connector
C-110, Headlight leveling unit (LH) connector A-37 for loose,

54Ac-90

LIGHTING

DIAGNOSIS

corroded or damaged terminals, or terminals pushed back
in the connector.

Q:Is headlight automatic leveling-ECU connector C-110,

Headlight leveling unit (LH) connector A-37 in good

condition?

YES:

Go to Step 3.

NO:

Repair the damaged parts.

STEP 3. Check wiring harness between headlight automatic
leveling-ECU connector C-110 (terminal No. 2/3/4) and
headlight leveling-unit (LH) connector A-37 (terminal No.
11/10/12).

Q:Is headlight automatic leveling-ECU connector C-110

(terminal No. 2/3/4) and headlight leveling-unit (LH)

connector A-37 (terminal No. 11/10/12) in good

condition?

YES:

Go to Step 4.

NO:

Repair the wiring harness.

STEP 4. Retest the system.
Check that the automatic leveling of the left headlight operates
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 headlight assembly (LH).

STEP 5. Check headlight automatic leveling-ECU connector
C-110,Headlight leveling unit (RH) connector A-56 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

Q:Is

headlight

automatic

leveling-ECU

connector

C-110,Headlight leveling unit (RH) connector A-56 in

good condition?

YES:

Go to Step 6.

NO:

Repair the damaged parts.

STEP 6. Check wiring harness between headlight automatic
leveling-ECU connector C-110 (terminal No. 11/12/13) and
headlight leveling-unit (LH) connector A-37 (terminal No.
11/10/12).

Q:Is headlight automatic leveling-ECU connector C-110

(terminal No. 11/12/13) and headlight leveling-unit (LH)

connector A-37 (terminal No. 11/10/12) in good

condition?

YES:

Go to Step 7.

NO:

Repair the wiring harness.

LIGHTING

54Ac-91

DIAGNOSIS

STEP 7. Retest the system.
Check that the automatic leveling of the right headlight operates
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 headlight assembly (RH)

Inspection Procedure 4: The headlight automatic leveling warning is not displayed.

M15410900110USA0000010000

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

54Ac-92

LIGHTING

DIAGNOSIS