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