THE HEADLIGHT AUTO LEVELING SYSTEM DOES NOT OPERATE IN RESPONSE TO VEHICLE POSTURE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS)]

id0903k9013800

Note

• If there is any vehicle malfunction complaint lodged by a customer, perform FOREWORD [ADAPTIVE FRONT LIGHTING SYSTEM (AFS)] malfunction diagnosis according to the troubleshooting procedure.

Description

• The headlight auto-leveling system does operate in response to the number of occupants, cargo load in trunk, and the fuel level.

• One side of the headlight leveling actuator does not operate.

Possible malfunction

• Short or open circuit in the wiring harness between headlight leveling actuator and AFS control module

• Headlight leveling actuator malfunction

• AFS control module malfunction

• Poor installation of the auto leveling sensor

• Auto leveling sensor malfunction

Diagnostic Procedure

Step

Inspection

Action

1

DETERMINE IF MALFUNCTIONING LOCATION IS AUTO-LEVELING SENSOR

•  Verify the malfunction symptom.

•  Do both sides of the headlight auto leveling system not operate?

Yes

Go to Step 4.

No

Go to the next step.

2

LEVELING OPERATION SIGNAL INSPECTION

•  Verify the headlight leveling actuator operation using the M-MDS.
(See HEADLIGHT LEVELING ACTUATOR OPERATION CHECK MODE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS)].)

•  Is the headlight leveling actuator normal?

Yes

Go to Step 6.

No

Go to the next step.

3

LEVELING OPERATION SIGNAL CIRCUIT INSPECTION

•  Inspect wiring harness between AFS control module on the side of the auto leveling system which does operate and the headlight leveling actuator.

RH

―  AFS control module terminal O and headlight leveling actuator terminal F

LH

―  AFS control module terminal O and headlight leveling actuator terminal F

•  Is there any open or short circuit in the wiring harness?

Yes

Repair or replace for an open or short circuit to the wiring harness.

No

Go to the next step.

4

HEADLIGHT LEVELING INSPECTION

•  Replace the front combination light on the side of the auto-leveling system that is not operating.
(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)

•  Does the auto-leveling system operate correctly?

Yes

Troubleshooting completed.

No

Replace the AFS control module.

(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)

5

INSPECT WIRING HARNESS BETWEEN HEADLIGHT LEVELING ACTUATOR AND AFS CONTROL MODULE

•  Inspect the wiring harness between the following terminals.

―  AFS control module terminal P and headlight leveling actuator (LH/RH) terminal I

―  AFS control module terminal O and headlight leveling actuator (LH/RH) terminal F

―  AFS control module terminal M and headlight leveling actuator (LH/RH) terminal L

•  Is there any open or short circuit in the wiring harness?

Yes

Repair or replace for an open or short circuit to the wiring harness.

No

Go to the next step.

6

VERIFY AUTO-LEVELING SENSOR INSTALLATION

•  Verify the auto-leveling sensor installation condition?

•  Is a bracket bent, is there damage, or is a link disconnected?

Yes

Repair or replace the malfunctioning location.

No

Go to the next step.

7

AUTO LEVELING SENSOR INSPECTION

•  Inspect the auto leveling sensor.
(See AUTO LEVELING SENSOR INSPECTION.)

•  Is the auto leveling sensor normal?

Yes

Replace the AFS control module.

(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)

No

Replace the auto leveling sensor.

(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)

Step	Inspection		Action
1	DETERMINE IF MALFUNCTIONING LOCATION IS AUTO-LEVELING SENSOR • Verify the malfunction symptom. • Do both sides of the headlight auto leveling system not operate?	Yes	Go to Step 4.
1		No	Go to the next step.
2	LEVELING OPERATION SIGNAL INSPECTION • Verify the headlight leveling actuator operation using the M-MDS. (See HEADLIGHT LEVELING ACTUATOR OPERATION CHECK MODE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS)].) • Is the headlight leveling actuator normal?	Yes	Go to Step 6.
2		No	Go to the next step.
3	LEVELING OPERATION SIGNAL CIRCUIT INSPECTION • Inspect wiring harness between AFS control module on the side of the auto leveling system which does operate and the headlight leveling actuator. RH ― AFS control module terminal O and headlight leveling actuator terminal F LH ― AFS control module terminal O and headlight leveling actuator terminal F • Is there any open or short circuit in the wiring harness?	Yes	Repair or replace for an open or short circuit to the wiring harness.
3		No	Go to the next step.
4	HEADLIGHT LEVELING INSPECTION • Replace the front combination light on the side of the auto-leveling system that is not operating. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.) • Does the auto-leveling system operate correctly?	Yes	Troubleshooting completed.
4		No	Replace the AFS control module. (See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)
5	INSPECT WIRING HARNESS BETWEEN HEADLIGHT LEVELING ACTUATOR AND AFS CONTROL MODULE • Inspect the wiring harness between the following terminals. ― AFS control module terminal P and headlight leveling actuator (LH/RH) terminal I ― AFS control module terminal O and headlight leveling actuator (LH/RH) terminal F ― AFS control module terminal M and headlight leveling actuator (LH/RH) terminal L • Is there any open or short circuit in the wiring harness?	Yes	Repair or replace for an open or short circuit to the wiring harness.
5		No	Go to the next step.
6	VERIFY AUTO-LEVELING SENSOR INSTALLATION • Verify the auto-leveling sensor installation condition? • Is a bracket bent, is there damage, or is a link disconnected?	Yes	Repair or replace the malfunctioning location.
6		No	Go to the next step.
7	AUTO LEVELING SENSOR INSPECTION • Inspect the auto leveling sensor. (See AUTO LEVELING SENSOR INSPECTION.) • Is the auto leveling sensor normal?	Yes	Replace the AFS control module. (See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)
7		No	Replace the auto leveling sensor. (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)