No.2 HEADLIGHT AUTO LEVELING SYSTEM DOES NOT ADJUST OPTICAL AXIS OF THE HEADLIGHTS ACCORDING TO VEHICLE POSITION[HEADLIGHT AUTO LEVELING SYSTEM]

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2

Headlight auto leveling system does not adjust optical axis of the headlights according to vehicle position
POSSIBLE CAUSE
•  Headlight leveling actuator malfunction
•  Auto leveling control module malfunction
•  Auto leveling sensor malfunction
•  Improper installation of the auto leveling sensor
•  Open or short to ground circuit in the wiring harness between instrument cluster terminal 2O and auto leveling control module terminal M

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT AUTO LEVELING WARNING LIGHT ILLUMINATION
•  Turn the ignition switch to the ON position.
•  Inspect the auto leveling warning light condition.
•  Does the auto leveling warning light illuminate 3 seconds after turning the ignition switch to the ON position.
Yes
Perform the symptom “No.1 Auto leveling warning light illuminates when the ignition switch turned to ON position” troubleshooting procedure.
No
Go to the next step.
2
INSPECT IF MALFUNCTION IS IN AUTO LEVELING SENSOR OR ELSEWHERE
•  Does the malfunction appear on both sides?
Yes
Go to Step 5.
No
Go to the next step.
3
INSPECT IF MALFUNCTION IS IN WIRING HARNESS BETWEEN AUTO LEVELING CONTROL MODULE AND HEADLIGHT LEVELING ACTUATOR
•  Inspect for an open or short circuit in the wiring harness where the auto leveling function does not operate.
Right-side:
―  Auto leveling control module terminal E— right-side headlight leveling actuator terminal A
―  Auto leveling control module terminal H— right-side headlight leveling actuator terminal B
―  Auto leveling control module terminal F— right-side headlight leveling actuator terminal C
Left-side:
―  Auto leveling control module terminal C—left-side headlight leveling actuator terminal A
―  Auto leveling control module terminal G—left-side headlight leveling actuator terminal B
―  Auto leveling control module terminal D—left-side headlight leveling actuator terminal C
Is there an open or short circuit?
Yes
Repair or replace for open or short circuit.
No
Go to the next step.
4
INSPECT IF MALFUNCTION IS IN HEADLIGHT LEVELING ACTUATOR OR ELSEWHERE
•  Replace the suspected front combination light.
•  Does the auto leveling adjust the optical axis of the headlights according to the vehicle position?
Yes
Troubleshooting completed.
(Malfunction is in headlight leveling actuator.)
No
Replace the auto leveling control module.
(See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION.)
5
INSPECT AUTO LEVELING SENSOR INSTALLATION
•  Inspect the auto leveling sensor installation (bent or damaged bracket, or dislocated link).
•  Is the auto leveling sensor installed properly?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part, or install it properly.
6
INSPECT AUTO LEVELING SENSOR
•  Inspect the auto leveling sensor.
•  Is the auto leveling sensor normal?
Yes
Go to the next step.
No
Replace the auto leveling sensor.
(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
7
INSPECT IF MALFUNCTION IS IN VEHICLE SPEED SIGNAL LINE OR ELSEWHERE
•  Turn the ignition to the off position.
•  Disconnect the instrument cluster and auto leveling control module connectors.
•  Verify the continuity between the following:
―  Auto leveling control module terminal M—GND (Normal condition: No continuity)
―  Auto leveling control module terminal M—instrument cluster terminal 2O (Normal condition: Continuity)
•  Is the continuity normal?
Yes
Replace the auto leveling control module.
(See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION.)
No
Repair or replace for an open or short circuit.