No.2 AUTO LEVELING SYSTEM DOES NOT ADJUST OPTICAL AXIS OF THE HEADLIGHTS FOR VEHICLE POSTURE [HEADLIGHT AUTO LEVELING SYSTEM]
id0903d0930000
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2
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Auto leveling does not adjust optical axis of the headlights for vehicle posture
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POSSIBLE CAUSE
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• Headlight leveling actuator malfunction
• auto leveling control module malfunction
• Auto leveling sensor malfunction
• Improper installation of auto leveling sensor
• Open or short to ground circuit in wiring harness between auto leveling control module terminal W and DSC HU/CM terminal AA
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY AUTO LEVELING WARNING LIGHT ILLUMINATEION
• Turn the ignition switch to ON position.
• Verify that the auto leveling warning light condition.
• Does the auto leveling warning light illuminate from turning the ignition switch to ON 3 seconds after?
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Yes
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Perform the symptom “No.1 Auto leveling warning light illuminates when the ignition switch turned to ON position” troubleshooting procedure.
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No
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Go to the next step.
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2
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INSPECT IF MALFUNCTION IS IN AUTO LEVELING SENSOR OR ELSEWHERE
• Is the malfunction appears both side?
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Yes
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Go to Step 5.
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No
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Go to the next step.
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3
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS BETWEEN AUTO LEVELING CONTROL MODULE AND HEADLIGHT LEVELING ACTUATOR
• Inspect for open or short circuit in wiring harness at auto leveling function does not operate.
RH:
LH:
• Is open or short circuit detected?
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Yes
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Repair or replace for open or short circuit.
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No
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Go to the next step.
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4
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INSPECT IF MALFUNCTION IS IN HEADLIGHT LEVELING ACTUATOR OR ELSEWHERE
• Replace the suspected front combination light.
• Does the auto leveling adjust optical axis of the headlights for vehicle posture?
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Yes
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Troubleshooting completed. (Malfunction is in headlight leveling actuator.)
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No
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Replace the auto leveling control module.
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5
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS BETWEEN AUTO LEVELING CONTROL MODULE AND HEADLIGHT LEVELING ACTUATOR
• Inspect for open or short circuit in wiring harness following:
RH:
LH:
• Is open or short circuit detected?
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Yes
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Repair or replace for open or short circuit.
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No
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Go to the next step.
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6
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INSPECT FRONT AND REAR AUTO LEVELING SENSOR INSTALLATION
• Inspect front and rear auto leveling sensor installation (bend or damaged of bracket, or dislocated link).
• Are front and rear auto leveling sensor installed properly?
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Yes
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Go to the next step.
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No
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Repair or replace malfunctioning part, or install properly.
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7
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IINSPECT FRONT AUTO LEVELING SENSOR
• Inspect the front auto leveling sensor.
• Is the front auto leveling sensor normal?
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Yes
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Go to the next step.
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No
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Replace the front auto leveling sensor.
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8
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INSPECT REAR AUTO LEVELING SENSOR
• Inspect the rear auto leveling sensor.
• Is the rear auto leveling sensor normal?
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Yes
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Go to the next step.
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No
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Replace the rear auto leveling sensor.
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9
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INSPECT IF MALFUNCTION IS IN VEHICLE SPEED SIGNAL LINE OR ELSEWHERE
• Turn the ignition to OFF.
• Disconnect the instrument cluster and auto leveling control module connectors.
• Verify that the continuity for following:
• Are there continuity normal?
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Yes
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Replace the auto leveling control module.
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No
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Repair or replace for open or short circuit.
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