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 system does not adjust optical axis of the headlights for vehicle posture
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DESCRIPTION
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• Auto leveling does not adjust optical axis of headlights according to cargo and passenger weight conditions
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POSSIBLE CAUSE
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• Headlight auto leveling actuator malfunction
• Auto leveling control module malfunction
• Auto leveling sensor malfunction
• Auto leveling sensor is not installed properly
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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 ILLUMINATION
• Switch the ignition to ON.
• Verify that the auto leveling warning light condition.
• Does the auto leveling warning light illuminate 3 s after switching the ignition to ON?
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Yes
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Go to symptom “No.1 headlight auto leveling malfunction indicator light illuminates when the ignition is switched to on” 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
• Switch the ignition to off.
• Switch the ignition to ON.
• Turn the headlights on at low beam.
• Jump DLC-2 terminal B to ground using a jumper wire.
• Inspect the headlight optical axis movement.
• Does the optical axis move up and down on both sides?
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Yes
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Go to the next step.
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No
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Go to Step 5.
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3
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS BETWEEN HEADLIGHT AUTO LEVELING ACTUATOR AND AUTO LEVELING CONTROL MODULE OR ELSEWHERE
• Inspect for an open or short circuit in the wiring harness on the side where the auto leveling function does not operate.
RH:
LH:
• Is an open or short circuit detected?
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Yes
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Repair or replace the malfunctioning part for an 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 AUTO LEVELING ACTUATOR OR ELSEWHERE
• Replace the front combination light on the suspected side.
• Perform Step 2 inspection procedure again.
• Does the optical axis move up and down?
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Yes
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Troubleshooting is completed.
(The 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 AUTO LEVELING ACTUATOR
• Inspect for an open or short circuit in the wiring harness on the side where the auto leveling function does not operate.
RH:
LH:
• Is an open or short circuit detected?
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Yes
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Repair or replace for an open or short to the ground 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 AUTO LEVELING SENSOR INSTALLATION
• Inspect the auto leveling sensor installation (bent or damaged bracket, or dislocated link).
• Are the auto leveling sensors 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 the malfunctioning part, then install the auto leveling sensor properly.
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7
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INSPECT AUTO LEVELING SENSOR
• Inspect the auto leveling sensor.
• Is the 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 auto leveling sensor.
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8
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VERIFY IF MALFUNCTION IS NO VEHICLE SPEED SIGNAL OR AUTO LEVELING CONTROL MODULE
• Verify that the speedometer indication.
• Does the speedometer indicate properly?
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Yes
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Replace the auto leveling control module.
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No
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Perform the instrument cluster symptom troubleshooting “No.8 Speedometer indication is defective” procedure.
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