No.2 AUTO LEVELING DOES NOT ADJUST OPTICAL AXIS OF THE HEADLIGHTS FOR VEHICLE POSTURE [HEADLIGHT AUTO LEVELING SYSTEM]
id0903d0899200
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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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DESCRIPTION
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• Auto leveling does not adjust optical axis of the headlights for cargo and passenger weight conditions when the vehicle speed above 30 km/h {19 mph}.
• Left or right side auto leveling does not operate.
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POSSIBLE CAUSE
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• Headlight leveling actuator the malfunction
• Auto leveling control module the malfunction
• Front auto leveling sensor the malfunction (With front auto leveling sensor) (DTC 4 (front auto leveling sensor))
• Rear auto leveling sensor the malfunction (DTC 3 (rear auto leveling sensor))
• Improper installation of front auto leveling sensor (With front auto leveling sensor)
• Improper installation of rear auto leveling sensor
• CAN signal wiring harness malfunction (does not receive vehicle speed signal)
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Diagnostic procedure
With front auto leveling sensor
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STEP |
INSPECTION |
ACTION |
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1
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CONFIRM HEADLIGHT AUTO LEVELING SYSTEM DTC
• Retrieve the headlight auto leveling system DTCs.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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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 THE MALFUNCTION IS IN AUTO LEVELING SENSOR OR ELSEWHERE
• Switch the ignition to off.
• Switch the ignition to ON.
• Turn on the head light in low position.
• Jump the DLC-2 terminal B to GND using a jumper wire.
• Verify that the optical axis movement.
• Does the optical axis move up and down both side?
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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 THE 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.
Right-side:
Left-side:
• 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 THE MALFUNCTION IS IN HEADLIGHT LEVELING ACTUATOR OR ELSEWHERE
• Replace the suspected side front combination light.
• Does the auto leveling adjust optical axis of the headlight for vehicle posture?
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Yes
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Troubleshooting 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 THE MALFUNCTION IS IN WIRING HARNESS BETWEEN AUTO LEVELING CONTROL MODULE AND HEADLIGHT LEVELING ACTUATOR
• Inspect for open or short circuit in wiring harness.
Right-side:
Left-side:
• 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 the malfunctioning part, or install properly.
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7
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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.7 Speedometer indication is defective” procedure.
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Without front auto leveling sensor
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STEP |
INSPECTION |
ACTION |
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|---|---|---|---|
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1
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CONFIRM HEADLIGHT AUTO LEVELING SYSTEM DTC
• Retrieve the headlight auto leveling system DTCs.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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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 THE MALFUNCTION IS IN AUTO LEVELING SENSOR OR ELSEWHERE
• Switch the ignition to off.
• Switch the ignition to ON.
• Turn on the head light in low position.
• Jump the DLC-2 terminal B to GND using a jumper wire.
• Verify that the optical axis movement.
• Does the optical axis move up and down both side?
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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 THE 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.
Right-side:
Left-side:
• 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 THE MALFUNCTION IS IN HEADLIGHT LEVELING ACTUATOR OR ELSEWHERE
• Replace the suspected side front combination light.
• Does the auto leveling adjust optical axis of the headlight for vehicle posture?
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Yes
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Troubleshooting 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 THE MALFUNCTION IS IN WIRING HARNESS BETWEEN AUTO LEVELING CONTROL MODULE AND HEADLIGHT LEVELING ACTUATOR
• Inspect for open or short circuit in wiring harness.
Right-side:
Left-side:
• 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 REAR AUTO LEVELING SENSOR INSTALLATION
• Inspect the rear auto leveling sensor installation (bent or damaged bracket, or dislocated link).
• Is there any bending, damage or dislocated links at the bracket?
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Yes
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Repair or replace the malfunctioning part, then install the rear auto leveling sensor properly.
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No
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Go to the next step.
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7
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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.7 Speedometer indication is defective” procedure.
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