id0903d0899200
Vehicle without front auto leveling sensor
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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
• Auto leveling sensor the malfunction (Detects DTC 3)
• Detects auto leveling control module or auto leveling sensor initial setting malfunction (DTC 6)
• Improper installation of auto leveling sensor
• Vehicle speed signal is not input to auto leveling control module
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Diagnostic procedure
| STEP |
INSPECTION |
ACTION |
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|---|---|---|---|
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1
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VERIFY IF MALFUNCTION CAUSED BY INITIAL SETTING FOR AUTO LEVELING SYSTEM NOT PERFORMED
• Perform the auto leveling system initial setting. (See
AUTO LEVELING SYSTEM INITIALIZATION.)
• Verify the malfunction symptom.
• Was the malfunction corrected?
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Yes
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Diagnosis completed (cause is auto leveling system initial setting not performed).
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No
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Go to the next step.
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2
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CONFIRM HEADLIGHT AUTO LEVELING SYSTEM DTC
• Retrieve the headlight auto leveling system DTCs. (See
DTC INSPECTION [HEADLIGHT AUTO LEVELING SYSTEM].)
• 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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3
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INSPECT AUTO LEVELING SENSOR INSTALLATION
• Inspect auto leveling sensor installation (bend or damaged of bracket, or dislocated link).
• Are 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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4
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INSPECT IF THE MALFUNCTION IS IN AUTO LEVELING SENSOR OR ELSEWHERE
• Turn the ignition switch to the LOCK position.
• Turn the ignition switch to the ON position.
• 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 7.
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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 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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6
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INSPECT IF THE MALFUNCTION IS IN HEADLIGHT LEVELING ACTUATOR OR ELSEWHERE
• Replace the suspected side front combination light. (See
FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)
• 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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7
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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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8
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VERIFY IF MALFUNCTION IS NO VEHICLE SPEED SIGNAL
• Verify the following PCM PID "VSS" using the M-MDS. (See
ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) (See
ON-BOARD DIAGNOSTIC TEST [L5].) (See
ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)
• Does the VSS monitored value correspond to the speedometer indication while the vehicle is driven?
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Yes
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Go to the next step.
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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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9
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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:
• Is the 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 an open or short circuit.
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Vehicle with front auto leveling sensor
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2
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Headlight auto leveling does not adjust optical axis of the headlights for vehicle posture
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DESCRIPTION
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• Headlight auto leveling does not adjust optical axis of the headlights for cargo and passenger weight conditions when the vehicle speed above 30km/h {19 mph}
• Left or right side headlight auto leveling does not operate
|
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POSSIBLE CAUSE
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• Headlight leveling actuator the malfunction
• Headlight auto leveling control module the malfunction
• Front and/or rear leveling sensor the malfunction
• Improper installation of front and/or rear auto leveling sensor
• Open or short circuit in wiring between headlight auto leveling control module terminal R and instrument cluster terminal 2O
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Diagnostic procedure
| STEP |
INSPECTION |
ACTION |
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|---|---|---|---|
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1
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VERIFY HEADLIGHT AUTO LEVELING WARNING LIGHT ILLUMINATION
• Turn the ignition switch to the ON position.
• Verify that the headlight auto leveling warning light condition.
• Does the headlight auto leveling warning light illuminate from turning the ignition switch to ON
3 s after?
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Yes
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Perform the symptom “No.1 Headlight auto leveling warning light illuminates when the ignition switch 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 THE MALFUNCTION IS IN AUTO LEVELING SENSOR OR ELSEWHERE
• Is the malfunction appeared 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 THE MALFUNCTION IS IN WIRING HARNESS BETWEEN HEADLIGHT AUTO LEVELING CONTROL MODULE AND HEADLIGHT LEVELING ACTUATOR
• Inspect for open or short circuit in wiring harness at headlight 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 THE MALFUNCTION IS IN HEADLIGHT LEVELING ACTUATOR OR ELSEWHERE
• Replace the suspected side front combination light. (See
FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)
• Does the headlight 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 headlight auto leveling control module.
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5
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INSPECT IF THE MALFUNCTION IS IN WIRING HARNESS BETWEEN HEADLIGHT AUTO LEVELING CONTROL MODULE AND HEADLIGHT LEVELING ACTUATOR
• Inspect for open or short circuit in wiring harness.
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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Repair or replace the malfunctioning part, or install properly.
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No
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Go to the next step.
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7
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INSPECT FRONT AUTO LEVELING SENSOR
• Inspect the front auto leveling sensor. (See
FRONT AUTO LEVELING SENSOR INSPECTION.)
• 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. (See
REAR AUTO LEVELING SENSOR INSPECTION.)
• 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 THE MALFUNCTION IS IN VEHICLE SPEED SIGNAL LINE OR ELSEWHERE
• Turn the ignition switch to the LOCK position.
• Disconnect the headlight auto leveling control module connector.
• Turn the ignition switch to the ON position.
• Measure the voltage between headlight auto leveling control module harness side connector terminal R and GND.
• Is the voltage
B+?
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Yes
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Repair or replace for short to power supply.
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No
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Go to the next step.
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10
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INSPECT IF THE MALFUNCTION IS IN VEHICLE SPEED SIGNAL LINE OR ELSEWHERE
• Turn the ignition switch to the LOCK position.
• Disconnect headlight auto leveling control module and instrument cluster connectors.
• Verify that the continuity for following:
• Are there continuity.
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Yes
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Replace the headlight 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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