No. 2 AUTO LEVELING SYSTEM DOES NOT ADJUST OPTICAL AXIS OF THE HEADLIGHTS FOR VEHICLE POSTURE [HEADLIGHT AUTO LEVELING SYSTEM]
| 2 | Auto leveling does not adjust optical axis of the headlights for vehicle posture |
|---|---|
| POSSIBLE CAUSE | Headlight leveling actuator malfunction Auto leveling control module malfunction Auto leveling sensor malfunction Improper installation of auto leveling sensor Open or short to GND circuit in wiring harness between auto leveling control module terminal R and ABS HU/CM terminal V (with ABS) Open or short to GND circuit in wiring harness between auto leveling control module terminal R and DSC HU/CM terminal T (with DSC) |
AUTO LEVELING DOES NOT ADJUST OPTICAL AXIS - POSSIBLE CAUSE
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | VERIFY AUTO LEVELING WARNING LIGHT ILLUMINATION 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? | 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 Is the malfunction appears both side? | 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 open or short circuit in wiring harness at auto leveling function does not operate. Right-side: Auto leveling control module terminal J-right-side headlight leveling actuator terminal F Auto leveling control module terminal I-right-side headlight leveling actuator terminal H Auto leveling control module terminal I-right-side headlight leveling actuator terminal G Left-side: Auto leveling control module terminal J-left-side headlight leveling actuator terminal F Auto leveling control module terminal I-left-side headlight leveling actuator terminal H Auto leveling control module terminal K-left-side headlight leveling actuator terminal G Is open or short circuit detected? | 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 side head light module. (See HEADLIGHT LEVELING ACTUATOR REMOVAL/INSTALLATION .) Does the auto leveling adjust optical axis of the headlights for vehicle posture? | 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 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. Right-side: Auto leveling control module terminal J-right-side headlight leveling actuator terminal F Auto leveling control module terminal I-right-side headlight leveling actuator terminal H Left-side: Auto leveling control module terminal J-left-side headlight leveling actuator terminal F Auto leveling control module terminal I-left-side headlight leveling actuator terminal H Is open or short circuit detected? | Yes | Repair or replace for open or short circuit. |
| No | Go to the next step. | ||
| 6 | 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? | Yes | Go to the next step. |
| No | Repair or replace malfunctioning part, or install properly. | ||
| 7 | INSPECT FRONT AUTO LEVELING SENSOR Inspect the front auto leveling sensor. (See FRONT AUTO LEVELING SENSOR INSPECTION .) Is the front auto leveling sensor normal? | Yes | Go to the next step. |
| No | Replace the front auto leveling sensor. (See FRONT AUTO LEVELING SENSOR REMOVAL/INSTALLATION .) | ||
| 8 | INSPECT REAR AUTO LEVELING SENSOR Inspect the rear auto leveling sensor. (See REAR AUTO LEVELING SENSOR INSPECTION .) Is the rear auto leveling sensor normal? | Yes | Go to the next step. |
| No | Replace the rear auto leveling sensor. (See REAR AUTO LEVELING SENSOR REMOVAL/INSTALLATION .) | ||
| 9 | 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: Auto leveling control module terminal R-GND ( normal condition: not continuity ) Auto leveling control module terminal R-ABS HU/CM terminal V ( normal condition: continuity ) (with ABS) Auto leveling control module terminal R-DSC HU/CM terminal T ( normal condition: continuity ) (with DSC) Are there continuity normal? | Yes | Replace the auto leveling control module. (See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION .) |
| No | Repair or replace for open or short circuit. | ||
AUTO LEVELING DOES NOT ADJUST OPTICAL AXIS - DIAGNOSTIC PROCEDURE