No.5 AUTO LEVELING DOES NOT ADJUST OPTICAL AXIS OF THE HEADLIGHTS FOR VEHICLE POSTURE [AFS (ADAPTABLE FRONT LIGHTING SYSTEM)]
id0903c6912500
|
5
|
Auto leveling does not adjust optical axis of headlights according to vehicle attitude
|
|
DESCRIPTION
|
• Auto leveling does not adjust optical axis of headlights according to cargo and passenger weight conditions
|
|
POSSIBLE CAUSE
|
• Headlight auto leveling actuator malfunction
• AFS control module malfunction
• Front auto leveling sensor malfunction
• Rear auto leveling sensor malfunction
• Front auto leveling sensor is not installed properly
• Rear auto leveling sensor is not installed properly
• Vehicle speed signal related part malfunction
|
Diagnostic Procedure
|
Step |
Inspection |
Action |
|
|---|---|---|---|
|
1
|
INSPECT HEADLIGHT AUTO LEVELING WARNING LIGHT ILLUMINATION
• Switch the ignition to ON.
• Inspect the headlight auto leveling warning indicator light condition.
• Does the headlight auto leveling warning illuminate 3 s after switching the ignition to ON?
|
Yes
|
Go to symptom “No.4 Auto leveling warning light illuminates when the ignition is switched to ON” troubleshooting procedure.
|
|
No
|
Go to the next step.
|
||
|
2
|
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?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 5.
|
||
|
3
|
INSPECT IF MALFUNCTION IS IN WIRING HARNESS BETWEEN HEADLIGHT AUTO LEVELING ACTUATOR AND AFS 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?
|
Yes
|
Repair or replace the malfunctioning part for an open or short circuit.
|
|
No
|
Go to the next step.
|
||
|
4
|
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?
|
Yes
|
Troubleshooting is completed.
(The malfunction is in headlight leveling actuator.)
|
|
No
|
Replace the AFS control module.
|
||
|
5
|
INSPECT IF MALFUNCTION IS IN WIRING HARNESS BETWEEN AFS 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?
|
Yes
|
Repair or replace for an open or short to the ground circuit.
|
|
No
|
Go to the next step.
|
||
|
6
|
INSPECT FRONT AND REAR AUTO LEVELING SENSOR INSTALLATION
• Inspect the front and rear auto leveling sensor installation (bent or damaged bracket, or dislocated link).
• Are the front and rear auto leveling sensors installed properly?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace the malfunctioning part, then install the auto leveling sensor properly.
|
||
|
7
|
INSPECT FRONT AUTO LEVELING SENSOR
• Inspect the front auto leveling sensor.
• Is the front auto leveling sensor normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the front auto leveling sensor.
|
||
|
8
|
INSPECT REAR AUTO LEVELING SENSOR
• Inspect the rear auto leveling sensor.
• Is the rear auto leveling sensor normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the rear auto leveling sensor.
|
||
|
9
|
INSPECT IF MALFUNCTION IS VEHICLE SPEED SIGNAL OR AFS CONTROL MODULE
• Inspect the speedometer using the speedometer tester.
• Does the speedometer indicate vehicle speed properly?
|
Yes
|
Replace the AFS control module.
|
|
No
|
Perform the instrument cluster troubleshooting “No.7 Speedometer indication is defective” procedure.
|
||