No.5 AUTO LEVELING DOES NOT ADJUST OPTICAL AXIS OF THE HEADLIGHTS FOR VEHICLE POSTURE [AFS (ADAPTIVE FRONT LIGHTING SYSTEM)]

id0903h9912500

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 (With front auto leveling sensor) •  Rear auto leveling sensor malfunction •  Front auto leveling sensor is not installed properly (With front auto leveling sensor) •  Rear auto leveling sensor is not installed properly

Diagnostic Procedure

With front auto leveling sensor

Step	Inspection		Action
1	INSPECT AFS OFF LIGHT ILLUMINATION •  Switch the ignition to ON. •  Inspect the AFS OFF light indicator light condition. •  Does the headlight AFS OFF light illuminate 3 s after switching the ignition to ON?	Yes	Go to symptom “No.4 AFS OFF 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: ―  AFS control module terminal J—front combination light (RH) terminal (14-pin) I ―  AFS control module terminal I—front combination light (RH) terminal (14-pin) F ―  AFS control module terminal L—front combination light (RH) terminal (14-pin) L LH: ―  AFS control module terminal J—front combination light (LH) terminal (14-pin) I ―  AFS control module terminal K—front combination light (LH) terminal (14-pin) F ―  AFS control module terminal L—front combination light (LH) terminal (14-pin) L •  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. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.) •  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. (See AFS (ADAPTIVE FRONT LIGHTING SYSTEM) CONTROL MODULE REMOVAL/INSTALLATION.)
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: ―  AFS control module terminal J—front combination light (RH) terminal (14-pin) I ―  AFS control module terminal L—front combination light (RH) terminal (14-pin) L LH: ―  AFS control module terminal J—front combination light (LH) terminal (14-pin) I ―  AFS control module terminal L—front combination light (LH) terminal (14-pin) L •  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 AUTO LEVELING SENSOR INSTALLATION •  Inspect the front auto leveling sensor installation (bent or damaged bracket, or dislocated link). •  Is there any bending, damage or dislocated links at the bracket?	Yes	Repair or replace the malfunctioning part, then install the front auto leveling sensor properly. (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
		No	Go to the next step.
7	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?	Yes	Repair or replace the malfunctioning part, then install the rear auto leveling sensor properly. (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
		No	Go to the next step.
8	INSPECT FRONT AUTO LEVELING SENSOR •  Inspect the front auto leveling sensor. (See 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 AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
9	INSPECT REAR AUTO LEVELING SENSOR •  Inspect the rear auto leveling sensor. (See 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 AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
10	VERIFY IF MALFUNCTION IS NO VEHICLE SPEED SIGNAL OR AFS CONTROL MODULE •  Verify that the speedometer indication. •  Does the speedometer indicate properly?	Yes	Replace the AFS control module.
		No	Perform the instrument cluster symptom troubleshooting “No.7 Speedometer indication is defective” procedure. (See NO. 7 SPEEDOMETER INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER].)

Without front auto leveling sensor

Step	Inspection		Action
1	INSPECT AFS OFF LIGHT ILLUMINATION •  Switch the ignition to ON. •  Inspect the AFS OFF light indicator light condition. •  Does the headlight AFS OFF light illuminate 3 s after switching the ignition to ON?	Yes	Go to symptom “No.4 AFS OFF 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: ―  AFS control module terminal J—front combination light (RH) terminal (14-pin) I ―  AFS control module terminal I—front combination light (RH) terminal (14-pin) F ―  AFS control module terminal L—front combination light (RH) terminal (14-pin) L LH: ―  AFS control module terminal J—front combination light (LH) terminal (14-pin) I ―  AFS control module terminal K—front combination light (LH) terminal (14-pin) F ―  AFS control module terminal L—front combination light (LH) terminal (14-pin) L •  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. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.) •  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. (See AFS (ADAPTIVE FRONT LIGHTING SYSTEM) CONTROL MODULE REMOVAL/INSTALLATION.)
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: ―  AFS control module terminal J—front combination light (RH) terminal (14-pin) I ―  AFS control module terminal L—front combination light (RH) terminal (14-pin) L LH: ―  AFS control module terminal J—front combination light (LH) terminal (14-pin) I ―  AFS control module terminal L—front combination light (LH) terminal (14-pin) L •  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 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?	Yes	Repair or replace the malfunctioning part, then install the rear auto leveling sensor properly. (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
		No	Go to the next step.
7	INSPECT REAR AUTO LEVELING SENSOR •  Inspect the rear auto leveling sensor. (See 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 AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
8	VERIFY IF MALFUNCTION IS NO VEHICLE SPEED SIGNAL OR AFS CONTROL MODULE •  Verify that the speedometer indication. •  Does the speedometer indicate properly?	Yes	Replace the AFS control module.
		No	Perform the instrument cluster symptom troubleshooting “No.7 Speedometer indication is defective” procedure. (See NO. 7 SPEEDOMETER INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER].)