No.4 AFS OFF LIGHT FLASHES WHEN THE IGNITION IS SWITCHED TO ON [AFS (ADAPTIVE FRONT LIGHTING SYSTEM)]
id0903h9914400
|
4
|
AFS OFF light flashes when the ignition is switched to ON
|
|
DESCRIPTION
|
• The AFS OFF light flashes when the ignition is switched ON.
|
|
POSSIBLE CAUSE
|
• Headlight auto leveling function related electrical part malfunction
• AFS OFF light illumination circuit malfunction
|
Diagnostic Procedure
|
Step |
Inspection |
Action |
|
|---|---|---|---|
|
1
|
INSPECT FRONT AND REAR AUTO LEVELING SENSOR INSTALLATION
• Inspect the front and rear auto leveling sensor installation.
• Is there any bending, damage or dislocated links at the bracket?
|
Yes
|
Repair or replace the malfunctioning part.
|
|
No
|
Go to the next step.
|
||
|
2
|
INSPECT AFS CONTROL MODULE POWER SUPPLY VOLTAGE
• Switch the ignition to ON.
• Measure the voltage between AFS control module terminals H and ground.
• Is the voltage B+?
|
Yes
|
Go to the next step.
|
|
No
|
Inspect and repair or replace the malfunctioning part for an open circuit between the ignition switch (push start) and AFS control module terminals H.
|
||
|
3
|
INSPECT AFS CONTROL MODULE GROUND CIRCUIT FOR OPEN CIRCUIT
• Switch the ignition to off.
• Disconnect the AFS control module connector.
• Verify the continuity between the AFS control module wiring harness-side connector terminal F and ground.
• Is there continuity?
|
Yes
|
Connect the AFS control module connector, then go to the next step.
|
|
No
|
Inspect and repair for a loose or poor connection in the AFS control module ground point.
|
||
|
4
|
INSPECT IF MALFUNCTION IS IN FRONT AUTO LEVELING SENSOR OR ELSEWHERE
• Switch the ignition to ON.
• Turn the headlights on.
• Measure the voltage between AFS control module terminal G and ground.
• Is the voltage 0.5—4.5V?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 8.
|
||
|
5
|
INSPECT IF MALFUNCTION IS IN REAR AUTO LEVELING SENSOR OR ELSEWHERE
• Turn the headlights on.
• Measure the voltage between AFS control module terminal E and ground.
• Is the voltage 0.5—4.5V?
|
Yes
|
Go to Step 10.
|
|
No
|
Go to the next step.
|
||
|
6
|
INSPECT REAR AUTO LEVELING SENSOR SIGNAL RELATED CIRCUIT
• Inspect for an open or short circuit in the wiring harness between AFS control module terminal E and rear auto leveling sensor terminal B.
• 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.
|
||
|
7
|
INSPECT REAR AUTO LEVELING SENSOR
• Inspect the rear auto leveling sensor.
• Is the rear auto leveling sensor normal?
|
Yes
|
Repair or replace the malfunctioning part for an open circuit in the following:
• Between AFS control module terminal M and rear leveling sensor terminal C
• Between AFS control module terminal D and rear auto leveling sensor terminal A
|
|
No
|
Replace the rear auto leveling sensor.
|
||
|
8
|
INSPECT IF MALFUNCTION IS IN FRONT AUTO LEVELING SENSOR POWER OR GROUND CIRCUIT OR ELSEWHERE
• Switch the ignition to off.
• Disconnect the front and rear auto leveling sensor connectors.
• Switch the ignition to ON.
• Turn the headlights on.
• Measure the voltage between front auto leveling sensor terminals A and C at the wiring harness-side connector.
• Is the voltage 4.75—5.25V?
|
Yes
|
Go to the next step.
|
|
No
|
Inspect for an open or short circuit in the following:
• Between AFS control module terminal M and front auto leveling sensor terminal C
• Between AFS control module terminal M and rear auto leveling sensor terminal C
• Between AFS control module terminal D and front auto leveling sensor terminal A
• Between AFS control module terminal D and rear auto leveling sensor terminal A
Repair or replace the malfunctioning part for an open or short circuit.
|
||
|
9
|
INSPECT FRONT AUTO LEVELING SENSOR SIGNAL CIRCUIT FOR OPEN OR SHORT CIRCUIT
• Inspect for an open or short circuit in the wiring harness between AFS control module terminal G and front auto leveling sensor terminal B.
• Is an open or short circuit detected?
|
Yes
|
Repair or replace malfunctioning part for an open or short circuit.
|
|
No
|
Inspect the front auto leveling sensor.
If it is malfunctioning, replace the front auto leveling sensor.
|
||
|
10
|
INSPECT IF MALFUNCTION IS IN COMMUNICATION BETWEEN AFS CONTROL MODULE AND INSTRUMENT CLUSTER OR ELSEWHERE
• Retrieve the DTCs for the AFS control module and the instrument cluster using the M-MDS.
• Are the following DTCs displayed?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
Go to the next step.
|
||
|
11
|
INSPECT IF MALFUNCTION IS IN INSTRUMENT CLUSTER OR AFS CONTROL MODULE
• Inspect the instrument cluster.
• Is the instrument cluster normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the instrument cluster.
|
||
|
12
|
INSPECT WIRING HARNESS BETWEEN SWIVEL ACTUATOR AND AFS CONTROL MODULE
• Inspect the following wiring harnesses and connectors:
Swivel actuator (RH)
Swivel actuator (LH)
• Is there an open or short circuit, or poor contact?
|
Yes
|
Repair or replace the malfunctioning part.
|
|
No
|
Go to the next step.
|
||
|
13
|
INSPECT IF MALFUNCTION IS IN SWIVEL ACTUATOR OR AFS CONTROL MODULE
• Replace the front combination lights on the left and right separately with a front combination light in which the actuator operates normally.
• Does the AFS OFF light flash after replacing the front combination light on the left or right side?
|
Yes
|
Replace the AFS control module.
|
|
No
|
Replace the suspected side front combination light.
|
||