No.2 AFS (ADAPTIVE FRONT LIGHTING SYSTEM) DOES NOT OPERATE IN THE LEFT AND RIGHT DIRECTIONS [AFS (ADAPTIVE FRONT LIGHTING SYSTEM)]

id0903h9913300

2
AFS (adaptive front lighting system) does not operate in the left and right directions
DESCRIPTION
The AFS OFF light is not illuminated while the vehicle speed is 2 km/h or more and the AFS does not operated in the left or right direction when the shift position is in the D or M range (ATX) or in a position other than R (MTX).
POSSIBLE CAUSE
•  The necessary signal for controlling the AFS control module is not input.
―  Steering angle signal error
•  Steering angle sensor malfunction
•  Communication error between BCM and AFS control modules
―  Engine speed signal, vehicle speed signal error
•  Communication error between PCM and AFS control modules
―  Transaxle range signal error
•  Communication error between TCM and BCM
•  Communication error between BCM and AFS control modules
―  Manual transmission backlight switch signal error
•  Backlight switch malfunction (stuck on)
―  Headlight left/right position signal error
•  Hall sensor (swivel actuator) malfunction
•  Vehicle steering conditions are not correctly input to AFS control module
―  Steering angle sensor malfunction
―  Wheel alignment adjustment malfunction (right run/left run)
•  Swivel actuator which receives control signal from AFS control module does not operate
―  Swivel actuator malfunction
―  Malfunction in wiring harness between AFS control module and front combination light
•  AFS OFF light malfunction
―  Instrument cluster (AFS OFF light) malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT DTCs FOR MODULES COMPRISING SYSTEM
•  Verify DTCs for the following modules using the M-MDS.
―  BCM
―  PCM
―  TCM
―  AFS
•  Can DTCs be verified?
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
2
INSPECT IF MALFUNCTION IS SWIVEL ACTUATOR
•  Do both the left and right headlights not move?
Yes
Go to the next step.
No
Go to Step 8.
3
INSPECT IF MALFUNCTION IS AFS OFF LIGHT
•  Start the engine.
•  Turn on the headlights.
•  Verify that the AFS OFF light illuminates by operating the AFS OFF switch ON/OFF.
•  Does the AFS OFF switch illuminate/turn off according to the switch operation?
Yes
Go to Step 6.
No
Go to the next step.
4
INSPECT AFS OFF SWITCH SIGNAL WIRING HARNESS
•  Disconnect the AFS control module connector.
•  Verify the continuity between AFS OFF switch terminal H (L.H.D.)/B (R.H.D.) and body ground.
•  Is there continuity?
Yes
Repair for a short circuit to the wiring harness ground between AFS OFF switch terminal H (L.H.D.)/B (R.H.D.) and AFS control module terminal P.
No
Go to the next step.
5
INSPECT AFS OFF SWITCH
•  Inspect the AFS OFF switch.
•  Is the AFS OFF switch normal?
Yes
Turn off the AFS OFF light using the instrument cluster active command modes WL + IL and the M-MDS.
(See ACTIVE COMMAND MODES TABLE [INSTRUMENT CLUSTER].)
No
Replace the AFS OFF switch.
(See AFS (ADAPTIVE FRONT LIGHTING SYSTEM) OFF SWITCH REMOVAL/INSTALLATION.)
6
STEERING ANGLE SENSOR INSPECTION
•  Inspect the steering angle sensor.
•  Is the steering angle sensor normal?
Yes
Go to the next step.
No
Replace the steering angle sensor.
(See STEERING ANGLE SENSOR REMOVAL/INSTALLATION.)
7
VERIFY THAT VEHICLE TRAVELS STRAIGHT
•  Drive the vehicle on a flat, straight road.
•  Is there frequent steering correction (right run/left run) while on course?
Yes
Inspect the wheel alignment and perform adjustments.
(See FRONT WHEEL ALIGNMENT.)
(See REAR WHEEL ALIGNMENT.)
No
Inspect the following AFS control module PIDs.
If not within the specification, inspect related parts and wiring harnesses.
•  Engine speed (RPM)
•  Vehicle speed (VSPD)
•  Reverse gear switch (R_GEAR_SW)
•  Transaxle position (TR)
8
INSPECT WIRING HARNESS BETWEEN SWIVEL ACTUATOR AND AFS CONTROL MODULE
•  Inspect the following wiring harnesses and connectors:
Swivel actuator (RH)
―  Terminal F to AFS control module terminal I
―  Terminal I to AFS control module terminal J
―  Terminal J to AFS control module terminal X
―  Terminal K to AFS control module terminal R
―  Terminal L to AFS control module terminal L
Swivel actuator (LH)
―  Terminal F to AFS control module terminal K
―  Terminal I to AFS control module terminal J
―  Terminal J to AFS control module terminal U
―  Terminal K to AFS control module terminal T
―  Terminal L to AFS control module terminal L
•  Is there an open or short circuit, or poor contact?
Yes
Repair or replace the malfunctioning part.
No
Replace the AFS control module.
(See AFS (ADAPTIVE FRONT LIGHTING SYSTEM) CONTROL MODULE REMOVAL/INSTALLATION.)
9
INSPECT IF MALFUNCTION OCCURS IN SWIVEL ACTUATOR OR AFS CONTROL MODULE
•  Replace the AFS control module.
•  Is the AFS operation normal?
Yes
Troubleshooting completed.
No
Replace the front combination light.
(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)