DTC U0423:68 [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE]

id1502b6026800

Description

Error signal received from instrument cluster

•  Ignition switch error signal
•  Selector lever position (R position) (ATX)/reverse (MTX) signal error
•  Selector lever position (R position) (ATX)/reverse (MTX) signal not determined
Detection condition
•  Ignition switch error signal
―  The adaptive front lighting system (AFS) control module received ignition switch error signal for 5 s or more with the ignition switched ON (engine off or on).
•  Selector lever position (R position) (ATX)/reverse (MTX) signal error
―  The adaptive front lighting system (AFS) control module received selector lever position (R position) (ATX)/reverse (MTX) signal error for 5 s or more with the ignition switched ON (engine off or on).
•  Selector lever position (R position) (ATX)/reverse (MTX) signal not determined
―  The adaptive front lighting system (AFS) control module detected undetermined selector lever position (R position) (ATX)/reverse (MTX) signal for 5 s or more.
Fail-safe
•  Ignition switch error signal
―  Control of the adaptive front lighting system (AFS) is continued with the ignition switched ON (engine on).
―  Control of the headlight auto leveling system is continued.
•  Selector lever position (R position) (ATX)/reverse (MTX) signal error
―  The swivel actuator is moved to the center.
―  Control of the headlight auto leveling system is continued.
•  Selector lever position (R position) (ATX)/reverse (MTX) signal not determined
―  Control of the swivel actuator is continued with the transmission range switch (ATX)/back-up light switch (MTX) fixed in the condition when the malfunction is determined.
―  Control of the headlight auto leveling system is continued.
Possible cause
•  DTCs are stored in the instrument cluster.
•  Instrument cluster malfunction
•  Adaptive front lighting system (AFS) control module malfunction
System wiring diagram
Not applicable

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY INSTRUMENT CLUSTER DTCs
•  Retrieve the instrument cluster DTCs using the M-MDS.
•  Is the DTC displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
Go to the next step.
2
VERIFY IF MALFUNCTIONING LOCATION IS INSTRUMENT CLUSTER DEPENDING ON REPEATABILITY
•  Clear the adaptive front lighting system (AFS) control module DTCs using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Retrieve the adaptive front lighting system (AFS) control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No
Go to Step 4.
3
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear the adaptive front lighting system (AFS) control module DTCs using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Retrieve the adaptive front lighting system (AFS) control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Replace the adaptive front lighting system (AFS) control module, then go to the next step.
(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to the next step.
4
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)
No
DTC troubleshooting completed.