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

id09021n017600

Description

Error signal received from instrument cluster

•  AFS OFF switch error signal
•  Ignition switch error signal
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal error
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal not determined
Detection condition
•  AFS OFF switch error signal
―  AFS control module received the AFS OFF switch error signal for 5 s or more with the ignition switched ON (engine off or on).
•  Ignition switch error signal
―  AFS control module received the ignition switch error signal for 5 s or more with the ignition switched ON (engine off or on).
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal error
―  AFS control module received the selector lever R position (ATX)/shift lever reverse (MTX) signal error for 5 s or more with the ignition switched ON (engine off or on).
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal not determined
―  AFS control module detected the undetermined selector lever R position (ATX)/shift lever reverse (MTX) signal.
Fail-safe function
•  AFS OFF switch error signal
―  Control of the swivel actuator is continued with the AFS OFF switch fixed in the condition when the malfunction is detected.
―  Control of the headlight auto leveling system is continued.
•  Ignition switch error signal
―  Control of the AFS is continued with the ignition switched ON (engine on).
―  Control of the headlight auto leveling system is continued.
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal error
―  The swivel actuator is moved to the center.
―  Control of the headlight auto leveling system is continued.
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal not determined
―  Control of the swivel actuator is continued with the transaxle range sensor (ATX/except MZR 1.6)/transaxle range switch (ATX/MZR 1.6)/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
•  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.
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
Go to the next step.
2
PERFORM DTC INSPECTION AND VERIFY INSTRUMENT CLUSTER MALFUNCTION
•  Clear the DTC for the AFS control module using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Retrieve the 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 DTC for the AFS control module using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Retrieve the AFS control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the AFS control module.
Go to the next step.
No
Go to the next step.
4
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS)].)
No
DTC troubleshooting completed.