DTC U0423:68 [ADAPTIVE LED HEADLIGHTS CONTROL MODULE]

id1502c1002400

System malfunction location

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 Led headlights 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 Led headlights 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 Led headlights control module detected undetermined selector lever position (R position) (ATX)/Reverse (MTX) signal.
Fail-safe
•  When the setting is on using the personalization feature, the headlights HI turn on. (When setting is off using personalization feature, headlight HI illumination on/off depends on control by front body control module (FBCM))
•  Control of the headlight auto leveling system is continued.
Possible cause
•  DTCs are stored in the instrument cluster.
•  Instrument cluster malfunction
•  Adaptive Led headlights control module malfunction
System wiring diagram
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Diagnostic Procedure

Step

Inspection

Action
1
VERIFY INSTRUMENT CLUSTER DTCs
•  Perform the DTC inspection for the instrument cluster 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
PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS INSTRUMENT CLUSTER
•  Clear the adaptive Led headlights control module DTCs using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Perform the DTC inspection for the adaptive Led headlights control module using the M-MDS.
•  Is the DTC U0423:68 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 Led headlights control module DTCs using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Perform the DTC inspection for the adaptive Led headlights control module using the M-MDS.
•  Is the DTC U0423:68 displayed?
Yes
Replace the adaptive Led headlights control module, then go to the next step.
(See ADAPTIVE LED HEADLIGHTS 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 LED HEADLIGHTS CONTROL MODULE].)
No
DTC troubleshooting completed.