DTC U0423:68 [ADAPTIVE LED HEADLIGHTS CONTROL MODULE]

id1502c1002400

Description

Error signal received from instrument cluster

•  Ignition switch error signal
•  Selector lever position (R position) signal error
•  Selector lever position (R position) 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) signal error
?  The adaptive LED headlights control module received selector lever position (R position) signal error for 5 s or more with the ignition switched ON (engine off or on).
•  Selector lever position (R position) signal not determined
?  The adaptive LED headlights control module detected undetermined selector lever position (R position) signal for 5 s or more with the ignition switched ON (engine off or on).
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
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 LED headlights 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 LED headlights 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 LED headlights 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 LED headlights control module DTCs using the M-MDS.
•  Is the same DTC 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.