Auto High-Beam (High-Beam Support System) Symptom Troubleshooting - High beam and low beam does not switch automatically
High beam and low beam does not switch automatically
1.
DTC check:

DTC check
?1.
Clear the DTCs with the HDS.


?2.
Press the engine start/stop button to select the ON mode.

?3.
Wait for at least 6 seconds.

?4.
Check for DTCs with the HDS.


Are any DTCs indicated?

     
YES
     
     
     
Go to the indicated DTCs troubleshooting, then recheck.?
     
NO
     
     
     
Go to step 2.
2.
C-MOS camera check:

C-MOS camera check
?1.
Do the C-MOS camera light source test.

Are all data list values correct?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Faulty auto high-beam control unit; replace the rearview mirror.?
3.
Switch information check:

Switch information check
?1.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Value
Unit
Passing switch input information(CAN)
    
H/L Lo ON switch input information (CAN)
    
H/L Hi ON input information (CAN)
    
Speed input information (CAN)
    
Auto light frame input information (CAN)
    
H/L Auto SW input information (CAN)
    
Hi beam control signal
    
The dirt of the camera lens indicator
    
Bad weather sensed
    
Village sensed Keep
    
Speed limit below threshold
    
Headlights sensed
    
Taillights sensed
    

Is each switch information OK?

     
YES
     
     
     
The system is OK at this time. Check the C-MOS camera. If everything looks OK, explain auto high-beam activation conditions to the customer.?
     
NO