DTC Troubleshooting: B18A1, B1E51
DTC B18A1: Left Side BSI Radar Unit Internal Circuit Error
DTC B1E51: Right Side BSI Radar Unit Internal Circuit Error
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
DTC
B18A1 Left side BSI radar unit internal circuit error
  
B1E51 Right side BSI radar unit internal circuit error
  

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode.

?4.
Turn the vehicle to the ON mode, then wait for at least 5 seconds.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
B18A1 Left side BSI radar unit internal circuit error
  
B1E51 Right side BSI radar unit internal circuit error
  

Are any DTCs indicated?

     
YES
     
     
     
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.?