DTC Troubleshooting: B1085
DTC B1085: Head Light Low Beam Power Source Abnormality
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

DTC Description
DTC
B1085 Head Light Low Beam Power Source Abnormality
  

1.
Problem verification:

Problem verification
?1.
Clear the DTCs with the HDS.


?2.
Turn the combination light switch to the ON position.

?3.
Wait for at least 6 seconds.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
B1085 Head Light Low Beam Power Source Abnormality
  

Is DTC B1085 indicated?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time.?
2.
Headlight operation check:

Headlight operation check
?1.
Turn the combination light switch ON position then check the status of the headlights.

Does one side of headlight go off?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Go to step 4.
3.
Headlight check:

Headlight check
?1.
Swap the left headlight and the right headlight.

Are the symptoms swapped left and right?

     
YES
     
     
     
     
NO
     
     
     
4.
Shorted wire check (H/L LO SIG line):

Shorted wire check (H/L LO SIG line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connectors.
Relay control module connector B (10P)
Left headlight 8P connector
Right headlight 8P connector

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Relay control module connector B (10P): disconnected
Left headlight 8P connector: disconnected
Right headlight 8P connector: disconnected
Test point 1
Relay control module connector B (10P) No. 9
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to ground in the wire.?
     
NO