DTC Troubleshooting: B108A, B108B, B108C, B108D, B108E, B108F, B1090, B1091, B1092
DTC B108A: Right Side Parking Light Circuit Shorted
DTC B108B: Left Side Parking Light Circuit Shorted
DTC B108C: Right Side Head Light Low Beam Circuit Shorted
DTC B108D: Left Side Head Light Low Beam Circuit Shorted
DTC B108E: Right Side Head Light High Beam Circuit Shorted
DTC B108F: Left Side Head Light High Beam Circuit Shorted
DTC B1090: Illumination Circuit Shorted
DTC B1091: DRL Circuit Shorted
DTC B1092: Interior Light Cut Circuit Shorted
NOTE:
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
These DTC is stored when the relay control module detects ground fault of the harness and controls the circuit in a cutoff state inside the relay control module.

DTC Description
DTC
B108A Right Side Parking Light Circuit Shorted
  
B108B Left Side Parking Light Circuit Shorted
  
B108C Right Side Head Light Low Beam Circuit Shorted
  
B108D Left Side Head Light Low Beam Circuit Shorted
  
B108E Right Side Head Light High Beam Circuit Shorted
  
B108F Left Side Head Light High Beam Circuit Shorted
  
B1090 Illumination Circuit Shorted
  
B1091 DRL Circuit Shorted
  
B1092 Interior Light Cut Circuit Shorted
  

1.
Problem verification:

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


?2.
Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

?3.
Check for DTCs with the HDS.
DTC Description
DTC
B108A Right Side Parking Light Circuit Shorted
  
B108B Left Side Parking Light Circuit Shorted
  
B108C Right Side Head Light Low Beam Circuit Shorted
  
B108D Left Side Head Light Low Beam Circuit Shorted
  
B108E Right Side Head Light High Beam Circuit Shorted
  
B108F Left Side Head Light High Beam Circuit Shorted
  
B1090 Illumination Circuit Shorted
  
B1091 DRL Circuit Shorted
  
B1092 Interior Light Cut Circuit Shorted
  

Are any DTCs indicated?

     
YES
     
     
     
Refer to the DTC shown on the display, then repair a short to body ground in the wire based on the instructions (see table), or replace the relay control module.?
DTC
Operation for failure wire
B108A
PARKING R
B108B
PARKING L
B108C
R H/L LO
B108D
L H/L LO
B108E
R H/L HI
B108F
L H/L HI
B1090
ILLUMI?
B1091
DRL RLY OUT, DRL RLY OUT2
B1092
INTR LT CUT RLY OUT1, INTR LT CUT RLY OUT2
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?