DTC C1AB8: Destination Information Undefined [06/2018 - ]: Procedure

1. Check for CAN communication system DTCs.

   Refer to DIAGNOSIS SYSTEM [06/2018 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 08/2020] , or refer to DIAGNOSIS SYSTEM [08/2020 - 08/2021] , or refer to DIAGNOSIS SYSTEM [08/2021 - 09/2022] , or refer to DIAGNOSIS SYSTEM [09/2022 - ]

   OK

   CAN communication system DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

Result: 

OK 

See step  2

1. Replace the main body ECU (multiplex network body ECU) with a new or known good one.

   Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Recheck for DTCs and check if the same DTC is output again.

   Body Electrical > Blind Spot Monitor Master > Trouble Codes 

   Body Electrical > Blind Spot Monitor Slave > Trouble Codes 

   Result

   Result	Proceed to
   No DTCs are output	A
   DTC C1AB8 is output ("Blind Spot Monitor Master")	B
   DTC C1AB8 is output ("Blind Spot Monitor Slave")	C

Result: 

A 

END 

Result: 

B 

REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

Result: 

C 

REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ]