DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [08/2021 - ]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   For HV Model	A
   For Gasoline Model	B

Result: 

B 

See step  3

Result: 

A 

See step  2

1. Check the DTCs.

   Chassis > ABS/VSC/TRAC > Trouble Codes 

   OK

   Electronically controlled brake system DTCs are not output.

   HINT: 

   If U0418-81 is output in the pre-collision system, electronically controlled brake system DTCs may also have been output. Check the electronically controlled brake system first.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [08/2021 - ] 

Result: 

NG 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

1. Check the DTCs.

   Chassis > Brake/EPB > Trouble Codes 

   OK

   Electronically controlled brake system DTCs are not output.

   HINT: 

   If U0418-81 is output in the pre-collision system, electronically controlled brake system DTCs may also have been output. Check the electronically controlled brake system first.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [08/2021 - ] 

Result: 

NG 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]