DTC P1630-81: Communication Error from VSC to ECM Invalid Serial Data Received [11/2018 - 12/2021]: Procedure

1. Check for electronically controlled brake system DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - 02/2019] , or refer to DTC CHECK / CLEAR [02/2019 - 12/2021]

   Chassis > ABS/VSC/TRAC > Trouble Codes 

   Result

   Result	Proceed to
   Electronically controlled brake system DTCs are not output	A
   Electronically controlled brake system DTCs are output	B

Result: 

B 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 12/2021] 

Result: 

A 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - 02/2019] , or refer to DTC CHECK / CLEAR [02/2019 - 12/2021]

   Powertrain > Radar Cruise1 > Clear DTCs 

2. Make sure that the DTC detection conditions are met.

   HINT: 

   If the detection conditions are not met, the system cannot detect the malfunction.

3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - 02/2019] , or refer to DTC CHECK / CLEAR [02/2019 - 12/2021]

   Powertrain > Radar Cruise1 > Trouble Codes 

   Result

   Result	Proceed to
   DTC P1630-81 is not output	A
   DTC P1630-81 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [11/2018 - 02/2019]  , or refer to  REMOVAL [02/2019 - 10/2019]  , or refer to  REMOVAL [10/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021]