DTC P1631-81: Communication Error from ECM to VSC Invalid Serial Data Received [08/2020 - ]: Procedure
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- CHECK FOR DTCs
- Check for electronically controlled brake system DTCs.
Chassis > Brake/EPB > 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 [06/2018 - ]
Result:
A
See step 2
- Check for electronically controlled brake system DTCs.
- CHECK FOR DTCs
- Clear the DTCs.
Powertrain > Radar Cruise1 > Clear DTCs
- Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
- Check for DTCs.
Powertrain > Radar Cruise1 > Trouble Codes
Result
Result Proceed to DTC P1631-81 is not output A DTC P1631-81 is output B
Result:
A
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]
Result:
B
REPLACE ECM
For 2GR-FKS: Refer to COMPONENTS [06/2018 - ]
For A25A-FKS: Refer to COMPONENTS [08/2020 - 08/2021] , or refer to COMPONENTS [08/2021 - ]
- Clear the DTCs.