DTC U0594-81: Invalid Data Received from Hybrid Powertrain Control Module Invalid Serial Data Received [07/2020 - ]: Procedure

1. Clear the DTCs.

   Powertrain > Radar Cruise2 > 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.

   Powertrain > Radar Cruise2 > Trouble Codes 

   Result

   Result	Proceed to
   DTC U0594-81 is not output	A
   DTC U0594-81 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - 06/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2021 - ] 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [07/2020 - ]