DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0293-87: Lost Communication With Hybrid Powertrain Control Module Missing Message; DTC U1170-87: Lost Communication With Brake System Control Module (ch2) Missing Message [10/2017 - 10/2020]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
4. Check for DTCs.

   Powertrain > Motor Generator > Trouble Codes 

   Result

   Result	Proceed to
   None of the following DTCs are output.	A
   Any of the following DTCs are also output.	B

   Relevant DTC
   P3124-87	Lost Communication between Drive Motor "A" and HV ECU Missing Message

   HINT: 

   U0100-87, U0293-87 or U1170-87 may be stored due to a malfunction which also causes the DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.

5. Turn the power switch off.

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020] 

Result: 

B 

GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - 10/2020]