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 [11/2018 - 08/2020]: Procedure
WARNING: This page is about a different car, the 2020 Toyota RAV4 and 2019 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC OUTPUT (MOTOR GENERATOR)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
- 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.
- Turn the power switch off.
Result:
A
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 02/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]
Result:
B
GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 08/2020]