Check the DLC3
Check the DLC3.The HV control ECU conforms to ISO 14230 for communication.
The terminal arrangement of the DLC3 complies with SAEJ1962 and matches the ISO 14230 format.
HINT: If your display shows UNABLE TO CONNECT TO VEHICLE when you have connected the cable of the TOYOTA hand-held tester to the DLC3, turned the motor switch ON and operated the tester, there is a problem in the vehicle or tool.
- If communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still not possible when the tool is connected to another vehicle, the problem is probably in the tool itself, so consult the Service Department.