Circuit Description - DTC P3115 - Information Codes 224, 225, 226, 227, 228, 229: Notes

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When using an OBD II scan tool other than TOYOTA hand-held tester, check all the steps.
When using TOYOTA hand-held tester, confirm the information code and check it.

The HV ECU checks that the system main relay (No. 1, No. 2, No. 3) is normally operating and detects malfunction.