Hybrid Vehicle Control System

CIRCUIT DESCRIPTION

Detecting Condition:

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

HINT:
- 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.

DTC P3115 - Information code 224, 225, 226, 227, 228, 229

Wiring Diagram:

Steps 1 - 2:

INSPECTION PROCEDURE


CIRCUIT DESCRIPTION

Detecting Condition:

If the system main relay is deposited, it might be impossible to shut down the high voltage system. Therefore, the HV ECU checks the system main relay and stops the system if malfunction is detected.

DTC P3115 - Information code 231, 232, 233

INSPECTION PROCEDURE
If any of these information codes is output, replace the system main relay. If one of the information codes above and any of the information codes 224 - 229 are recorded at the same time, also replace the HV ECU.