Hybrid Vehicle Control System
DTC P3115 SYSTEM MAIN RELAY MALFUNCTIONCIRCUIT DESCRIPTION
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.
Detecting Condition:
DTC P3110 - Information code 224, 225, 226, 227, 228, 229
Wiring Diagram:
Step 1 - 2:
INSPECTION PROCEDURE
CIRCUIT DESCRIPTION
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 it malfunction is detected.
Detecting Condition:
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.