(1) Measure the PHEV-ECU connector side by backprobing.
(2) Measure the voltage of the following.
- Voltage between the PHEV-ECU connector (WKUP terminal) and body ground
OK <4 seconds after the power supply mode of the electric motor switch is changed to ON (READY indicator: ON)>: 1 V or lessOK <Other than above>: Battery voltage
Is the check result normal?