This is the power source circuit of the certification ECU.

The certification ECU controls the following:

If the certification ECU detects that the luggage compartment open switch is pressed when the driver is carrying the electrical key or when the electrical key is locked in the luggage compartment door, the certification ECU sends a luggage compartment door open motor drive request signal to the main body ECU LH.

The certification ECU activates the front and rear cabin oscillators. The power is supplied from the certification ECU to both the front and rear cabin oscillators. The front and rear cabin oscillator circuits have the same wiring. If the smart access system with push-button start does not operate properly inside the vehicle, check the circuit for their oscillators.

The certification ECU activates the inner and outer luggage compartment oscillators. The power is supplied from the certification ECU to both the inner and outer luggage compartment oscillators. The inner and outer luggage compartment oscillator circuits have the same wiring. If the entry luggage compartment function has a malfunction, check the circuit for a malfunctioning oscillator.

Terminals ANT1 and ANT2 of the antenna (door outside handle) detect if the electrical key is within the action area around the door outside handle.

This circuit receives the signal indicating whether or not a touch sensor signal is detected.

The entry lock switches (trigger switch) are built into the outside handles of the LH/RH door. The certification ECU detects the conditions of the each lock switch.

Door oscillators are built into each door. Each of them forms its own action area around its door and detects the presence of the electrical key.

Check the entry unlock function.

Disconnect the P33 ECU connector.