System Description

PDU (POWER DISTRIBUTION UNIT)


System Description

- PDU (Power Distribution Unit) is the unit that executes the power distribution with the control signal from the
Intelligent Key unit, instead of the mechanical power supply mechanism by conventional key cylinder.
- The push-button ignition switch is operable when the Intelligent Key is within the detention area of the interior antenna or is inserted to the key slot.
- The push-button ignition switch operation is input to the Intelligent Key unit as a request signal. Then, the
Intelligent Key unit processes the request signal and orders the PDU to switch into the appropriate power supply position.

NOTE:
The prerequisite for starting the engine varies by the state of brake pedal, A/T selector lever, and vehicle speed.
- PDU distributes power to each power supply circuit according to the request signal received.
- The power supply position can be confirmed by illumination of the indicators in the upper surroundings of the push-button ignition switch.

PUSH-BUTTON IGNITION SWITCH OPERATING PROCEDURE
The power supply position switching operation can be performed by the following operation.

NOTE:
- When an Intelligent Key is within the detection area of inside antenna and when it is inserted to the key slot, it is equivalent to the operations below.
- When starting the engine, the Intelligent Key unit monitors the engine start conditions (brake pedal operating condition, A/T selector lever position, and vehicle speed).
- Unless each start condition is fulfilled, the engine will not response regardless of how many times the push-button ignition switch is pushed. At that time, illumination repeats the position in the order of LOCK to ACC
to ON to LOCK.