Component Parts Location

No.

Component

Description

1.

Push-button ignition switch¹

Push-button ignition switch (push switch) is pressed (ON), and transmits status signal to BCM and IPDM E/R.

Ignition switch²

Ignition switch is turned to ON, and transmits status signal to BCM and IPDM E/R.

2.

IPDM E/R

• IPDM E/R detects push-button ignition switch¹ or ignition switch² status, and transmits ignition switch status signal (CAN) to BCM.
• IPDM E/R receives ignition relay-1 (IPDM E/R) control signal and ignition switch ON signal (CAN) from BCM, and controls ignition relay-1 (built into IPDM E/R)

3.

BCM

• BCM controls power distribution system.
• BCM judges ignition position and vehicle condition.
• BCM checks ignition position internally.

4.

Ignition relay-2 (in fuse block)

• Ignition relay-2 is controlled by BCM.
• Ignition relay-2 supplies ignition ON power supply or ignition ON signal to each ECU and system when ignition is turned ON.
• BCM compares status of ignition relay-2 control signal and ignition position judged by BCM.
• BCM monitors ignition relay-2 operating status by ignition relay-2 feedback signal.

5.

Front blower motor relay (in fuse block)

• Front blower motor relay is controlled by BCM.
• Front blower motor supplies ignition ON power supply or ignition ON signal to air conditioning system when ignition is turned ON.
• BCM compares status of front blower motor relay control signal and ignition position judged by BCM.

6.

Accessory relay-1 (in fuse block)

• Accessory relay-1 is controlled by BCM.
• Accessory relay-1 supplies accessory power supply or ignition ON signal to each ECU when ignition is turned ON.
• BCM compares status of accessory relay-1 control signal, and ignition position judged by BCM.