System Description

SYSTEM

System Description


System Description

- Multifunction switch (rear window defogger switch) transmits rear window defogger switch signal to AV control unit via AV communication when rear window defogger switch is turned ON, while ignition switch is ON.
- AV control unit transmits rear window defogger switch signal to BCM via CAN communication.
- BCM transmits rear window defogger control signal to IPDM E/R for approximately 15 minutes via CAN communication when rear window defogger switch signal is received.
- IPDM E/R turns rear window defogger relay ON when rear window defogger control signal is received.
- Power is supplied to rear window defogger and door mirror defoggers when rear window defogger relay is
ON.
- Wiper deicer relay* turns ON when rear window defogger relay is ON.

- Power is supplied to wiper deicer*when wiper deicer relay* is ON.
- IPDM E/R transmits rear window defogger control signal to AV control unit via CAN communication.
- AV control unit transmits rear window defogger feedback signal to multifunction switch (rear window defogger switch) via AV communication.
- AV control unit displays rear window defogger ON to the display when detecting the operation of rear window defogger.

Timer function

- BCM transmits rear window defogger control signal to IPDM E/R for approximately 15 minutes when rear window defogger switch is turned ON while ignition switch is ON. Then, IPDM E/R activates rear window defogger, door mirror defoggers and wiper deicer relay*.
- Timer is canceled when rear window defogger switch is pressed again during timer operation. BCM stops the output of rear window defogger control signal. The same operation also occurs when the ignition switch is turned OFF during timer operation.
*: For models with wiper deicer