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REAR WINDOW DEFOGGER SYSTEM DEF-5 < SYSTEM DESCRIPTION > C D E F G H I J K M A B DEF N O P SYSTEM DESCRIPTION REAR WINDOW DEFOGGER SYSTEM System Diagram INFOID:0000000006164627 System Description INFOID:0000000006164628 Operation Description • When rear window defogger switch is turned ON while ignition switch is ON, the front air control (rear win- dow defogger switch) transmits rear window defogger switch signal to BCM. • BCM transmits rear window defogger control signal to IPDM E/R and display unit via CAN communication when rear window defogger operates. • IPDM E/R turns rear window defogger relay and heated mirror relay ON when rear window defogger switch signal is received. • Rear window defogger and door mirror defogger are supplied with power and operate when rear window defogger relay and heated mirror relay turn ON. • Rear window defogger ON is displayed when signal is received. Timer function • BCM turns rear window defogger relay and heated mirror relay ON for approximately 15 minutes when rear window defogger switch is turned ON while ignition switch is ON. It makes rear window defogger and door mirror defogger operate. • Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns rear window defogger relay and heated mirror relay OFF. The same reaction also occurs during timer opera- tion, if the ignition switch is turned OFF. INPUT/OUTPUT SIGNAL CHART ABLIA2841GB Switch Input signal to BCM BCM function Actuator Rear window defogger switch Defogger switch signal Rear window defogger and door mirror defogger control (if equipped) Rear window defogger Door mirror defogger (if equipped) Ignition switch Ignition signal |