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DEF-4 < SYSTEM DESCRIPTION > REAR WINDOW DEFOGGER SYSTEM SYSTEM DESCRIPTION REAR WINDOW DEFOGGER SYSTEM WITH BOSE SYSTEM WITH BOSE SYSTEM : System Diagram INFOID:0000000009722486 WITH BOSE SYSTEM : System Description INFOID:0000000009722487 Operation Description • Turn rear window defogger switch ON when the ignition switch is turned ON. Then multifunction switch (rear window defogger switch) transmits rear window defogger switch signal to AV control unit via AV communica- • BCM turns rear window defogger relay ON and transmits rear window defogger control signal to IPDM E/R via CAN communication when rear window defogger switch signal is received. • Rear window defogger and door mirror defogger (with door mirror defogger) are supplied with power and operate when rear window defogger relay turns ON. • IPDM E/R transmits rear window defogger control signal to AV control unit via CAN communication. via AV communication. then rear window defogger indicator is illuminated. Timer function • BCM turns rear window defogger relay ON for approximately 15 minutes when rear window defogger switch is turned ON. It makes rear window defogger and door mirror defogger (with door mirror defogger) operate. • Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns rear window defogger relay OFF. The same reaction also occurs during timer operation, if the ignition switch INPUT/OUTPUT SIGNAL CHART *: With door mirror defogger JMLIA0005GB Switch Input signal to BCM BCM function Actuator Rear window defogger switch Defogger switch signal Rear window defogger & Door mir- ror defogger * control Rear window defogger Door mirror defogger * Push button ignition switch Ignition signal |