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NACAT ’09: Push Button Start Presentation, Matt Dixon and Omar Trinidad Southern Illinois University Carbondale Name of system, and/or remote: Vehicle Entry/ disarming the alarm: ECU the remote communicates with: Start/Stop Switch Button: ECU(s) that monitor Start/Stop Switch: Security ECU(s): ‘09 Dodge Challenger Keyless Go FOBIK ( Finger Operated Button Integrated Key) Operator presses unlock on FOBIK which is read by WIN, bussed message to door modules to unlock PEM (Passive Entry Module); WIN detects all button presses Stage 1: Detects presence of (removable) button Stage 2: momentary contact detects press Switch directly part of WIN (Wireless Ignition Node) WIN ECU that plays role of Ignition Switch: Remote Failure Strategy: TIPM (Totally Integrated Power Module) Pry button off at 6 o’clock position Insert FOBIK and rotate, WIN reads transponder in FOBIK Icons and Display: EVIC (Electronic Vehicle Information Center) built into instrument cluster, provides ignition mode messages ‘09 Acura TL Keyless Access Remote ‘05 Toyota Avalon Smart Key Remote passively detected by antennas, status bussed by Keyless Access ECU, driver’s MICU disarms, operator grasps capacitive door handles Doors unlock Keyless Access ECU Smart Key passively detected by antennas, status shared over LIN by Smart Key ECU Operator grasps capacitive door handles Doors unlock 2 momentary contact switches: one switches 12 volts, other switches ground 2 momentary contact switches: both pull voltage from PSC ECU low (Power Switch Control) PSC (Power Switch Control) and Smart Key ECU Smart Key ECU and Immobilizer ECU PCU (Power Control Unit), Remote Slot ECU, Keyless Access ECU Drivers MICU (Multiplexed Integrated Control Unit) which contains Immobilizer PCU Insert remote into Remote Slot, antenna communicates with transponder, Remote Slot ECU busses to immobilizer Keyless Access ICON built into cluster, Display readout on top of instrument cluster, Green LED in switch Smart Key ECU PSC Hold Smart Key near Start/Stop switch, antenna communicates with transponder, Start/ Stop switch hardwired to Smart Key ECU Different colored LED’s in switch, Keyless ICON built into cluster Communication Networks: CAN C (High Speed), CAN B (Medium Speed), Diagnostic CAN C used for scan tool communications Accessory Mode: WIN broadcasts mode over CAN, some modules activate from bussed message, TIPM grounds control of ACC relay TIPM grounds control of run and run/start relays. WIN powers F20 circuit to TIPM WIN broadcasts mode over CAN C WIN powers F20 circuit to TIPM PCM grounds control side of starter relay Run Mode: Start Request: Starter Circuit Control: PCM Ignition Feeds: SRS ECU Ignition Feed(s): C1 11: ACC, Run, Start powered from TIPM; C1 12: powered from run/start relay Fuse 41 from run relay Fuse 27 from run/start relay F-CAN (High Speed), B-CAN (Medium Speed), K-Line used for many scan tool functions, private module to module data lines PCU grounds control of accessory relay PSC powers control side of accessory relay PCU activates 3 internal relays to provide 3 output circuits: IG1A, IG1B, IG2 PSC provides power to control sides of IGN 1, IGN 2 and Start Cut-Out relays 12 volt signal from PCU to PCM known as “STS” 12 volt signal from PSC to PCM known as “STSW” PCM powers and P/N switch grounds the control sides of starter relays 1 and 2; switched side of relays wired in series PCM powers “STAR” circuit which feeds switched side of starter cut out relay which feeds circuit through park/neutral switch and control side of starter relay D 9: IG 1 from IG 1 relay B 42: IGN 1 from PCU A 13: ACC from ACC Relay Fuse 11 from IGN 1A, Fuse 5 from IGN 1B LIN, Private module to module data lines, CAN (High Speed) IGN 2 10 amp fuse fed from IGN2 relay