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Terminals Of Ecu

  1. OCCUPANT CLASSIFICATION ECU 
    Fig 1: Identifying Occupant Classification ECU Connector Terminals
    G05236510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    OCCUPANT CLASSIFICATION ECU

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specification
    GND (O4-3) R-B - BR Power source (ECU-B Fuse) Always 10 to 14 V
    DIA (O4-2) - GND (O4-3) L-R - BR Diagnosis (DLC3) IG switch ON Pulse generation
    GND (O4-3) - Body ground BR - Body ground Ground Always Below 1 Ω
    FSR - (O4-4) - GND (O4-3) L-W - BR Center airbag sensor assembly communication line (-) Always Below 1 Ω
    BGND (O4-5) - GND (O4-3) B-R - BR Passenger side buckle switch ground line Always Below 1 Ω
    IG (O4-7) - GND (O4-3) B-W - BR Power source (IG2 Fuse) IG switch ON 10 to 14 V
    FSR+ (O4-8) - FSR- (O4-4) L - L-W Center airbag sensor assembly communication line IG switch ON Pulse generation
    BSW (O4-9) - BGND (O4-5) B - B-R Passenger side buckle switch line Buckle switch ON
    Buckle switch OFF    		 Pulse generation
    SGD1 (O5-1) - GND (O4-3) G - BR Occupant classification sensor front LH ground line Always Below 1 Ω
    SGD2 (O5-2) - GND (O4-3) O - BR Occupant classification sensor front RH ground line Always Below 1 Ω
    SGD3 (O5-3) - GND (O4-3) W - BR Occupant classification sensor rear LH ground line Always Below 1 Ω
    GD4 (O5-4) - GND (O4-3) BR - BR Occupant classification sensor rear RH ground line Always Below 1 Ω
    SVC3 (O5-5) - SGD3 (O5-3) GR - W Occupant classification sensor rear LH power supply line IG switch ON, a load is applied to occupant classification sensor rear LH 4.5 to 5.1 V
    SVC4 (O5-6) - SGD4 (O5-4) V - BR Occupant classification sensor rear RH power supply line IG switch ON, a load is applied to occupant classification sensor rear RH 4.5 to 5.1 V
    SIG1 (O5-7) - SGD1 (O5-1) SB - G Occupant classification sensor front LH signal line IG switch ON, a load is applied to occupant classification sensor front LH 0.2 to 4.7 V
    SIG2 (O5-8) - SGD2 (O5-2) L - O Occupant classification sensor front RH signal line IG switch ON, a load is applied to occupant classification sensor front RH 0.2 to 4.7 V
    SIG3 (O5-9) - SGD3 (O5-3) Y - W Occupant classification sensor rear LH signal line IG switch ON, a load is applied to occupant classification sensor rear LH 0.2 to 4.7 V
    SIG4 (O5-10) - SGD4 (O5-4) B - BR Occupant classification sensor rear RH signal line IG switch ON, a load is applied to occupant classification sensor rear RH 0.2 to 4.7 V
    SVC1 (O5-11) - SGD1 (O5 - 1) R-G Occupant classification sensor front LH power supply line IG switch ON, a load is applied to occupant classification sensor front LH 4.5 to 5.1 V
    SVC2 (O5-12) - SGD2 (O5-2) W - O Occupant classification sensor front RH power supply line IG switch ON, a load is applied to occupant classification sensor front RH 4.5 to 5.1 V
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