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Terminals Of Ecu

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  1. OCCUPANT CLASSIFICATION ECU (for Power seat) 
    Fig 1: Identifying Occupant Classification ECU Terminals (For Power Seat)
    G05013103Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU CONNECTOR TERMINALS REFERENCE TABLE

    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specification
    T10-1 (+B) - T10-3 (GND) W-W-B Battery Always 10 to 14 V
    T10-2 (DIA) - T10-3 (GND) GR - W-B Diagnosis (DLC3) Power switch on (IG) Pulse generation
    T10-3 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
    T10-4 (FSR-) - T10-3 (GND) Y-W-B Center airbag sensor assembly communication line (-) Always Below 1 V
    T10-5 (BGND) - T10-3 (GND) GR - W-B Passenger side buckle switch ground line Always Below 1 V
    T10-7 (IG) - T10-3 (GND) BR - W-B Power source (ECU-B Fuse) Power switch on (IG) 10 to 14 V
    T10-8 (FSR+) - T10-4 (FSR-) L-Y Center airbag sensor assembly communication line Power switch on (IG) Pulse generation
    T10-9 (BSW) - T10-5 (BGND) B-GR Passenger side buckle switch line Always Below 1 V
    T11-1 (SGD1) - T10-3 (GND) G-W-B Front occupant classification sensor LH ground line Always Below 1 V
    T11-2 (SGD2) - T10-3 (GND) O-W-B Front occupant classification sensor RH ground line Always Below 1 V
    T11-3 (SGD3) - T10-3 (GND) W-W-B Rear occupant classification sensor LH ground line Always Below 1 V
    T11-4 (SGD4) - T10-3 (GND) BR - W-B Rear occupant classification sensor RH ground line Always Below 1 V
    T11-5 (SVC3) - T11-3 (SGD3) GR-W Rear occupant classification sensor LH power supply line Power switch on (IG), a load is applied to rear occupant classification sensor LH 4.5 to 5.1 V
    T11-6 (SVC4) - T11-4 (SGD4) V-BR Rear occupant classification sensor RH power supply line Power switch on (IG), a load is applied to rear occupant classification sensor RH 4.5 to 5.1 V
    T11-7 (SIG1) - T11-1 (SGD1) P-G Front occupant classification sensor LH signal line Power switch on (IG), a load is applied to front occupant classification sensor LH 0.2 to 4.9 V
    T11-8 (SIG2) - T11-2 (SGD2) L-O Front occupant classification sensor RH signal line Power switch on (IG), a load is applied to front occupant classification sensor RH 0.2 to 4.9 V
    T11-9 (SIG3) - T11-3 (SGD3) Y-W Rear occupant classification sensor LH signal line Power switch on (IG), a load is applied to rear occupant classification sensor LH 0.2 to 4.9 V
    T11-10 (SIG4) - T11-4 (SGD4) B-BR Rear occupant classification sensor RH signal line Power switch on (IG), a load is applied to rear occupant classification sensor RH 0.2 to 4.9 V
    T11-11 (SVC1) - T11-1 (SGD1) R-G Front occupant classification sensor LH power supply line Power switch on (IG), a load is applied to front occupant classification sensor LH 4.5 to 5.1 V
    T11-12 (SVC2) - T11-2 (SGD2) W-O Front occupant classification sensor RH power supply line Power switch on (IG), a load is applied to front occupant classification sensor RH 4.5 to 5.1 V
  2. OCCUPANT CLASSIFICATION ECU (for Manual seat) 
    Fig 2: Identifying Occupant Classification ECU Terminals (For Manual Seat)
    G05013104Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU CONNECTOR TERMINALS REFERENCE TABLE

    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specification
    O4-1 (+B) - O4-3 (GND) LG - W-B Battery Always 10 to 14 V
    O4-2 (DIA) - O4-3 (GND) O-W-B Diagnosis (DLC3) Power switch on (IG) Pulse generation
    O4-3 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
    O4-4 (FSR-) - O4-3 (GND) B-W Center airbag sensor assembly communication line (-) Always Below 1 V
    O4-5 (BGND) - O4-3 (GND) GR - W-B Passenger side buckle switch ground line Always Below 1 V
    O4-7 (IG) -O4-3 (GND) BR - W-B Power source (ECU-B Fuse) Power switch on (IG) 10 to 14 V
    O4-8 (FSR+) -O4-4 (FSR-) W-B Center airbag sensor assembly communication line Power switch on (IG) Pulse generation
    O4-9 (BSW) - O4-5 (BGND) P-GR Passenger side buckle switch line Always Below 1 V
    d1-1 (SGD1) - O4-3 (GND) G-W-B Front occupant classification sensor LH ground line Always Below 1 V
    d1-2 (SGD2) - O4-3 (GND) O-W-B Front occupant classification sensor RH ground line Always Below 1 V
    d1-3 (SGD3) - O4-3 (GND) W-W-B Rear occupant classification sensor LH ground line Always Below 1 V
    d1-4 (SGD4) - O4-3 (GND) BR - W-B Rear occupant classification sensor RH ground line Always Below 1 V
    d1-5 (SVC3) - d1-3 (SGD3) GR-W Rear occupant classification sensor LH power supply line Power switch on (IG), a load is applied to rear occupant classification sensor LH 4.5 to 5.1 V
    d1-6 (SVC4) - d1-4 (SGD4) V-BR Rear occupant classification sensor RH power supply line Power switch on (IG), a load is applied to rear occupant classification sensor RH 4.5 to 5.1 V
    d1-7 (SIG1) - d1-1 (SGD1) SB-G Front occupant classification sensor LH signal line Power switch on (IG), a load is applied to front occupant classification sensor LH 0.2 to 4.9 V
    d1-8 (SIG2) - d1-2 (SGD2) L-O Front occupant classification sensor RH signal line Power switch on (IG), a load is applied to front occupant classification sensor RH 0.2 to 4.9 V
    d1-9 (SIG3) - d1-3 (SGD3) Y-W Rear occupant classification sensor LH signal line Power switch on (IG), a load is applied to rear occupant classification sensor LH 0.2 to 4.9 V
    d1-10 (SIG4)- d-M (SGD4) R-BR Rear occupant classification sensor RH signal line Power switch on (IG), a load is applied to rear occupant classification sensor RH 0.2 to 4.9 V
    d1-11 (SVC1)- d1-1 (SGD1) R-G Front occupant classification sensor LH power supply line Power switch on (IG), a load is applied to front occupant classification sensor LH 4.5 to 5.1 V
    d1-12 (SVC2) - d1-2 (SGD2) W-O Front occupant classification sensor RH power supply line Power switch on (IG), a load is applied to front occupant classification sensor RH 4.5 to 5.1 V
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