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Terminals Of Ecu

  1. OCCUPANT CLASSIFICATION ECU 
    Fig 1: W2 & W3 Occupant Classification ECU Connector Terminal Identification
    GTY228982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    W3-1 (+B) - W3-3 (GND) W - W-B Battery Always 11 to 14 V
    W3-2 (DIA) - W3-3 (GND) GR - W-B Diagnosis (DLC3) Power switch on (IG) Pulse generation
    W3-3 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
    W3-4 (FSR-) - W3-3 (GND) LG - W-B Center airbag sensor assembly communication line Always Below 1 V
    W3-5 (BGND) - W3-3 (GND) P - W-B Passenger side buckle switch ground line Always Below 1 V
    W3-7 (IG) - W3-3 (GND) B - W-B Power source Power switch on (IG) 11 to 14 V
    W3-8 (FSR+) - W3-4 (FSR-) L - LG Center airbag sensor assembly communication line Power switch on (IG) Pulse generation
    W3-9 (BSW) - W3-5 (BGND) G - P Passenger side buckle switch line Always Pulse generation
    W2-1 (SGD1) - W3-3 (GND) G - W-B Front occupant classification sensor LH ground line Always Below 1 V
    W2-2 (SGD2) - W3-3 (GND) LG - W-B Front occupant classification sensor RH ground line Always Below 1 V
    W2-3 (SGD3) - W3-3 (GND) W - W-B Rear occupant classification sensor LH ground line Always Below 1 V
    W2-4 (SGD4) - W3-3 (GND) BR - W-B Rear occupant classification sensor RH ground line Always Below 1 V
    W2-5 (SVC3) - W2-3 (SGD3) GR - W Rear occupant classification sensor LH power supply line Power switch on (IG) 4.9 to 5.1 V
    W2-6 (SVC4) - W2-4 (SGD4) V - BR Rear occupant classification sensor RH power supply line Power switch on (IG) 4.9 to 5.1 V
    W2-7 (SIG1) - W2-1 (SGD1) P - G Front occupant classification sensor LH signal line Power switch on (IG), a load applied to front occupant classification sensor LH 0 to 5.1 V
    W2-8 (SIG2) - W2-2 (SGD2) L - LG Front occupant classification sensor RH signal line Power switch on (IG), a load applied to front occupant classification sensor RH 0 to 5.1 V
    W2-9 (SIG3) - W2-3 (SGD3) SB - W Rear occupant classification sensor LH signal line Power switch on (IG), a load applied to rear occupant classification sensor LH 0 to 5.1 V
    W2-10 (SIG4) - W2-4 (SGD4) B - BR Rear occupant classification sensor RH signal line Power switch on (IG), a load applied to rear occupant classification sensor RH 0 to 5.1 V
    W2-11 (SVC1) - W2-1 (SGD1) R - G Front occupant classification sensor LH power supply line Power switch on (IG) 4.9 to 5.1 V
    W2-12 (SVC2) - W2-2 (SGD2) W - LG Front occupant classification sensor RH power supply line Power switch on (IG) 4.9 to 5.1 V
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