OCCUPANT CLASSIFICATION SYSTEM TERMINALS OF ECU


  1. OCCUPANT DETECTION ECU

    A01XOARE20

    Tech Tips

    Since the occupant detection ECU uses waterproof connectors, the voltage and waveform cannot be inspected directly. Standard voltage and resistance readings and waveforms are indicated for reference only.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    f14-1 (SVC1) - f14-5 (SGD1) R - G Front occupant classification sensor LH power supply Engine switch on (IG) 4.9 to 5.1 V
    f14-2 (SVC3) - f14-6 (SGD3) GR - W Rear occupant classification sensor LH power supply Engine switch on (IG) 4.9 to 5.1 V
    f14-3 (SIG1) - f14-5 (SGD1) P - G Front occupant classification sensor LH signal Engine switch on (IG) Pulse generation
    f14-4 (SIG3) - f14-6 (SGD3) SB - W Rear occupant classification sensor LH signal Engine switch on (IG) Pulse generation
    f14-5 (SGD1) - f15-3 (GND) G - W-B Front occupant classification sensor LH ground Always Below 1 V
    f14-6 (SGD3) - f15-3 (GND) W - W-B Rear occupant classification sensor LH ground Always Below 1 V
    f15-1 (+B) - f15-3 (GND) W - W-B Power source (+B) Engine switch off 11 to 14 V
    f15-2 (DIA) GR Diagnosis (DLC3) -* -*
    f15-3 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
    f15-4 (FSR-) - f15-3 (GND) LG - W-B Airbag ECU assembly communication signal Always Below 1 V
    f15-5 (BGND) - f15-3 (GND) P - W-B Front passenger side buckle switch ground Always Below 1 V
    f15-6 (IG2) - f15-3 (GND) B - W-B Power source (IG) Engine switch on (IG) 11 to 14 V
    f15-7 (FSR+) - f15-4 (FSR-) L - LG Airbag ECU assembly communication signal Engine switch on (IG) Pulse generation
    f15-8 (BSW) - f15-5 (BGND) G - P Front Passenger side buckle switch signal Always Pulse generation

    • *: As this is a line that is connected to other systems, voltage changes according to the systems that are connected.

  2. AIRBAG ECU ASSEMBLY

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