SEAT BELT WARNING SYSTEM(w/ Occupant Classification System) TERMINALS OF ECU


  1. CHECK METER CIRCUIT PLATE

    B004PCTN08

    1. Disconnect the F6 meter circuit plate connector.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F6-22 (B) - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      F6-21 (IG+) - Body ground G - Body ground Ignition power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      F6-28 (ES) - Body ground W-B - Body ground Ground Always Below 1 Ω

  2. CHECK AIRBAG ECU ASSEMBLY

    B004QXPN81
    Terminal No. Terminal Symbol Destination
    M1-10 LBE+ Front seat inner belt assembly LH
    M1-18 LBE- Front seat inner belt assembly LH

  3. CHECK OCCUPANT DETECTION ECU

    B004OG8N42

    1. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      a11-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
      a11-6 (IG2) - a11-10 (GND) B - W-B Power source Power switch on (IG) 11 to 14 V
      a11-9 (BGND) - a11-10 (GND) P - W-B Front passenger buckle switch ground Always Below 1 V
      a11-7 (BSW) - a11-9 (BGND) G - P Front passenger buckle switch signal Always Pulse generation
      a10-1 (SVC1) - a10-5 (SGD1) R - G Front occupant classification sensor LH power supply Power switch on (IG) 11 to 14 V
      a10-2 (SVC3) - a10-6 (SGD3) GR - W Rear occupant classification sensor LH power supply Power switch on (IG) 11 to 14 V
      a10-3 (SIG1) - a10-5 (SGD1) P - G Front occupant classification sensor LH signal Power switch on (IG) Pulse generation
      a10-4 (SIG3) - a10-6 (SGD3) SB - W Rear occupant classification sensor LH signal Power switch on (IG) Pulse generation
      a10-5 (SGD1) - a11-10 (GND) G - W-B Front occupant classification sensor LH ground Always Below 1 V
      a10-6 (SGD3) - a11-10 (GND) W - W-B Rear occupant classification sensor LH ground Always Below 1 V