SEAT BELT WARNING SYSTEM TERMINALS OF ECU


  1. CHECK COMBINATION METER ASSEMBLY

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    1. Disconnect the N40 combination meter assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N40-21 (IG+) - Body ground B - Body ground

      Ignition power supply

      (IG signal)

      		 Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      N40-22 (B) - Body ground P - Body ground Auxiliary battery power supply Always 11 to 14 V
      N40-30 (ES) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the N40 combination meter assembly connector.

    4. Measure the voltage according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N40-10 (PBKL) - Body ground P - Body ground Front passenger side seat belt buckle switch signal Power switch on (IG), front passenger side seat belt fastened 11 to 14 V
      Power switch on (IG), front passenger side seat belt unfastened Below 1 V
      N40-11 (PODS) - Body ground W - Body ground Front passenger seat condition signal Power switch on (IG), sitting on front passenger seat 11 to 14 V
      Power switch on (IG), not sitting on front passenger seat Below 1 V
      N40-31 (EPB) - Body ground GR - Body ground Parking brake switch signal Power switch on (IG), parking brake switch off 11 to 14 V
      Power switch on (IG), parking brake switch on Below 1.5 V

  2. CHECK CENTER AIRBAG SENSOR ASSEMBLY

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    Terminal No. Terminal Symbol Destination
    U12-15*1 LBE+ Front seat inner belt assembly LH
    U12-23*1 LBE- Front seat inner belt assembly LH
    T12-10*2 RBE+ Front seat inner belt assembly RH
    T12-18*2 RBE- Front seat inner belt assembly RH

    • *1: for LHD

    • *2: for RHD