SEAT BELT WARNING SYSTEM TERMINALS OF ECU


  1. CHECK COMBINATION METER

    A01ERIQE01
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    E77-21 (B) - Body ground R - Body ground Combination meter +B line Always 11 to 14 V
    E77-30 (IG+) - Body ground B - Body ground Combination meter IG line Engine switch on (IG) 11 to 14 V
    E77-26 (ET) - Body ground BR - Body ground Ground Always Below 1 Ω
    E77-39 (WRNP) - Body ground LG - Body ground Passenger seat belt signal Passenger seat is occupied, seat belt is fastened Below 1 V
    Passenger seat is occupied, seat belt is unfastened 11 to 14 V

  2. CHECK MULTI-DISPLAY

    A01EQJZE22
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    F78-13 (GND1) - Body ground BR - Body ground Ground Always Below 1 Ω
    F78-12 (+B2) - Body ground R - Body ground Multi-display +B line Always 11 to 14 V
    F78-24 (ACC) - Body ground GR - Body ground Multi-display ACC line Engine switch on (ACC) 11 to 14 V
    F78-23 (IG) - Body ground G - Body ground Multi-display IG line Engine switch on (IG) 11 to 14 V
    F78-9 (PBEW) - Body ground LG - Body ground Passenger seat belt warning signal Passenger seat is occupied, seat belt is fastened Below 1 V
    Passenger seat is occupied, seat belt is unfastened 11 to 14 V

  3. CHECK CENTER AIRBAG SENSOR

    A01EO5XE18
    Terminal No. Symbol Destination
    K27-10*1 LBE+ Front seat inner belt LH (Seat belt buckle switch LH)
    K27-18*1 LBE- Front seat inner belt LH (Seat belt buckle switch LH)
    L27-15*2 RBE+ Front seat inner belt RH (Seat belt buckle switch RH)
    L27-23*2 RBE- Front seat inner belt RH (Seat belt buckle switch RH)

    *1: for LHD

    *2: for RHD