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Terminals Of Ecu

WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK SEAT BELT CONTROL ECU 
    Fig 1: Identifying Seat Belt Control ECU
    GTY133904Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Value
    Q58-2 (MOR+) - Q58-8 (PGND) SB - W-B Seat belt motor RH power source line Engine switch on (IG) 4.0 to 8.5 V
    Q58-3 (MOL+) - Q58-8 (PGND) BR - W-B Seat belt motor LH power source line Engine switch on (IG) 4.0 to 8.5 V
    Q59-8 (IG1) - Body ground B - Body ground Seat belt control ECU power source line Engine switch on (IG) 11 to 14 V
    Q59-1 (CANH) - Body ground B - Body ground CAN communication Engine idling Pulse generation
    Q59-2 (CANL) - Body ground W - Body ground CAN communication Engine idling Pulse generation
    Q58-7 (+B) - Body ground W - Body ground Seat belt control ECU power source line Always 11 to 14 V
    Q58-1 (MOR-) - Body ground B - Body ground Seat belt motor RH ground line Engine switch on (IG) 4.0 to 8.5 V
    Q58-4 (MOL-) - Body ground L - Body ground Seat belt motor LH ground line Engine switch on (IG) 4.0 to 8.5 V
    Q58-8 (PGND) - Body ground W-B - Body ground Seat belt control ECU ground line Always Below 1 Ω
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