Terminals Of Ecu
WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK OCCUPANT CLASSIFICATION ECU ECU TERMINAL REFERENCE TABLE
Terminal No. (Symbols) Wiring Color Terminal Description Condition Specification Y2-1 (+B) - Y2-3 (GND)*1
Q11-1 (+B) - Q11-3 (GND)*2R - W-B Battery Ignition switch ON 11 to 14 V Y2-2 (DIA) - Y2-3 (GND)*1
Q11-2 (DIA) - Q11-3 (GND)*2BR - W-B Diagnosis (DLC3) Ignition switch ON Pulse generation Y2-3 (GND) - Body ground*1
Q11-3 (GND) - Body ground*2W-B - Body ground Ground Always Below 1 Ω Y2-4- (FSR-) - Y2-3 (GND)*1
Q11-4- (FSR-) - Q11-3 (GND)*2B - W-B Center airbag sensor communication ground line Always Below 1 Ω Y2-5 (BGND) - Y2-3 (GND)*1
Q11-5 (BGND) - Q11-3 (GND)*2O - W-B Passenger side buckle switch ground line Always Below 1 Ω Y2-7 (IG) - Y2-3 (GND)*1
Q11-7 (IG) - Q11-3 (GND)*2SB - W-B Power source (IGN fuse) Ignition switch ON 11 to 14 V Y2-8 (FSR+) - Y2-4 (FSR-)*1
Q11-8 (FSR+) - Q11-4 (FSR-)*2W - B Center airbag sensor communication line Ignition switch ON Pulse generation Y2-9 (BSW) - Y2-5 (BGND)*1
Q11-9 (BSW) - Q11-5 (BGND)*2L - O Passenger side buckle switch line Buckle switch ON 0.12 to 0.18 A Buckle switch OFF 0.4 to 0.7 mA Y1-1 (SGD1) - Y2-3 (GND)*1
Y1-1 (SGD1) - Q11-3 (GND)*2Y - W-B Front occupant detection sensor LH ground line Always Below 1 Ω Y1-2 (SGD2) - Y2-3 (GND)*1
Y1-2 (SGD2) - Q11-3 (GND)*2SB - W-B Front occupant detection sensor RH ground line Always Below 1 Ω Y1-3 (SGD3) - Y2-3 (GND)*1
Y1-3 (SGD3) - Q11-3 (GND)*2L - W-B Rear occupant detection sensor LH ground line Always Below 1 Ω Y1-4 (SGD4) - Y2-3 (GND)*1
Y1-4 (SGD4) - Q11-3 (GND)*2W - W-B Rear occupant detection sensor RH ground line Always Below 1 Ω Y1-11 (SVC1) - Y1-1 (SGD1) P - Y Front occupant detection sensor LH power supply line Ignition switch ON, load is applied to front occupant detection sensor LH 4.5 to 5.1 V Y1-12 (SVC2) - Y1-2 (SGD2) BR - SB Front occupant detection sensor RH power supply line Ignition switch ON, load is applied to front occupant detection sensor RH 4.5 to 5.1 V Y1-5 (SVC3) - Y1-3 (SGD3) R - L Rear occupant detection sensor LH power supply line Ignition switch ON, load is applied to rear occupant detection sensor LH 4.5 to 5.1 V Y1-6 (SVC4) - Y1-4 (SGD4) B - W Rear occupant detection sensor RH power supply line Ignition switch ON, load is applied to rear occupant detection sensor RH 4.5 to 5.1 V Y1-7 (SIG1) - Y1-1 (SGD1) O - Y Front occupant detection sensor LH signal line Ignition switch ON, load is applied to front occupant detection sensor LH Pulse generation Y1-8 (SIG2) - Y1-2 (SGD2) GR - SB Front occupant detection sensor RH signal line Ignition switch ON, load is applied to front occupant detection sensor RH Pulse generation Y1-9 (SIG3) - Y1-3 (SGD3) G - L Rear occupant detection sensor LH signal line Ignition switch ON, load is applied to rear occupant detection sensor LH Pulse generation Y1-10 (SIG4) - Y1-4 (SGD4) V - W Rear occupant detection sensor RH signal line Ignition switch ON, load is applied to rear occupant detection sensor RH Pulse generation HINT:
*1: for Power Seat
*2: for Manual SeatIf the result is not as specified, the ECU may have a malfunction.