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.

CHECK OCCUPANT CLASSIFICATION ECU

Fig 1: Identifying Occupant Classification ECU Connector Terminals

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
T16-5 (GND) - Body ground	W-B - Body ground	Occupant classification ECU ground line	Always	Below 1 Ω
T16-6 (PS) - T16-15 (GPS)	LG - W	Pressure sensor signal line	Engine switch on (IG)	Below 1 to 5 V
T16-7 (VPS) - T16-5 (GND)	Y - W-B	Pressure sensor +B line	Engine switch on (IG)	4.75 to 5.25 V
T16-8 (GBT) - T16-5 (GND)	G - W-B	Seat belt tension sensor ground line	Always	Below 1 V
T16-9 (IG) - T16-5 (GND)	B - W-B	Occupant classification ECU +B line	Engine switch on (IG)	11 to 14 V
T16-10 (DIA) - T16-5 (GND)	W - W-B	Diagnosis (DLC3)	Engine switch on (IG)	Pulse generation
T16-11 (FSR+) - T16-12 (FSR-)	W - B	Center airbag sensor assembly communication line	Engine switch on (IG)	Pulse generation
T16-12 (FSR-) - T16-5 (GND)	B - W-B	Center airbag sensor assembly communication ground line	Always	Below 1 Ω
T16-13 (BSW) - T16-14 (BGND)	B - GR	Passenger side buckle switch line	Engine switch on (IG)	Low: 4 to 7 mA Hi: 12 to 18 mA
T16-14 (BGND) - T16-5 (GND)	GR - W-B	Passenger side buckle switch ground line	Always	Below 1 Ω
T16-15 (GPS) - T16-5 (GND)	W - W-B	Pressure sensor ground line	Always	Below 1 Ω
T16-16 (BT) - T16-5 (GND)	R - W-B	Seat belt tension sensor signal line	Engine switch on (IG)	Below 1 to 5 V
T16-17 (VBT) - T16-5 (GND)	P - W-B	Seat belt tension sensor +B line	Engine switch on (IG)	4.75 to 5.25 V