Terminals Of Ecu

WARNING: This page is about a different car, the 2009 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

OCCUPANT CLASSIFICATION ECU

Fig 1: Identifying Occupant Classification ECU Connector Terminals

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
T16-5 (GND) - Body ground	W-B - Body ground	Occupant classification ECU ground line	Always	Below 1 V
T16-6 (PS) - T16-15 (GPS)	LG - W	Pressure sensor signal line	Engine switch on (IG)	0 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	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)	10 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 line (-)	Always	Below 1 V
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 V
T16-15 (GPS) - T16-5 (GND)	W - W-B	Pressure sensor ground line	Always	Below 1 V
T16-16 (BT) - T16-5 (GND)	R - W-B	Belt tension sensor signal line	Engine switch on (IG)	0 to 5 V
T16-17 (VBT) - T16-5 (GND)	P - W-B	Belt tension sensor +B line	Engine switch on (IG)	4.75 to 5.25 V