Terminals Of Ecu

WARNING: This page is about a different car, the 2009 Lexus GS 460 and 2009 Lexus GS 350. 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 Terminal a17

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
a17-5 (GND) - Body ground	W-B - Body ground	Occupant classification ECU ground line	Always	Below 1 Ω
a17-6 (PS) - a17-15 (GPS)	P - V	Pressure sensor signal line	Engine switch on (IG)	Below 1 V
a17-7 (VPS) - a17-5 (GND)	R - W-B	Pressure sensor +B line	Engine switch on (IG)	4.75 to 5.25 V
a17-8 (GBT) - a17-5 (GND)	GR - W-B	Belt tension sensor ground line	Always	Below 1 V
a17-9 (IG) - a17-5 (GND)	L - W-B	Occupant classification ECU +B line	Engine switch on (IG)	10 to 14 V
a17-10 (DIA) - a17-5 (GND)	R - W-B	Diagnosis (DLC3)	Engine switch on (IG)	Pulse generation
a17-11 (FSR+) - a17-12 (FSR-)	L - P	Center airbag sensor communication line	Engine switch on (IG)	Pulse generation
a17-12 (FSR-) - a17-5 (GND)	P - W-B	Center airbag sensor communication line (-)	Always	Below 1 Ω
a17-13 (BSW) - a17-14 (BGND)	W - Y	Passenger side buckle switch line	Engine switch on (IG)	Low: 4 to 7 mA Hi: 12 to 18 mA
a17-14 (BGND) - a17-5 (GND)	Y - W-B	Passenger side buckle switch ground line	Always	Below 1 Ω
a17-15 (GPS) - a17-5 (GND)	V - W-B	Pressure sensor ground line	Always	Below 1 Ω
a17-16 (BT) - a17-5 (GND)	BR - W-B	Belt tension sensor signal line	Engine switch on (IG)	Below 1 V
a17-17 (VBT) - a17-5 (GND)	G - W-B	Belt tension sensor +B line	Engine switch on (IG)	4.75 to 5.25 V