Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / Supplemental Restraint Systems / Occupant Classification System / Terminals Of Ecu

TERMINALS OF ECU

1. OCCUPANT CLASSIFICATION ECU (for Power Seat)

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specification
S12-1 (+B) - S12-3 (GND)	GR - W-B	Battery	Always	10 to 14 V
S12-2 (DIA) - S12-3 (GND)	SB - W-B	Diagnosis (DLC3)	Ignition switch ON	Pulse generation
S12-3 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 V
S12-4 (FSR-) - S12-3 (GND)	B - W-B	Center airbag sensor assembly communication line (-)	Always	Below 1 V
S12-5 (BGND) - S12-3 (GND)	GR - W-B	Passenger side buckle switch ground line	Always	Below 1 V
S12-7 (IG) - S12-3 (GND)	V - W-B	Power source (ECU-B fuse)	Ignition switch ON	10 to 14 V
S12-8 (FSR+) - S12-4 (FSR-)	W - B	Center airbag sensor assembly communication line	Ignition switch ON	Pulse generation
S12-9 (BSW) - S12-5 (BGND)	L - GR	Passenger side buckle switch line	Always	4 to 14 V
S13-1 (SGD1) - S12-3 (GND)	R - W-B	Front occupant classification sensor LH ground line	Always	Below 1 V
S13-2 (SGD2) - S12-3 (GND)	Y - W-B	Front occupant classification sensor RH ground line	Always	Below 1 V
S13-3 (SGD3) - S12-3 (GND)	BR - W-B	Rear occupant classification sensor LH ground line	Always	Below 1 V
S13-4 (SGD4) - S12-3 (GND)	LG - W-B	Rear occupant classification sensor RH ground line	Always	Below 1 V
S13-5 (SVC3) - S13-3 (SGD3)	G - BR	Rear occupant classification sensor LH power supply line	Ignition switch ON, a load applied to rear occupant classification sensor LH	4.9 to 5.1 V
S13-6 (SVC4) - S13-4 (SGD4)	GR - LG	Rear occupant classification sensor RH power supply line	Ignition switch ON, a load applied to rear occupant classification sensor RH	4.9 to 5.1 V
S13-7 (SIG1) - S13-1 (SGD1)	P - R	Front occupant classification sensor LH signal line	Ignition switch ON, a load applied to front occupant classification sensor LH	0 to 5.1 V
S13-8 (SIG2) - S13-2 (SGD2)	GR - Y	Front occupant classification sensor RH signal line	Ignition switch ON, a load applied to front occupant classification sensor RH	0 to 5.1 V
S13-9 (SIG3) - S13-3 (SGD3)	L - BR	Rear occupant classification sensor LH signal line	Ignition switch ON, a load applied to rear occupant classification sensor LH	0 to 5.1 V
S13-10 (SIG4) - S13-4 (SGD4)	SB - LG	Rear occupant classification sensor RH signal line	Ignition switch ON, a load applied to rear occupant classification sensor RH	0 to 5.1 V
S13-11 (SVC1) - S13-1 (SGD1)	Y - R	Front occupant classification sensor LH power supply line	Ignition switch ON, a load applied to front occupant classification sensor LH	4.9 to 5.1 V
S13-12 (SVC2) - S13-2 (SGD2)	V - Y	Front occupant classification sensor RH power supply line	Ignition switch ON, a load applied to front occupant classification sensor RH	4.9 to 5.1 V

2. OCCUPANT CLASSIFICATION ECU (for Manual Seat)

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specification
M14-1 (+B) - M14-3 (GND)	G - W-B	Battery	Always	10 to 14 V
M14-2 (DIA) - M14-3 (GND)	SB - W-B	Diagnosis (DLC3)	Ignition switch ON	Pulse generation
M14-3 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 V
M14-4 (FSR-) - M14-3 (GND)	B - W-B	Center airbag sensor assembly communication line (-)	Always	Below 1 V
M14-5 (BGND) - M14-3 (GND)	Y - W-B	Passenger side buckle switch ground line	Always	Below 1 V
M14-7 (IG) - M14-3 (GND)	V - W-B	Power source (ECU-B fuse)	Ignition switch ON	10 to 14 V
M14-8 (FSR+) - M14-4 (FSR-)	W - B	Center airbag sensor assembly communication line	Ignition switch ON	Pulse generation
M14-9 (BSW) - M14-5 (BGND)	G - Y	Passenger side buckle switch line	Always	4 to 14 V
S13-1 (SGD1) - M14-3 (GND)	Y - W-B	Front occupant classification sensor LH ground line	Always	Below 1 V
S13-2 (SGD2) - M14-3 (GND)	SB - W-B	Front occupant classification sensor RH ground line	Always	Below 1 V
S13-3 (SGD3) - M14-3 (GND)	L - W-B	Rear occupant classification sensor LH ground line	Always	Below 1 V
S13-4 (SGD4) - M14-3 (GND)	W - W-B	Rear occupant classification sensor RH ground line	Always	Below 1 V
S13-5 (SVC3) - S13-3 (SGD3)	R - L	Rear occupant classification sensor LH power supply line	Ignition switch ON, a load applied to rear occupant classification sensor LH	4.9 to 5.1 V
S13-6 (SVC4) - S13-4 (SGD4)	B - W	Rear occupant classification sensor RH power supply line	Ignition switch ON, a load applied to rear occupant classification sensor RH	4.9 to 5.1 V
S13-7 (SIG1) - S13-1 (SGD1)	BE - Y	Front occupant classification sensor LH signal line	Ignition switch ON, a load applied to front occupant classification sensor LH	0 to 5.1 V
S13-8 (SIG2) - S13-2 (SGD2)	GR - SB	Front occupant classification sensor RH signal line	Ignition switch ON, a load applied to front occupant classification sensor RH	0 to 5.1 V
S13-9 (SIG3) - S13-3 (SGD3)	G - L	Rear occupant classification sensor LH signal line	Ignition switch ON, a load applied to rear occupant classification sensor LH	0 to 5.1 V
S13-10 (SIG4) - S13-4 (SGD4)	V - W	Rear occupant classification sensor RH signal line	Ignition switch ON, a load applied to rear occupant classification sensor RH	0 to 5.1 V
S13-11 (SVC1) - S13-1 (SGD1)	P - Y	Front occupant classification sensor LH power supply line	Ignition switch ON, a load applied to front occupant classification sensor LH	4.9 to 5.1 V
S13-12 (SVC2) - S13-2 (SGD2)	BR - SB	Front occupant classification sensor RH power supply line	Ignition switch ON, a load applied to front occupant classification sensor RH	4.9 to 5.1 V

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