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

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

Diagnosis System

DIAGNOSIS SYSTEM 1. CHECK DLC3 (a) Check the DLC3 (See page ). 2. FUNCTION OF PASSENGER AIRBAG ON/OFF INDICATOR (a) Initial check. (1) Turn the ignition switch to ON. (2) The passenger airbag O ...

Other materials about Toyota Venza:

System Description
SYSTEM DESCRIPTION 1. ENGINE IMMOBILISER SYSTEM DESCRIPTION The immobiliser system is a theft deterrent system that determines whether to disable starting of the SFI system based on a comparison of the key ID code and the vehicle pre-registered code. The ...

Pressure Control Solenoid "C" Electrical (Shift Solenoid Valve SL3) (P0798)
DESCRIPTION Changing from 1st to 6th is performed by the TCM turning shift solenoid valves SL1, SL2, SL3, SL4 and SL on and off. If an open or short circuit occurs in any of the shift solenoid valves, the TCM controls the remaining normal shift solenoid ...

Inspection
INSPECTION PROCEDURE 1. INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (w/o Smart Key System) (a) Measure the voltage according to the value(s) in the table below. Text in Illustration *1 Component with harness c ...