Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Terminals Of Ecu

TERMINALS OF ECU

1. TERMINALS OF ECU

Text in Illustration

*1	Component without harness connected (Brake Actuator (Skid Control ECU))

Terminal No. (Symbol)	Terminal Description
1 (GND2)	Pump motor ground
2 (+BM)	Motor relay power supply
3 (+BS)	Solenoid relay power supply
4 (GND1)	Skid control ECU ground
5 (FL-)	Front wheel speed LH (-) signal input
6 (RL+)	Rear wheel speed LH (+) signal input
8 (RR+)	Rear wheel speed RH (+) signal input
9 (FR+)	Front wheel speed RH (+) signal input
10 (FR-)	Front wheel speed RH (-) signal input
11 (D/G)	Diagnosis tester communication line
13 (STP2)	Stop light control relay input
14 (CANL)	CAN communication line L
16 (TS)	Sensor check input
17 (CSW)	VSC OFF switch input
20 (FSW+)	Brake pedal load sensing switch input
26 (FL+)	Front wheel speed LH (+) signal input
27 (RL-)	Rear wheel speed LH (-) signal input
28 (IG1)	ECU power supply
29 (RR-)	Rear wheel speed RH (-) signal input
30 (STP)	Stop light switch input
33 (SP1)	Speed signal output for speedometer
35 (CANH)	CAN communication line H
39 (STP0)	Stop light control relay output

2. TERMINAL INSPECTION

(a) Disconnect the connector and measure the voltage and resistance on the wire harness side.

Text in Illustration

*1	Front view of wire harness connector (to Brake Actuator (Skid Control ECU))

HINT:

Voltage cannot be measured with the connector connected to the skid control ECU because the connector is watertight.

Standard

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A42-1 (GND2) - Body ground	W-B - Body ground	Pump motor ground	Always	Below 1 Ω
A42-2 (+BM) - Body ground	Y - Body ground	Motor relay power supply	Always	11 to 14 V
A42-3 (+BS) - Body ground	GR - Body ground	Solenoid relay power supply	Always	11 to 14 V
A42-4 (GND1) - Body ground	W - Body ground	Skid control ECU ground	Always	Below 1 Ω
A42-13 (STP2) - Body ground	R - Body ground	Stop light control relay input	Stop light switch ON → OFF (Brake pedal depressed → released)	8 to 14 V → Below 1.5 V
A42-17 (CSW) - Body ground	LG - Body ground	VSC OFF switch input	VSC OFF switch held ON → OFF (Not pressed)	Below 1 Ω → 10 kΩ or higher
A42-20 (FSW+) - Body ground	R - Body ground	Brake pedal load sensing switch input	Brake pedal load sensing switch OFF → ON (Brake pedal depressed → released)	950 to 1050 Ω → 203 to 223 Ω
A42-28 (IG1) - Body ground	GR - Body ground	ECU power supply	Ignition switch ON	11 to 14 V
A42-30 (STP) - Body ground	P - Body ground	Stop light switch input	Stop light switch ON → OFF (Brake pedal depressed → released)	8 to 14 V → Below 1.5 V
A42-39 (STP0) - Body ground	BR - Body ground	Stop light control relay output	Ignition switch ON	11 to 14 V

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