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

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE If there are no DTCs output and the problem still occurs, check the circuits for each problem symptom in the order given in the following table and proceed to the relevant ...

Diagnosis System

DIAGNOSIS SYSTEM 1. DESCRIPTION When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle a ...

Other materials about Toyota Venza:

Reporting safety defects for U.S. owners
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying Toyota Motor Sales, U.S.A., Inc. (T ...

Lost Communication with ECM (U0101,U0073,U0126,U0129,U0142,U0182,U1000)
DESCRIPTION The DTCs are stored when the CAN communication system is malfunctioning. DTC No. DTC Detection Condition Trouble Area U0101 Lost communication with ECM CAN communication syst ...

Open / Short in Steering Lock ECU (B2781)
DESCRIPTION If the steering lock ECU (steering lock actuator assembly) determines that there is a malfunction inside the ECU, it outputs this DTC. Diagnostic communication between the steering lock ECU (steering lock actuator assembly) and the Techstream ...