Toyota Yaris: Vehicle Stability Control System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Terminals Of Ecu

TERMINALS OF ECU

TERMINALS OF ECU

*a

Component without harness connected

(Skid Control ECU [Brake Actuator Assembly])

-

-

Terminal No. (Symbol)

Terminal Description

1 (GND2)

Pump motor ground

2

- (Not used)

3

- (Not used)

4

- (Not used)

5 (STP2)

Stop light switch assembly input

6

- (Not used)

7

- (Not used)

8

- (Not used)

9

- (Not used)

10 (CANL)

CAN communication line L

11

- (Not used)

12 (IGR)

ECU power supply input

13 (BM)

Motor relay power supply

14 (SP1)

Speed signal output for speedometer

15 (RR-)

Rear wheel speed RH (-) signal input

16 (RR+)

Rear wheel speed RH (+) power supply output

17 (FL-)

Front wheel speed LH (-) signal input

18 (FL+)

Front wheel speed LH (+) power supply output

19

- (Not used)

20

- (Not used)

21

- (Not used)

22 (CANH)

CAN communication line H

23

- (Not used)

24

- (Not used)

25 (GND1)

Skid control ECU (brake actuator assembly) ground

26 (STPO)

Stop light switch assembly output

27

- (Not used)

28 (RL-)

Rear wheel speed LH (-) signal input

29 (RL+)

Rear wheel speed LH (+) power supply output

30 (FR-)

Front wheel speed RH (-) signal input

31 (FR+)

Front wheel speed RH (+) power supply output

32

- (Not used)

33 (CSW)

VSC OFF switch (combination switch assembly) input

34

- (Not used)

35 (STP)

Stop light switch assembly input

36 (CA2H)

CAN communication line H

37 (CA2L)

CAN communication line L

38 (+BS)

Solenoid relay power supply

TERMINAL INSPECTION

(a) Disconnect the A108 connector and measure the voltage or resistance on the wire harness side.

*a

Front view of wire harness connector

(to Skid Control ECU [Brake Actuator Assembly])

-

-

HINT:

Voltage cannot be measured with the connector connected to the skid control ECU (brake actuator assembly) as the connector is watertight.

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

A108-1 (GND2) - Body ground

Pump motor ground

Always

Below 1 Ω

A108-5 (STP2) - Body ground

Stop light switch assembly input

Brake pedal depressed → released

8 to 14 V → Below 1.5 V

A108-12 (IGR) - Body ground

ECU power supply input

Ignition switch ON

10.5 to 16 V

A108-13 (BM) - Body ground

Motor relay power supply

Always

11 to 14 V

A108-14 (SP1) - Body ground

Speed signal output for speedometer

Ignition switch ON

11 to 14 V

A108-25 (GND1) - Body ground

Skid control ECU (brake actuator assembly) ground

Always

Below 1 Ω

A108-26 (STPO) - Body ground

Stop light switch assembly output

Ignition switch ON

11 to 14 V

A108-33 (CSW) - Body ground

VSC OFF switch (combination switch assembly) input

VSC OFF switch (combination switch assembly) pressed and held → released

Below 1 Ω → 10 kΩ or higher

A108-35 (STP) - Body ground

Stop light switch assembly input

Stop light switch assembly on → off

(Brake pedal depressed → released)

8 to 14 V → Below 1.5 V

A108-38 (+BS) - Body ground

Solenoid relay power supply

Always

11 to 14 V

    Diagnosis System

    DIAGNOSIS SYSTEM DESCRIPTION When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the GTS to the vehicle and reading various data output from the vehicle's skid control ECU (brake actuator assembly)...

    Dtc Check / Clear

    DTC CHECK / CLEAR DTC CHECK (a) Operate the GTS to read the DTCs. Chassis > Brake > Trouble Codes (b) Check the details of the DTCs. NOTICE: Make sure to clear the DTCs after repair...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Problem Symptoms Table


    PROBLEM SYMPTOMS TABLE NOTICE: If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration. Click here 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 listed in order of probability in the "Suspected Area" column of the table...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: System Diagram


    S..

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