Toyota Yaris: Vehicle Stability Control System / Brake Pressure Sensor "A" Circuit Voltage Above Threshold (C054017)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Brake Pressure Sensor "A" Circuit Voltage Above Threshold (C054017)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

C054017

Brake Pressure Sensor "A" Circuit Voltage Above Threshold

When vehicle speed exceeds 3 km/h (2 mph) and stop light switch assembly is OFF, master cylinder pressure continuously exceeds 1.764 MPa (18.0 kgf/cm2, 255 psi) for 5 seconds or more.

  • Wire harness and connector
  • Stop light switch assembly
  • Master cylinder pressure sensor (brake actuator assembly)
  • Master cylinder pressure sensor circuit malfunction
  • Skid control ECU (brake actuator assembly)

Brake

WIRING DIAGRAM

Refer to DTC C13807E.

Click here

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • After replacing the skid control ECU (brake actuator assembly), perform "Calibration".

    Click here

PROCEDURE

1.

CLEAR DTC

(a) Operate the GTS to clear the codes.

Chassis > Brake > Clear DTCs

(b) Press the DTC clear button.

(c) Turn the ignition switch off.

NEXT

2.

RECONFIRM DTC

(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.

(b) Operate the GTS to read the DTCs.

Chassis > Brake > Trouble Codes

(c) Check if the same DTC is output.

Result

Proceed to

Only C054017 is output

A

C054017 and P057113 are output

B

None of the above conditions are met

C

B

GO TO DTC CHART (P057113)

C

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

A

3.

READ VALUE USING GTS (STOP LIGHT SW)

(a) Operate the GTS to check the Data List.

Chassis > Brake > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop Light SW

Stop light switch assembly

(STP terminal input)

OFF / ON

OFF: Brake pedal released

ON: Brake pedal depressed

HINT:

The brake pedal state is determined using the voltage at terminal STP

Chassis > Brake > Data List

Tester Display

Stop Light SW

(b) Check that the stop light switch assembly condition observed on the GTS changes according to brake pedal operation.

OK:

The GTS displays OFF / ON according to brake pedal operation.

NG

GO TO STEP 7

OK

4.

READ VALUE USING GTS (MASTER CYLINDER SENSOR 1)

(a) Operate the GTS to check the Data List.

Chassis > Brake > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Master Cylinder Sensor 1

Master cylinder pressure sensor pressure (value detected by ECU)

Min.: -1.00 MPa

Max.: 23.99 MPa

Brake pedal released: -1.00 to 0.00 MPa

Reading increases when brake pedal is depressed

Chassis > Brake > Data List

Tester Display

Master Cylinder Sensor 1

(b) Start the engine.

(c) Check the value of Data List item Master Cylinder Sensor 1 when the brake pedal is released.

OK:

The value of Data List item Master Cylinder 1 is within standard range.

NG

REPLACE BRAKE ACTUATOR ASSEMBLY

OK

5.

CLEAR DTC

(a) Operate the GTS to clear the codes.

Chassis > Brake > Clear DTCs

(b) Press the DTC clear button.

(c) Turn the ignition switch off.

NEXT

6.

RECONFIRM DTC

(a) Start the engine.

(b) Drive the vehicle and perform a braking test (decelerate the vehicle by depressing the brake pedal).

(c) Operate the GTS to read the DTCs.

Chassis > Brake > Trouble Codes

(d) Check if the same DTC is output.

Result

Proceed to

C054017 is not output

A

C054017 is output

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE BRAKE ACTUATOR ASSEMBLY

7.

CHECK STOP LIGHT SWITCH ASSEMBLY INSTALLATION

(a) Turn the ignition switch off.

(b) Check the stop light switch assembly installation.

Click here

OK:

The stop light switch assembly installation are normal.

NG

INSTALL STOP LIGHT SWITCH ASSEMBLY CORRECTLY

OK

8.

INSPECT STOP LIGHT SWITCH ASSEMBLY

Click here

OK:

The stop light switch assembly is normal.

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

OK

9.

CHECK HARNESS AND CONNECTOR (STP TERMINAL)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

(b) Disconnect the A108 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A108-35 (STP) - Body ground

Stop light switch assembly on (Brake pedal depressed)

8 to 14 V

A108-35 (STP) - Body ground

Stop light switch assembly off (Brake pedal released)

Below 1.5 V

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    ABS Pump Motor Control Circuit Voltage Out of Range (C052C1C)

    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from C052C1C ABS Pump Motor Control Circuit Voltage Out of Range Any of the following is detected: When the +BS terminal voltage is from 9...

    Brake System Control Module "A" Internal Electronic Failure (C059749,...,C13C91C)

    DESCRIPTION The solenoid relay and solenoid valves are built into the brake actuator assembly. The solenoid valves control the brake fluid pressure at each wheel cylinder...

    Other information:

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


    REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during the air conditioning amplifier assembly removal/installation are shown below...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Air Inlet Damper Control Servo Motor Actuator Stuck Off (B143B7F)


    DESCRIPTION The No. 1 blower damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier assembly activates the motor (normal or reverse) based on these signals to move the air inlet damper to the appropriate position, which controls the air inlet switching...

    Categories

    Supplemental Restraint System (SRS) Precautions

    The front and side supplemental restraint systems (SRS) include different types of air bags. Please verify the different types of air bags which are equipped on your vehicle by locating the “SRS AIRBAG” location indicators. These indicators are visible in the area where the air bags are installed.

    The air bags are installed in the following locations:

    The steering wheel hub (driver air bag) The front passenger dashboard (front passenger air bag) The outboard sides of the front seatbacks (side air bags) The front and rear window pillars, and the roof edge along both sides (curtain air bags)

    read more

     
    Copyright © 2022 www.toyaris4.com