Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Brake Switch "A" Circuit Open (P057113)

DESCRIPTION

The skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied.

The skid control ECU (brake actuator assembly) has a detection circuit that it uses to detect an open in the stop light input line.

If the skid control ECU (brake actuator assembly) detects an open in this circuit, it will store this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P057113

Brake Switch "A" Circuit Open

An open in the stop light switch assembly input line continues for 3 seconds or more.

  • Stop light switch assembly
  • Wire harness or connector
  • Skid control ECU (brake actuator assembly)

WIRING DIAGRAM

Refer to DTC C117B62.

Click here

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY OUTPUT CIRCUIT)

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

OK:

The connector is securely connected.

*a

Component with harness connected

(Stop Light Switch Assembly)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A53-3 (L) - Body ground

Brake pedal depressed

11 to 14 V

A53-3 (L) - Body ground

Brake pedal released

Below 1.5 V

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

OK

2.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY INPUT CIRCUIT)

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

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

(b) Disconnect the A151 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

A151-4 (STP) - Body ground

Brake pedal depressed

11 to 14 V

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    READ NEXT:

     Lost Communication With ECM/PCM "A" Missing Message (U010087,...,U130957)

    DESCRIPTION The skid control ECU (brake actuator assembly) communicates with the following ECUs and sensors via CAN communication. ECM TCM Yaw rate and acceleration sensor (airbag ECU ass

     ABS Warning Light Remains ON

    DESCRIPTION This procedure is for troubleshooting when the ABS warning light remains on but no DTCs are output. The skid control ECU (brake actuator assembly) controls the ABS warning light in t

     ABS Warning Light does not Come ON

    DESCRIPTION The skid control ECU (brake actuator assembly) controls the ABS warning light in the combination meter assembly via CAN communication. PROCEDURE 1. INSPECT COMB

    SEE MORE:

     Precaution

    PRECAUTION TROUBLESHOOTING PRECAUTION NOTICE: Since the brake lines are critical safety related parts, be sure to disassemble and inspect the components if a brake fluid leak is found. If any abnormalities are found, replace the component with a new one. When removing brake componen

     New Key Registration Warning Message is not Displayed

    DESCRIPTION If the new key registration warning message is not displayed after an electrical key transmitter sub-assembly has been registered, there may be communication problem between the certification ECU (smart key ECU assembly) and combination meter assembly (meter ECU). CAUTION / NOTICE / HINT

    © 2020-2024 Copyright www.tcorollacross.com