Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Right Front Wheel Speed Sensor Circuit Short to Battery (C050612)

DESCRIPTION

Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS control.

The speed sensor detects the magnetic fields of the speed sensor rotor as it rotates and outputs a pulse signal.

The frequency of the pulse varies in accordance with the rotational speed of the speed sensor rotor and the system uses this to determine the wheel speed.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C050612

Right Front Wheel Speed Sensor Circuit Short to Battery

A short to +B in the speed sensor signal circuit is detected for 0.12 seconds or more.

  • Front speed sensor RH
  • Wire harness or connector
  • Skid control ECU (brake actuator assembly)

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)

(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 Front Speed Sensor RH)

(b) Disconnect the A34 front speed sensor RH connector.

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

OK:

No deformation or corrosion.

(d) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A34-2 (FR+) - A34-1 (FR-)

Ignition switch ON

11 to 14 V

OK

REPLACE FRONT SPEED SENSOR RH

NG

2.

CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR RH - BRAKE ACTUATOR ASSEMBLY)

(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 Front Speed Sensor RH)

(b) Disconnect the A151 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the A34 front speed sensor RH connector.

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

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A34-1 (FR-) - Body ground

Always

Below 1.5 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR RH - BRAKE ACTUATOR ASSEMBLY)

(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.

(b) Disconnect the A151 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the A34 front speed sensor RH connector.

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

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A34-2 (FR+) or A151-21 (FR+) - A34-1 (FR-) or A151-26 (FR-)

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    READ NEXT:

     Right Front Wheel Speed Sensor Circuit Short to Ground or Open (C050614)

    DESCRIPTION Refer to DTC C050612 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C050614 Right Front

     Right Front Wheel Speed Sensor Circuit Voltage Out of Range (C05061C)

    DESCRIPTION Refer to DTC C050612 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C05061C Right Front

     Right Front Wheel Speed Sensor Circuit Intermittent (C05061F)

    DESCRIPTION Refer to DTC C050612 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C05061F Right Front

    SEE MORE:

     Fail-safe Chart

    FAIL-SAFE CHART DTC Trouble Area Parking Brake Indicator Light (Red) Brake System Warning Light (Yellow Indicator) Fail-safe Deactivation Condition C059746 Skid control ECU (brake actuator assembly) internal malfunct

     Installation

    INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 FRONT SEAT INNER BELT ASSEMBLY 73230 - - 2 SEPARATE TYPE FRONT SEATBACK COVER 71073S - - - 3 FRONT SEAT ASSEMBLY

    © 2020-2024 Copyright www.tcorollacross.com