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Home >> Toyota >> 2021 >> Camry LE, FWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (W/ Electric Parking Brake System) - Diagnostic Codes (1 Of 4) (Except Hybrid) >> VEHICLE STABILITY CONTROL SYSTEM (w/ Electric Parking Brake System) >> DTC C050C-12: Left Rear Wheel Speed Sensor Circuit Short to Battery [10/2020 - ] >> Procedure

DTC C050C-12: Left Rear Wheel Speed Sensor Circuit Short to Battery [10/2020 - ]: Procedure

  1. CHECK VEHICLE 
    1. Check the vehicle specification.

      Result

      Result Proceed to
      for 2WD A
      for AWD B

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT) 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
      GTY979873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of skid control sensor wire LH (No. 2 parking brake wire assembly)
      (to Rear Speed Sensor LH (Rear Axle Hub and Bearing Assembly LH))

      OK

      The connector is securely connected.

    2. Disconnect the v2 rear speed sensor LH (rear axle hub and bearing assembly LH) connector.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Turn the ignition switch to ON.
    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      v2-2 (LA+) - v2-1 (LA-) Ignition switch on 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH. Refer to  REMOVAL [06/2017 - ] 

    Result: 

    NG 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT) 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
      GTY972998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))

      OK

      The connector is securely connected.

    2. Disconnect the vR1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Turn the ignition switch to ON.
    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      vR1-1 (RL+) - vR1-2 (RL-) Ignition switch on 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    NG 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
      GTY972993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))

      OK

      The connector is securely connected.

    2. Disconnect the A34 skid control ECU (brake actuator assembly) connector.
    3. Disconnect the vR1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.
    4. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      vR1-2 (RL-) - Body ground Always Below 1.5 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

      OK

      The connector is securely connected.

    2. Disconnect the A34 skid control ECU (brake actuator assembly) connector.
    3. Disconnect the vR1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.
    4. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      vR1-1 (RL+) or A34-39 (RL+) - vR1-2 (RL-) or A34-23 (RL-) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [10/2020 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  6. CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT) 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
      GTY979873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of skid control sensor wire LH (No. 2 parking brake wire assembly)
      (to Rear Speed Sensor LH)

      OK

      The connector is securely connected.

    2. Disconnect the v2 rear speed sensor LH connector.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Turn the ignition switch to ON.
    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      v2-2 (LA+) - v2-1 (LA-) Ignition switch on 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REAR SPEED SENSOR LH. Refer to  REMOVAL [03/2020 - ] 

    Result: 

    NG 

    See step  3

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