ANTI-LOCK BRAKE SYSTEM, Diagnostic DTC:C0210/33, C0215/34, C1238/38, C1239/39, C1273/73, C1274/74, C1277/77, C1278/78

DTC Code DTC Name
C0210/33 Rear Speed Sensor RH Circuit
C0215/34 Rear Speed Sensor LH Circuit
C1238/38 Foreign Object is Attached on Tip of Rear Speed Sensor RH
C1239/39 Foreign Object is Attached on Tip of Rear Speed Sensor LH
C1273/73 Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)
C1274/74 Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)
C1277/77 Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC)
C1278/78 Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)

DESCRIPTION

Refer to DTCs C0200/31, C0205/32, C1235/35, and C1236/36 Click here.

DTCs C1273/73 to C1278/78 can be deleted when the speed sensor sends a vehicle speed signal or the Test Mode ends. DTCs C1273/73 to C1278/78 are output only in the Test Mode.

DTC No. DTC Detection Condition Trouble Area

C0210/33

C0215/34

With vehicle speed at 6 mph (10 km/h) or more, sensor signal circuit of faulty wheel is open or short for 1 second or more.


  • Momentary interruption of sensor signal of faulty wheel has occurred 7 times or more.


  • Sensor signal circuit is open for 0.5 seconds or more.

  • Rear speed sensor RH/LH

  • Rear speed sensor RH/LH circuit

  • Skid control rotor

  • Sensor installation

  • Brake actuator assembly

C1238/38

C1239/39

 At vehicle speed of 12 mph (20 km/h) or more, condition that noise is included in speed sensor signal continues for 5 seconds or more.

  • Rear speed sensor RH/LH

  • Skid control rotor

  • Sensor installation

  • Brake actuator assembly

Tech Tips


  • DTC C0210/33 and C1238/38 are for the rear speed sensor RH.

  • DTC C0215/34 and C1239/39 are for the rear speed sensor LH.

WIRING DIAGRAM

A01BB6UE01

INSPECTION PROCEDURE

Tech Tips

Start the inspection from step 1 when using the intelligent tester and start from step 3 when not using the intelligent tester.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (MOMENTARY INTERRUPTION OF REAR SPEED SENSOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

    3. Select the DATA LIST mode on the intelligent tester.

      ABS:
      Item (Display) Measurement Item / Range (Display) Normal Condition Diagnostic Note
      RR Speed Open

      Speed sensor open detection

      (RR) / OPN DET or NORMAL

      OPN DET: Momentary interruption

      NORMAL: Normal

      		 -
      RL Speed Open

      Speed sensor open detection

      (RL) / OPN DET or NORMAL

      OPN DET: Momentary interruption

      NORMAL: Normal

      		 -

    4. Check for any momentary interruption in the wire harness and connector corresponding to a DTC Click here.

      OK
      There are no momentary interruptions.

      Tech Tips

      Perform the above inspection before removing the sensor and connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SPEED SENSOR CIRCUIT)

    OK

  2. READ VALUE USING INTELLIGENT TESTER (REAR SPEED SENSOR)


    1. Select the DATA LIST mode on the intelligent tester.

      ABS:
      Item (Display) Measurement Item / Range (Display) Normal Condition Diagnostic Note
      RR Wheel Speed Wheel speed sensor (RR) reading / min.: 0 mph (0 km/h), max.: 202 mph (326 km/h) Actual wheel speed Similar speed as indicated on speedometer
      RL Wheel Speed Wheel speed sensor (RL) reading / min.: 0 mph (0 km/h), max.: 202 mph (326 km/h) Actual wheel speed Similar speed as indicated on speedometer

    2. Check that there is the speed value output from the speed sensor displayed on the intelligent tester and the speed value displayed on the speedometer are almost the same when driving the vehicle.

      OK
      The speed value output from the speed sensor displayed on the intelligent tester is the same as the actual vehicle speed.

    NG

    INSPECT REAR SPEED SENSOR INSTALLATION Click here

    OK

  3. PERFORM TEST MODE (SIGNAL CHECK)


    1. Clear the DTC Click here.

    2. Perform sensor signal check in TEST MODE PROCEDURE Click here.

      OK
      All Test Mode DTCs are erased.
      Result
      Result Proceed to
      NG A
      OK B

    B

    RECONFIRM DTC Click here

    A

  4. INSPECT REAR SPEED SENSOR INSTALLATION


    1. A01BD14E96

      Turn the ignition switch off.

    2. Check the speed sensor installation.

      OK
      The installation nut is tightened properly.
      There is no clearance between the sensor and the rear axle.
      Torque
      8.5 N*m (87 kgf*cm, 75 in.*lbf)

      Note

      Check the speed sensor signal after replacement Click here.


    NG

    INSTALL REAR SPEED SENSOR CORRECTLY OR REPLACE REAR SPEED SENSOR

    OK

  5. INSPECT SPEED SENSOR TIP


    1. Remove the rear speed sensor Click here.

    2. Check the sensor tip.

      OK
      No scratches or foreign matter on the sensor tip.

      Note

      Check the speed sensor signal after cleaning or replacement Click here.


    NG

    CLEAN OR REPLACE REAR SPEED SENSOR

    OK

  6. INSPECT REAR SPEED SENSOR AND SKID CONTROL SENSOR WIRE


    1. A01BFLFE01

      Install the rear speed sensor.

    2. Disconnect the rear speed sensor connector.

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

      Standard resistance
      RH:
      Tester Connection Specified Condition
      2 (RR+) - 1 (RR-) 1.09+-0.2 kΩ at 20°C
      2 (RR+) - Body ground 10 kΩ or higher
      1 (RR-) - Body ground 10 kΩ or higher
      LH:
      Tester Connection Specified Condition
      2 (RL+) - 1 (RL-) 1.09+-0.2 kΩ at 20°C
      2 (RL+) - Body ground 10 kΩ or higher
      1 (RL-) - Body ground 10 kΩ or higher
    4. A01BDA8E01

      Disconnect the skid control sensor wire.

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

      Standard resistance
      RH Side:
      Tester Connection Specified Condition
      "A"-2 - "P1"-4 Below 1 Ω
      "A"-2 - "P1"-3 10 kΩ or higher
      "A"-2 - Body ground 10 kΩ or higher
      "A"-1 - "P1"-3 Below 1 Ω
      "A"-1 - "P1"-4 10 kΩ or higher
      "A"-1 - Body ground 10 kΩ or higher
      LH Side:
      Tester Connection Specified Condition
      "B"-2 - "P1"-2 Below 1 Ω
      "B"-2 - "P1"-1 10 kΩ or higher
      "B"-2 - Body ground 10 kΩ or higher
      "B"-1 - "P1"-1 Below 1 Ω
      "B"-1 - "P1"-2 10 kΩ or higher
      "B"-1 - Body ground 10 kΩ or higher

      Note

      Check the speed sensor signal after replacement Click here.


    NG

    REPLACE REAR SPEED SENSOR OR SKID CONTROL SENSOR WIRE

    OK

  7. CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND REAR SPEED SENSOR)


    1. A01BHB8E01

      Disconnect the skid control ECU connector.

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

      Standard resistance
      RH:
      Tester Connection Specified Condition
      B19-33 (RR+) - P1-4 (RR+) Below 1 Ω
      B19-33 (RR+) - Body ground 10 kΩ or higher
      B19-34 (RR-) - P1-3 (RR-) Below 1 Ω
      B19-34 (RR-) - Body ground 10 kΩ or higher
      LH:
      Tester Connection Specified Condition
      B19-11 (RL+) - P1-2 (RL+) Below 1 Ω
      B19-11 (RL+) - Body ground 10 kΩ or higher
      B19-12 (RL-) - P1-1 (RL-) Below 1 Ω
      B19-12 (RL-) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS


    1. A01BAEME03

      Connect the oscilloscope to terminals RR+ - RR- or RL+ - RL- of the skid control ECU.

    2. Drive the vehicle at about 19 mph (30 km/h), and check the signal waveform.

      OK
      A waveform as shown in the figure should be output.

      Tech Tips


      • As vehicle speed (wheel rotation speed) increases, the width of the waveform narrows and the fluctuation in the output voltage becomes greater.

      • When noise is identified in the waveform on the oscilloscope, error signals are generated due to rotor scratches, looseness or foreign matter attached to the speed sensor.


    NG

    INSPECT REAR SKID CONTROL ROTOR Click here

    OK

  9. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Drive the vehicle at a speed of approximately 20 mph (32 km/h) or more for 60 seconds or more.

    3. Check that the same DTCs are recorded Click here.

      Tech Tips

      Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.

      Result
      Condition Proceed to
      DTCs (C0210/33, C0215/34, C1238/38 and C1239/39) are output A
      DTCs (C0210/33, C0215/34, C1238/38 and C1239/39) are not output (When troubleshooting in accordance with the DTC CHART) B
      DTCs (C0210/33, C0215/34, C1238/38 and C1239/39) are not output (When troubleshooting in accordance with the PROBLEM SYMPTOMS TABLE) C

    B

    END

    C

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

    A

  10. INSPECT REAR SKID CONTROL ROTOR


    1. Turn the ignition switch off.

    2. Remove the rear axle shaft Click here.

    3. Check the rotor.

      OK
      No scratches, oil, or foreign matter on the rotors.

      Note

      Check the speed sensor signal after cleaning or replacement Click here.


    NG

    CLEAN OR REPLACE REAR SKID CONTROL ROTOR

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY