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

DTC Code DTC Name
C0210/33 Right Rear Wheel Speed Sensor Signal Malfunction
C0215/34 Left Rear Wheel Speed Sensor Signal Malfunction
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.

DTCs C1273/73, C1274/74, C1277/77 and C1278/78 can be deleted when the speed sensor sends a vehicle speed signal or the test mode ends. DTCs C1273/73, C1274/74, C1277/77 and C1278/78 are output only in the test mode.

DTC No. DTC Detection Condition Trouble Area

C0210/33

C0215/34

When one of following occurs


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

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

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

  • Rear speed sensor

  • Rear speed sensor circuit

  • Rear speed sensor rotor

  • Sensor installation

C1238/38

C1239/39

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

  • Rear speed sensor

  • Rear speed sensor circuit

  • Sensor installation
C1273/73 Detected only during test mode

  • Rear speed sensor RH

  • Sensor installation

  • Rear speed sensor rotor RH
C1274/74 Detected only during test mode

  • Rear speed sensor LH

  • Sensor installation

  • Rear speed sensor rotor LH
C1277/77 Detected only during test mode

  • Rear speed sensor rotor RH
C1278/78 Detected only during test mode

  • Rear speed sensor rotor LH

Tech Tips


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

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

WIRING DIAGRAM

A01J73VE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHOOSE DIAGNOSIS METHOD


    1. Choose the diagnosis method.

      Method
      Method Proceed to
      Using intelligent tester A
      Not using intelligent tester B

    B

    INSPECT REAR SPEED SENSOR Click here

    A

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


    1. Check the Data List for proper functioning of the rear speed sensor.

      Skid control ECU
      Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
      RR Wheel Speed

      Wheel speed sensor (RR)

      reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph)

      		 Actual wheel speed Speed similar to that of speedometer
      RL Wheel Speed

      Wheel speed sensor (RL)

      reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph)

      		 Actual wheel speed Speed similar to that of speedometer
      OK
      There is almost no difference between actual wheel speed and displayed speed value.

      Tech Tips

      There is a tolerance of +/-10% in the speedometer indication.


    NG

    INSPECT REAR SPEED SENSOR Click here

    OK

  3. INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS

    A01J4KLE02

    1. Connect an oscilloscope to terminals 33 (RR+) and 34 (RR-), and 11 (RL+) and 12 (RL-) of the S2 skid control ECU connector.

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

      OK
      A waveform is output, as shown in the illustration.

      Tech Tips


      • As vehicle speed (wheel revolution speed) increases, the wavelength shortens and the fluctuation in the output voltage becomes greater.

      • Scratches, looseness or foreign matter on the speed sensor rotor cause noise (errors) in the signal waveform.


    NG

    INSPECT REAR SPEED SENSOR (INSTALLATION) Click here

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY

  4. INSPECT REAR SPEED SENSOR

    A01J5HAE01

    1. Disconnect the S19 and S20 sensor connectors.

    2. Measure the resistance of the sensors.

      Standard resistance
      LH
      Tester Connection Specified Condition
      1 (RL-) - 2 (RL+) 0.75 to 2.0 kΩ
      1 (RL-) - Body ground 10 kΩ or higher
      2 (RL+) - Body ground 10 kΩ or higher
      RH
      Tester Connection Specified Condition
      1 (RR-) - 2 (RR+) 0.75 to 2.0 kΩ
      1 (RR-) - Body ground 10 kΩ or higher
      2 (RR+) - Body ground 10 kΩ or higher

      Tech Tips

      Check the speed sensor signal after the speed sensor replacement.


    NG

    REPLACE REAR SPEED SENSOR

    OK

  5. CHECK WIRE HARNESS (SKID CONTROL ECU - REAR SPEED SENSOR)

    A01J51WE04

    1. Disconnect the S2 ECU connector.

    2. Disconnect the S19 and S20 sensor connectors.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      LH
      Tester Connection Specified Condition
      S2-11 (RL+) - S19-2 (RL+) Below 1 Ω
      S2-12 (RL-) - S19-1 (RL-) Below 1 Ω
      S19-2 (RL+) - Body ground 10 kΩ or higher
      S19-1 (RL-) - Body ground 10 kΩ or higher
      RH
      Tester Connection Specified Condition
      S2-33 (RR+) - S20-2 (RR+) Below 1 Ω
      S2-34 (RR-) - S20-1 (RR-) Below 1 Ω
      S20-2 (RR+) - Body ground 10 kΩ or higher
      S20-1 (RR-) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  6. INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS

    A01J4KLE02

    1. Connect an oscilloscope to terminals 33 (RR+) and 34 (RR-), and 11 (RL+) and 12 (RL-) of the S2 skid control ECU connector.

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

      OK
      A waveform is output, as shown in the illustration.

      Tech Tips


      • As vehicle speed (wheel revolution speed) increases, the wavelength shortens and the fluctuation in the output voltage becomes greater.

      • Scratches, looseness or foreign matter on the speed sensor rotor cause noise (errors) in the signal waveform.


    NG

    INSPECT REAR SPEED SENSOR (INSTALLATION) Click here

    OK

  7. CHECK IF DTC OUTPUT RECURS


    1. Clear the DTCs.

    2. Drive the vehicle at approximately 30 km/h (19 mph) or more for 60 seconds or more.

    3. Check for DTCs.

      Result
      Result Proceed to
      DTC is output A
      DTC is not output B

    B

    END

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY

  8. INSPECT REAR SPEED SENSOR (INSTALLATION)

    A01J6RFE08

    1. Check the speed sensor installation Click here.

      OK
      The installation bolt is tightened properly.
      There is no clearance between the sensor and rear axle housing.

      Tech Tips

      Check the speed sensor signal after the speed sensor replacement.


    NG

    SECURELY REINSTALL REAR SPEED SENSOR

    OK

  9. INSPECT REAR SPEED SENSOR (TIP)


    1. Remove the rear speed sensor.

    2. Check the sensor tip.

      OK
      No scratches or foreign matter on sensor tip.

      Tech Tips


      • If the sensor is contaminated with oil or other foreign material, clean the sensor.

      • If there is iron powder sticking to the rotor, this will result in a malfunction, so confirm that the rotor is not contaminated with foreign material before replacing the sensor.

      • Check the speed sensor signal after cleaning or replacing the speed sensor.

      Note

      Do not replace the speed sensor if no damage to the speed sensor tip is found.


    NG

    CLEAN OR REPLACE SPEED SENSOR

    OK

  10. INSPECT SPEED SENSOR ROTOR


    1. Remove the rear axle shaft with backing plate.

    2. Check the sensor rotor serrations.

      OK
      No scratches, missing teeth or foreign matter on sensor rotor.

      Tech Tips


      • If foreign matter is attached, remove it and check the output waveform after reassembly.

      • Check the speed sensor signal after cleaning or replacing the speed sensor rotor.


    NG

    CLEAN OR REPLACE SPEED SENSOR ROTOR

    OK

  11. CHECK IF DTC OUTPUT RECURS


    1. Clear the DTCs.

    2. Drive the vehicle at approximately 30 km/h (19 mph) or more for 60 seconds or more.

    3. Check for DTCs.

      Result
      Result Proceed to
      DTC is output A
      DTC is not output B

    B

    END

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY