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 cleared 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.

Tech Tips

When the connectors between the speed sensor and skid control ECU (brake actuator assembly) are connected, the following waveform is output.

B007VV9E02
Text in Illustration
*1 Rear Speed Sensor *2 Rear Skid Control Rotor
*a

Waveform (Reference):

Between Speed Sensor (-) and Body Ground

 *b Low speed
*c High speed - -
DTC No. DTC Detection Condition Trouble Area

C0210/33

C0215/34

  • With the vehicle speed 10 km/h (6 mph) or higher, an open or short circuit in the speed sensor signal circuit continuously occurs for 15 seconds or more.

  • An open in the speed sensor signal circuit continues for 0.5 seconds or more.

  • From when the ignition switch is turned to ON until it is turned off, a speed sensor momentary open circuit signal occurs 255 times or more.

  • Rear speed sensor RH/LH

  • Rear speed sensor RH/LH circuit

  • Skid control rotor

  • Sensor installation

  • Skid control ECU (brake actuator assembly)

C1238/38

C1239/39

 With the vehicle speed 20 km/h (12 mph) or higher, noise is detected 75 times in the speed sensor signal within 5 seconds.

  • Rear speed sensor RH/LH

  • Skid control rotor

  • Sensor installation

  • Skid control ECU (brake actuator assembly)

C1273/73

C1274/74

 Detected only during Test Mode.

  • Rear speed sensor RH/LH

  • Skid control rotor

  • Sensor installation

C1277/77

C1278/78

 Detected only during Test Mode.

  • Rear speed sensor RH/LH

  • Skid control rotor

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

B007OFOE02

INSPECTION PROCEDURE

PROCEDURE


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


    1. Using a GTS, check for any momentary interruption in the wire harness and connector corresponding to the DTC Click here.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Speed Open Rear speed sensor RH open detection / Error or Normal Normal Error: Momentary interruption
      RL Speed Open Rear speed sensor LH open detection / Error or Normal Normal Error: Momentary interruption
      OK
      Normal (There are no momentary interruptions.)

      Tech Tips

      Perform the above inspection before removing the sensor and connector.


    NG

    CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - REAR SPEED SENSOR) Click here

    OK

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


    1. Select the DATA LIST mode on the GTS.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Wheel Speed Rear wheel speed sensor RH reading / min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RL Wheel Speed Rear wheel speed sensor LH reading / min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations

    2. Check that the speed value output from the speed sensor displayed on the GTS 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 GTS is the same as the actual vehicle speed.

    NG

    INSPECT REAR SPEED SENSOR INSTALLATION Click here

    OK

  3. PERFORM TEST MODE (SIGNAL CHECK)


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

      OK
      All Test Mode DTCs are cleared.

    NG

    INSPECT REAR SPEED SENSOR INSTALLATION Click here

    OK

  4. RECONFIRM DTC


    1. Clear the DTCs Click here.

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

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

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

      Tech Tips

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    B

    REPLACE REAR SPEED SENSOR Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  5. INSPECT REAR SPEED SENSOR INSTALLATION


    1. Turn the ignition switch off.

    2. B007W6NE01
      Text in Illustration
      *a Normal
      *b Abnormal
      *c Clearance

      Check the speed sensor installation Click here.

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

      Note

      Check the speed sensor signal after replacement Click here.


    NG

    INSTALL REAR SPEED SENSOR CORRECTLY OR REPLACE REAR SPEED SENSOR

    OK

  6. 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


      • If no damage to the speed sensor tip is found during this inspection, do not replace the speed 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 replacement Click here.


    NG

    CLEAN OR REPLACE REAR SPEED SENSOR

    OK

  7. INSPECT REAR SKID CONTROL ROTOR


    1. Remove the rear axle shaft with backing plate Click here.

    2. Check the rear skid control rotor.

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

      Note

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

    3. Reinstall the rear speed sensor and the rear axle shaft with backing plate Click here for speed sensor, Click here for rear axle shaft with backing plate).


    NG

    CLEAN OR REPLACE REAR SKID CONTROL ROTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - REAR SPEED SENSOR)


    1. Turn the ignition switch off.

    2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

    3. Disconnect the B19 skid control ECU (brake actuator assembly) connector and the P1 rear speed sensor connector.

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

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT REAR SPEED SENSOR RH


    1. B007SLHE01
      Text in Illustration
      *1 Rear Speed Sensor RH
      *a

      Front view of wire harness connector

      (to Sensor Side Connector)
      *b

      Front view of wire harness connector

      (to Vehicle Side Connector)

      Turn the ignition switch off.

    2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

    3. Disconnect the A rear speed sensor RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-3 - P1-1 (RL-) Always Below 1 Ω
      A-3 or P1-1 (RL-) - Body ground Always 10 kΩ or higher
      A-1 - P1-2 (RL+) Always Below 1 Ω
      A-1 or P1-2 (RL+) - Body ground Always 10 kΩ or higher

      Note

      Check the speed sensor signal after replacement Click here.


    NG

    REPLACE REAR SPEED SENSOR RH Click here

    OK

  10. INSPECT BRAKE ACTUATOR ASSEMBLY


    1. B007T6DE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rear Speed Sensor RH)

      Reconnect the B19 skid control ECU (brake actuator assembly) connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      for RH
      Tester Connection Switch Condition Specified Condition
      P1-4 (RR+) - Body ground Ignition switch ON 5.7 to 14 V
      for LH
      Tester Connection Switch Condition Specified Condition
      P1-2 (RL+) - Body ground Ignition switch ON 5.7 to 14 V

      Note

      Check the speed sensor signal after replacement Click here.


    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    OK

  11. RECONFIRM DTC


    1. Reconnect the A and P1 rear speed sensor RH connectors.

    2. Clear the DTCs Click here.

    3. Drive the vehicle at a speed of approximately 30 km/h (19 mph) or more for 60 seconds or more.

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

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

    B

    REPLACE REAR SPEED SENSOR Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  12. REPLACE REAR SPEED SENSOR


    1. Replace the rear speed sensor Click here.

      Note

      Check the speed sensor signal after replacement Click here.


    NEXT

  13. RECONFIRM DTC


    1. Clear the DTCs Click here.

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

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

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

    B

    REPLACE REAR SKID CONTROL ROTOR Click here

    A

    END

  14. REPLACE REAR SKID CONTROL ROTOR


    1. Replace the rear skid control rotor Click here.

      Note

      Check the speed sensor signal after replacement Click here.


    NEXT

  15. RECONFIRM DTC


    1. Clear the DTCs Click here.

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

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

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

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

    END