ANTI-LOCK BRAKE SYSTEM, Diagnostic DTC:C0210/33, C0215/34, C1273/73, C1274/74

DTC Code DTC Name
C0210/33 Rear Speed Sensor RH Circuit
C0215/34 Rear Speed Sensor LH Circuit
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)

DESCRIPTION

The speed sensors detect wheel speed and transmit the signals to the ECU. These signals are used for control of the ABS control system. Each of the front and rear rotors has 48 serrations.

When the rotors rotate, the magnetic field generated by the permanent magnet in the speed sensor induces an AC voltage.

Since the frequency of this AC voltage changes in direct proportion to the speed of the rotor, the frequency is used by the ECU to detect the speed of each wheel.

DTCs C1273/73 and C1274/74 can be deleted when the speed sensor sends a wheel speed signal or the Test Mode ends. DTCs C1273/73 and C1274/74 are output only in the Test Mode.

A01CIC4E20
DTC Code DTC Detection Condition Trouble Area

C0210/33

C0215/34

When any of the following is detected:


  1. At a vehicle speed of 10 km/h (6 mph) or more, an open or short in the sensor signal circuit continues for 15 seconds or more.

  2. Momentary interruption of the sensor signal from the abnormal wheel occurs 7 times or more.

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

  • Rear speed sensor RH/LH

  • Speed sensor circuit

  • Speed sensor rotor

  • Sensor installation

  • Skid control ECU

C1273/73

C1274/74

 Detected only during Test Mode.

  • Rear speed sensor RH/LH

  • Sensor installation

  • Speed sensor rotor

Tech Tips


  • DTCs C0210/33 and C1273/73 are for the rear speed sensor RH.

  • DTCs C0215/34 and C1274/74 are for the rear speed sensor LH.

WIRING DIAGRAM

A01CISGE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE ON INTELLIGENT TESTER (REAR SPEED SENSOR)


    1. Replace the normal DLC3 cable (12 V specification) for the intelligent tester with the 24 V DLC3 cable.

      Note

      Be sure to use the 24 V DLC3 cable when connecting the intelligent tester to the DLC3. Using the normal DLC3 cable (12 V specification) will cause damage to the tester.

    2. Connect the intelligent tester to the DLC3.

    3. Start the engine.

    4. Select the Data List mode on the intelligent tester Click here.

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

    5. Check that there is no difference between the speed value output from the speed sensor displayed on the intelligent tester and the actual speed value when driving the vehicle.

      Tech Tips

      Factors that affect the indicated vehicle speed include tire size, tire inflation, and tire wear. The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, see the reference chart Click here.

      OK
      The speed value output from the speed sensor displayed on the intelligent tester is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

    NG

    CHECK REAR SPEED SENSOR INSTALLATION Click here

    OK

  2. PERFORM TEST MODE (SIGNAL CHECK)


    1. Perform sensor check in the Test Mode procedure Click here.

      OK
      All Test Mode DTCs are not output.

    NG

    CHECK REAR SPEED SENSOR INSTALLATION Click here

    OK

  3. RECONFIRM DTC


    1. Turn the ignition switch off.

    2. Clear the DTC (See Pub. No. RM1008E, page 05-195).

    3. Start the engine.

    4. Drive the vehicle at the speed of 20 km/h (12 mph) or more for at least 30 seconds.

    5. Check if the same DTC is recorded (See Pub. No. RM1008E, page 05-195).

      Result
      Result Proceed to
      DTCs (C0210/33 and/or C0215/34) are not output A
      DTCs (C0210/33 and/or C0215/34) are 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

    INSPECT REAR SPEED SENSOR Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here

  4. CHECK REAR SPEED SENSOR INSTALLATION


    1. A01CJG2E03

      Turn the ignition switch off.

    2. Check the speed sensor installation.

      OK
      There is no clearance between the sensor and the rear axle carrier.
      The installation bolt is tightened properly.
      Torque:
      8.0 N*m  { 82 kgf*cm, 71 in.*lbf }

    NG

    INSTALL REAR SPEED SENSOR CORRECTLY

    OK

  5. CHECK REAR SPEED SENSOR TIP


    1. Remove the rear speed sensor (See Pub. No. RM1008E, page 32-90).

    2. Check the speed 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


    1. A01CHKYE02

      Turn the ignition switch off.

    2. Install the rear speed sensor.

    3. Disconnect the 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
      1 (RR+) - 2 (RR-) Always 1.4 to 1.8 kΩ at 20°C (68°F)
      1 (RR+) - Body ground Always 10 kΩ or higher
      2 (RR-) - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      1 (RL+) - 2 (RL-) Always 1.4 to 1.8 kΩ at 20°C (68°F)
      1 (RL+) - Body ground Always 10 kΩ or higher
      2 (RL-) - Body ground Always 10 kΩ or higher

      Note

      Check the speed sensor signal after replacement Click here.


    NG

    REPLACE REAR SPEED SENSOR

    OK

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


    1. A01CGLUE01

      Disconnect the skid control ECU connector.

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

      Standard resistance
      for RH
      Tester Connection Condition Specified Condition
      S13-16 (RR+) - A16-1 (RR+) Always Below 1 Ω
      S13-16 (RR+) - Body ground Always 10 kΩ or higher
      S13-15 (RR-) - A16-2 (RR-) Always Below 1 Ω
      S13-15 (RR-) - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      S13-22 (RL+) - A15-1 (RL+) Always Below 1 Ω
      S13-22 (RL+) - Body ground Always 10 kΩ or higher
      S13-23 (RL-) - A15-2 (RL-) Always Below 1 Ω
      S13-23 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK SPEED SENSOR AND SPEED SENSOR ROTOR SERRATIONS


    1. A01CHAXE02

      Reconnect the skid control ECU connector and the rear speed sensor connector.

    2. Connect the oscilloscope to the rear speed sensor terminal of the skid control ECU.

    3. Check that waveform is output by each sensor circuit when the tires are rotated.

      OK
      The same waveform is output from all the 4 wheels and there is no noise or interference in the waveform.

      Tech Tips


      • As the vehicle speed (wheel revolution speed) increases, a cycle of the waveform narrows and the output voltage becomes greater.


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

      Note

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


    NG

    CLEAN OR REPLACE SPEED SENSOR OR SPEED SENSOR ROTOR

    OK

  9. RECONFIRM DTC


    1. Turn the ignition switch off.

    2. Clear the DTC (See Pub. No. RM1008E, page 05-195).

    3. Start the engine.

    4. Drive the vehicle at the speed of 20 km/h (12 mph) or more for at least 30 seconds.

    5. Check if the same DTC is recorded (See Pub. No. RM1008E, page 05-195).

      Result
      Result Proceed to
      DTCs (C0210/33 and/or C0215/34) are not output A
      DTCs (C0210/33 and/or C0215/34) are 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 SKID CONTROL ECU

    A

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here