ELECTRONICALLY CONTROLLED 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 sensor detects wheel speed and sends the appropriate signals to the skid control ECU. These signals are used for ABS control.

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

A01NE5RE17
DTC Code INF Code DTC Detection Condition Trouble Area
C0210/33 277 At a vehicle speed of 10 km/h (6 mph) or more, an open or short signal occurs in the speed sensor circuit.
  • Rear speed sensor RH

  • Speed sensor circuit

  • Sensor installation

  • Speed sensor rotor

  • Skid control ECU

278 More than one speed sensor circuit signal is abnormal.
279 Speed sensor circuit signal is open for 0.5 seconds or more.
280 A momentary interruption of the sensor signal from the speed sensor occurs 255 times or more.
281 Frequency of 2.4 kHz or more is input.
  • Rear speed sensor RH

  • Speed sensor circuit

  • Speed sensor rotor

  • Skid control ECU

288

Either of the following is detected:


  1. With the voltage of IG1 terminal 9.5 V or more, the sensor power supply voltage decreases for 0.5 seconds or more.

  2. With the voltage of IG1 terminal at 9.5 V or more, the sensor power supply voltage fluctuates for 60 seconds or more.


  • Speed sensor circuit

  • Skid control ECU

C0215/34 290 At a vehicle speed of 10 km/h (6 mph) or more, an open or short signal occurs in the speed sensor circuit.
  • Rear speed sensor LH

  • Speed sensor circuit

  • Sensor installation

  • Speed sensor rotor

  • Skid control ECU

291 More than one speed sensor circuit signal is abnormal.
292 Speed sensor circuit signal is open for 0.5 seconds or more.
293 A momentary interruption of the sensor signal from the speed sensor occurs 255 times or more.
294 Frequency of 2.4 kHz or more is input.
  • Rear speed sensor LH

  • Speed sensor circuit

  • Speed sensor rotor

  • Skid control ECU

301

Either of the following is detected:


  1. With the voltage of IG1 terminal 9.5 V or more, the sensor power supply voltage decreases for 0.5 seconds or more.

  2. With the voltage of IG1 terminal at 9.5 V or more, the sensor power supply voltage fluctuates for 60 seconds or more.


  • Speed sensor circuit

  • 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

A01NEV5E01

INSPECTION PROCEDURE

Note

When replacing the skid control ECU, perform initialization and calibration of the linear solenoid valve Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)


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

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Speed Open RR speed sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      -
      RL Speed Open RL speed sensor open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      -
      OK
      There are no momentary interruptions.

      Tech Tips

      Perform the above inspection before removing the sensor and connector.


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


    1. Select the Data List 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 / Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RL Wheel Speed RL wheel speed sensor / Min.: 0 km/h (0 mph), Max.: 326.4 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 intelligent tester.

      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 Reference Chart Click here.

      OK
      The speed value output from the speed sensor displayed on the intelligent tester is the similar speed as indicated on the speedometer.
      Result
      Result Proceed to
      OK A
      NG (for AWD) B
      NG (for 2WD) C

    B
    C
    A
  3. PERFORM TEST MODE INSPECTION (SIGNAL CHECK)


    1. Turn the power switch off.

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

      OK
      All Test Mode DTCs are cleared.
      Result
      Result Proceed to
      OK A
      NG (for AWD) B
      NG (for 2WD) C

    B
    C
    A
  4. RECONFIRM DTC


    1. Turn the power switch off.

    2. Clear the DTCs Click here.

    3. Turn the power switch on (READY).

    4. Drive the vehicle at a speed of 10 km/h (6 mph) or more for at least 60 seconds.

    5. Check if the same DTC is recorded Click here.

      Result
      Result Proceed to
      DTCs (C0210/33 and C0215/34) are not output A
      DTCs (C0210/33 and/or C0215/34) are output (for AWD) B
      DTCs (C0210/33 and/or C0215/34) are output (for 2WD) C

      Tech Tips

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


    B
    C
    A
  5. CHECK REAR SPEED SENSOR INSTALLATION


    1. A01NF5QE45

      Turn the power 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
      8.5 N*m (87 kgf*cm, 75 in.*lbf)

    NG
    OK
  6. CHECK REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR


    1. Remove the rear speed sensor and rear speed sensor rotor Click here and Click here.

    2. Check the speed sensor tip and rear speed sensor rotor.

      OK
      The sensor tip and rotor is free of scratches, oil, and foreign matter.

      Note

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


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


    1. A01NHP4E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Skid Control ECU)

      *2

      Front view of wire harness connector

      (to Rear Speed Sensor)

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

    2. Disconnect the skid control ECU connectors and the rear speed sensor connector.

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      A92-22 (RR+) - R3-2 (RR+) Always Below 1 Ω
      A92-22 (RR+) - Body ground Always 10 kΩ or higher
      A92-21 (RR-) - R3-1 (RR-) Always Below 1 Ω
      A92-21 (RR-) - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      A90-34 (RL+) - R1-3 (RL+) Always Below 1 Ω
      A90-34 (RL+) - Body ground Always 10 kΩ or higher
      A90-35 (RL-) - R1-1 (RL-) Always Below 1 Ω
      A90-35 (RL-) - Body ground Always 10 kΩ or higher

    NG
    OK
  8. CHECK REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR SERRATIONS


    1. A01NEZVE10
      Text in Illustration
      *1

      Component with harness connected

      (Skid Control ECU)

      *2 Normal Signal Waveform

      Turn the power switch off.

    2. Reconnect the skid control ECU connectors and the rear speed sensor connectors.

    3. Connect an oscilloscope to the rear speed sensor terminal of the skid control ECU and body ground.

    4. Check the waveform output when the wheels are rotated.

      OK
      The same waveform is output from all the sensors 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.

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

      Note

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

      Tech Tips

      The rear speed sensor rotor is incorporated into the rear axle hub and bearing assembly.

      If the rear speed sensor rotor needs to be replaced, replace it together with the rear axle hub and bearing assembly.


    NG
    OK
  9. RECONFIRM DTC


    1. Turn the power switch off.

    2. Clear the DTCs Click here.

    3. Turn the power switch on (READY).

    4. Drive the vehicle at a speed of 10 km/h (6 mph) or more for at least 60 seconds.

    5. Check if the same DTC is recorded Click here.

      Result
      Result Proceed to
      DTCs (C0210/33 and 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 Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    B
    A
  10. CHECK REAR SPEED SENSOR INSTALLATION


    1. A01NGKHE02

      Turn the power switch off.

    2. Check the speed sensor installation.

      OK
      There is no clearance between the sensor and rear axle carrier.

    NG
    OK
  11. CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)


    1. A01NFIHE03
      Text in Illustration
      *1 Front view of skid control sensor wire
      *2 for RH
      *3 for LH
      *4

      Front view of wire harness connector

      (to Sensor Side Connector "A")

      *5

      Front view of wire harness connector

      (to Vehicle Side Connector "B")

      *6

      Front view of wire harness connector

      (to Sensor Side Connector "C")

      *7

      Front view of wire harness connector

      (to Vehicle Side Connector "D")

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

    2. Disconnect the skid control sensor wire.

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      n1 ("A"-2) - n1 ("B"-2) Always Below 1 Ω
      n1 ("A"-2) - n1 ("B"-1) Always 10 kΩ or higher
      n1 ("A"-2) - Body ground Always 10 kΩ or higher
      n1 ("A"-1) - n1 ("B"-1) Always Below 1 Ω
      n1 ("A"-1) - n1 ("B"-2) Always 10 kΩ or higher
      n1 ("A"-1) - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      m1 ("C"-2) - m1 ("D"-3) Always Below 1 Ω
      m1 ("C"-2) - m1 ("D"-1) Always 10 kΩ or higher
      m1 ("C"-2) - Body ground Always 10 kΩ or higher
      m1 ("C"-1) - m1 ("D"-1) Always Below 1 Ω
      m1 ("C"-1) - m1 ("D"-3) Always 10 kΩ or higher
      m1 ("C"-1) - Body ground Always 10 kΩ or higher

      Note

      Check the speed sensor signal after replacement Click here.


    NG
    OK
  12. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR SPEED SENSOR)


    1. A01NDFNE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Skid Control ECU)

      *2

      Front view of wire harness connector

      (to Rear Speed Sensor)

      Reconnect the skid control sensor wire (for vehicle side).

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

    3. Disconnect the skid control ECU connectors.

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      A92-22 (RR+) - n1-2 (RR+) Always Below 1 Ω
      A92-22 (RR+) - Body ground Always 10 kΩ or higher
      A92-21 (RR-) - n1-1 (RR-) Always Below 1 Ω
      A92-21 (RR-) - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      A90-34 (RL+) - m1-2 (RL+) Always Below 1 Ω
      A90-34 (RL+) - Body ground Always 10 kΩ or higher
      A90-35 (RL-) - m1-1 (RL-) Always Below 1 Ω
      A90-35 (RL-) - Body ground Always 10 kΩ or higher

    NG
    OK
  13. CHECK REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR SERRATIONS


    1. A01NEZVE10
      Text in Illustration
      *1

      Component with harness connected

      (Skid Control ECU)

      *2 Normal Signal Waveform

      Turn the power switch off.

    2. Reconnect the skid control ECU connectors and the skid control sensor wire (for sensor side).

    3. Connect an oscilloscope to the rear speed sensor terminal of the skid control ECU and body ground.

    4. Check the waveform output when the wheels are rotated.

      OK
      The same waveform is output from all the sensors 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.

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

      Note

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

      Tech Tips

      The rear speed sensor rotor is incorporated into the rear axle hub and bearing assembly.

      If the rear speed sensor rotor needs to be replaced, replace it together with the rear axle hub and bearing assembly.


    NG
    OK
  14. RECONFIRM DTC


    1. Turn the power switch off.

    2. Clear the DTCs Click here.

    3. Turn the power switch on (READY).

    4. Drive the vehicle at a speed of 10 km/h (6 mph) or more for at least 60 seconds.

    5. Check if the same DTC is recorded Click here.

      Result
      Result Proceed to
      DTCs (C0210/33 and 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 Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    B
    A