VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1415, C1416

DTC Code DTC Name
C1415 Rear Speed Sensor RH Output Malfunction
C1416 Rear Speed Sensor LH Output Malfunction

DESCRIPTION

Refer to DTCs C1403 and C1404 Click here.

DTC No. DTC Detection Condition Trouble Area

C1415

C1416

Any of the following is detected:


  1. An open in the sensor signal circuit of a malfunctioning area occurs 255 times or more.

  2. At a vehicle speed of 20 km/h (12 mph) or more, noise occurs in the sensor signals of a malfunctioning wheel 75 times or more within 5 seconds.

  3. At a vehicle speed of 10 km/h (6 mph) or more, noise occurs once per rotor rotation for 15 seconds or more.

  • Rear speed sensor RH/LH

  • Speed sensor circuit

  • Sensor installation

  • Rear speed sensor rotor RH/LH (rear axle hub and bearing assembly RH/LH)

  • Skid control ECU (brake actuator assembly)

Tech Tips


  • DTC C1415 is for the rear speed sensor RH.

  • DTC C1416 is for the rear speed sensor LH.

WIRING DIAGRAM

Refer to DTCs C1403 and C1404 Click here.

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)


    1. Using the 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 Sensor Voltage Open Rear speed sensor RH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      RL Speed Sensor Voltage Open Rear speed sensor LH voltage open detection / Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -
      OK
      Normal (There are no momentary interruptions.)

      Tech Tips

      Perform the above inspection before removing the sensor and connector.


    NG

    CHECK REAR SPEED SENSOR INSTALLATION Click here

    OK

  2. READ VALUE USING GTS (REAR SPEED SENSOR)


    1. Select the Data List using the GTS Click here.

      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 the speed value output from the speed sensor displayed on the GTS.

      Tech Tips

      Factors that affect the indicated vehicle speed include tire size, tire pressure, 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 GTS is similar to the speed indicated on the speedometer.

    NG

    CHECK REAR SPEED SENSOR INSTALLATION Click here

    OK

  3. RECONFIRM DTC


    1. Turn the engine switch off.

    2. Clear the DTCs Click here.

    3. Turn the engine switch off.

    4. Start the engine.

    5. Perform a road test.

    6. Check if the same DTC is output Click here.

      Result
      Result Proceed to
      DTCs C1415 and C1416 are not output. A
      DTCs C1415 and/or C1416 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 before replacing parts Click here.


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

  4. CHECK REAR SPEED SENSOR INSTALLATION


    1. A01W3LCE03
      Text in Illustration
      *1 Rear Speed Sensor
      *a Correct
      *b Incorrect
      *c No clearance

      Turn the engine switch off.

    2. Check the speed sensor installation.

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

    NG

    INSTALL REAR SPEED SENSOR CORRECTLY Click here

    OK

  5. INSPECT SKID CONTROL SENSOR WIRE


    1. A01W3I1E02
      Text in Illustration
      *A for RH
      *B for LH
      *a Front view of skid control sensor wire
      *b

      Front view of wire harness connector

      (to Sensor Side Connector)
      *c

      Front view of wire harness connector

      (to Vehicle Side Connector)

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

    2. Remove 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
      b1-2 (RR+) - bQ2-1 (RR+) Always Below 1 Ω
      b1-2 (RR+) - bQ2-2 (RR-) Always 10 kΩ or higher
      b1-2 (RR+) - Body ground Always 10 kΩ or higher
      b1-1 (RR-) - bQ2-2 (RR-) Always Below 1 Ω
      b1-1 (RR-) - bQ2-1 (RR+) Always 10 kΩ or higher
      b1-1 (RR-) - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      b2-2 (RL+) - bP2-1 (RL+) Always Below 1 Ω
      b2-2 (RL+) - bP2-2 (RL-) Always 10 kΩ or higher
      b2-2 (RL+) - Body ground Always 10 kΩ or higher
      b2-1 (RL-) - bP2-2 (RL-) Always Below 1 Ω
      b2-1 (RL-) - bP2-1 (RL+) Always 10 kΩ or higher
      b2-1 (RL-) - Body ground Always 10 kΩ or higher

      Note

      Check the speed sensor signal after replacement Click here.


    NG

    REPLACE SKID CONTROL SENSOR WIRE Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - SKID CONTROL SENSOR WIRE)


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

    2. Disconnect the A40 skid control ECU (brake actuator assembly) connector.

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      A40-16 (RR+) - bQ2-1 (RR+) Always Below 1 Ω
      A40-16 (RR+) - Body ground Always 10 kΩ or higher
      A40-15 (RR-) - bQ2-2 (RR-) Always Below 1 Ω
      A40-15 (RR-) - Body ground Always 10 kΩ or higher
      for LH
      Tester Connection Condition Specified Condition
      A40-29 (RL+) - bP2-1 (RL+) Always Below 1 Ω
      A40-29 (RL+) - Body ground Always 10 kΩ or higher
      A40-28 (RL-) - bP2-2 (RL-) Always Below 1 Ω
      A40-28 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT BRAKE ACTUATOR ASSEMBLY (SENSOR INPUT)


    1. A01W1VUE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control Sensor Wire)

      Reconnect the A40 skid control ECU (brake actuator assembly) connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      for RH
      Tester Connection Condition Specified Condition
      bQ2-1 (RR+) - Body ground Engine switch on (IG) 8 to 14 V
      for LH
      Tester Connection Condition Specified Condition
      bP2-1 (RL+) - Body ground Engine switch on (IG) 8 to 14 V

      Note

      Check the speed sensor signal after 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 the rear axle hub and bearing assembly with rear speed sensor.

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


    OK

    REPLACE REAR AXLE HUB AND BEARING ASSEMBLY WITH REAR SPEED SENSOR Click here

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here