ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1413, C1414

DTC Code DTC Name
C1413 Front Speed Sensor RH Circuit Output
C1414 Front Speed Sensor LH Circuit Output

DESCRIPTION

Each speed sensor detects the wheel speed and sends the signals to the skid control ECU (brake booster with master cylinder assembly). These signals are used for ABS control.

Tech Tips

The output voltage values shown below are for when the vehicle wire harnesses are connected to the skid control ECU (brake booster with master cylinder assembly) and the speed sensors.

B004PZRE15
DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1413 Front Speed Sensor RH Circuit Output

504

541

  • INF Code: 504


    • An open in the sensor signal of a malfunctioning wheel occurs 255 times or more.

  • INF Code: 541


    • Either of the following is detected:


      1. 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.

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

  • Front speed sensor RH

  • Speed sensor installed improperly

  • Wire harness or connector

  • Front speed sensor rotor RH (front axle hub sub-assembly RH)

  • Skid control ECU (brake booster with master cylinder assembly)

 ABS DTC
C1414 Front Speed Sensor LH Circuit Output

514

542

  • INF Code: 514


    • An open in the sensor signal of a malfunctioning wheel occurs 255 times or more.

  • INF Code: 542


    • Either of the following is detected:


      1. 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.

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

  • Front speed sensor LH

  • Speed sensor installed improperly

  • Wire harness or connector

  • Front speed sensor rotor LH (front axle hub sub-assembly LH)

  • Skid control ECU (brake booster with master cylinder assembly)

 ABS DTC
DTC Detection Conditions: C1413 INF Code: 541
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition At a vehicle speed of 20 km/h (12 mph) or more. ○ -
At a vehicle speed of 10 km/h (6 mph) or more. - ○
Malfunction Status Noise occurs in the sensor signals of a malfunctioning wheel. ○ -
Noise occurs once per rotor rotation. - ○
Detection Time Detected 75 times or more within 5 seconds 15 seconds or more
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1414 INF Code: 542
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition At a vehicle speed of 20 km/h (12 mph) or more. ○ -
At a vehicle speed of 10 km/h (6 mph) or more. - ○
Malfunction Status Noise occurs in the sensor signals of a malfunctioning wheel. ○ -
Noise occurs once per rotor rotation. - ○
Detection Time Detected 75 times or more within 5 seconds 15 seconds or more
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

B004P7IE02

CAUTION / NOTICE / HINT

Note

After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.


      Chassis > ABS/VSC/TRC > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK DTC


    1. Turn the power switch off.

    2. Turn the power switch on (IG).

    3. Check if the same DTC is output.


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      C1413 is output A
      C1414 is output B

    B

    READ VALUE USING GTS (MOMENTARY INTERRUPTION) Click here

    A

  3. READ VALUE USING GTS (MOMENTARY INTERRUPTION)


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


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Speed Sensor Voltage Open Front speed sensor RH voltage open detection Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      FR Speed Sensor Voltage Open

    2. Check for any momentary interruptions in the wire harness and connectors.

      Note

      Perform the above inspection before removing the sensor and connector.

      Result
      Result Proceed to
      The value of FR Speed Sensor Voltage Open is always Normal A
      The value of FR Speed Sensor Voltage Open outputs Error one or more times B

    B

    CHECK FRONT SPEED SENSOR RH INSTALLATION Click here

    A

  4. READ VALUE USING GTS (FRONT SPEED SENSOR RH)


    1. Select the Data List on the GTS.


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Wheel Speed Front speed sensor RH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      FR Wheel Speed

    2. Check the front speed sensor RH output value.

      Result
      Result Proceed to
      The value of FR Wheel Speed changes in accordance with the vehicle speed A
      Other than above B

    B

    GO TO STEP 7 Click here

    A

  5. CLEAR DTC


    1. Clear the DTCs.


      Chassis > ABS/VSC/TRC > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  6. RECONFIRM DTC


    1. Turn the power switch off.

    2. Turn the power switch on (READY).

    3. Perform a road test.

    4. Check if the same DTC is output.


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      C1413 is not output A
      C1413 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for LHD: Click here
    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for RHD: Click here

  7. CHECK FRONT SPEED SENSOR RH INSTALLATION


    1. B004QBOC29
      *1 Front Speed Sensor RH
      *a OK
      *b NG
      *c 8.5 N*m
      *d No Clearance

      Turn the power switch off.

    2. Check the front speed sensor RH installation.

      OK
      There is no clearance between the sensor and the front steering knuckle.
      The installation bolt is tightened properly.
      Torque
      8.5 N*m (87 kgf*cm, 75 in.*lbf)
      Result
      Proceed to
      OK
      NG

    NG

    REINSTALL OR REPLACE FRONT SPEED SENSOR RH Click here

    OK

  8. CHECK FRONT SPEED SENSOR RH AND FRONT SPEED SENSOR ROTOR RH (CHECK FOR FOREIGN MATTER)


    1. Remove the front speed sensor RH and the component with the front speed sensor rotor RH.

      Tech Tips

      for Front Speed Sensor RH: Click here

      for Front Speed Sensor Rotor RH: Click here

    2. Check the front speed sensor tip RH and front speed sensor rotor RH.

      OK
      The front speed sensor tip RH and front speed sensor rotor RH are free of scratches, oil, and foreign matter.

      Note


      • If there is oil or foreign matter on the front speed sensor RH, clean the front speed sensor RH and then check the front speed sensor rotor RH.

      • If the front speed sensor RH is damaged, replace the front speed sensor RH with a new one.

      • Check the front speed sensor RH signal after cleaning or replacement.

        Click here

      Result
      Proceed to
      OK
      NG

    NG

    CLEAN OR REPLACE FRONT SPEED SENSOR RH AND FRONT SPEED SENSOR ROTOR RH

    OK

  9. CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - FRONT SPEED SENSOR RH)


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

      OK
      The connector is securely connected.

    2. Disconnect the A41 skid control ECU (brake booster with master cylinder assembly) connector.

    3. Disconnect the A31 front speed sensor RH connector.

    4. Check both the connector case and the terminals for deformation and corrosion.

      OK
      No deformation or corrosion.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A41-3 (FR+) - A31-1 (FR+) Always Below 1 Ω
      A41-3 (FR+) or A31-1 (FR+) - Body ground Always 10 kΩ or higher
      A41-4 (FR-) - A31-2 (FR-) Always Below 1 Ω
      A41-4 (FR-) or A31-2 (FR-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT)


    1. Reconnect the A41 skid control ECU (brake booster with master cylinder assembly) connector.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A31-1 (FR+) - Body ground Power switch on (IG) 8 to 14 V

      Note

      Check the front speed sensor RH signal after replacement.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT SPEED SENSOR RH Click here

    NG

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for LHD: Click here
    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for RHD: Click here

  11. READ VALUE USING GTS (MOMENTARY INTERRUPTION)


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


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FL Speed Sensor Voltage Open Front speed sensor LH voltage open detection Error or Normal

      Error: Momentary interruption

      Normal: Normal

      		 -

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      FL Speed Sensor Voltage Open

    2. Check for any momentary interruptions in the wire harness and connectors.

      Note

      Perform the above inspection before removing the sensor and connector.

      Result
      Result Proceed to
      The value of FL Speed Sensor Voltage Open is always Normal A
      The value of FL Speed Sensor Voltage Open outputs Error one or more times B

    B

    CHECK FRONT SPEED SENSOR LH INSTALLATION Click here

    A

  12. READ VALUE USING GTS (FRONT SPEED SENSOR LH)


    1. Select the Data List on the GTS.


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FL Wheel Speed Front speed sensor LH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      FL Wheel Speed

    2. Check the front speed sensor LH output value.

      Result
      Result Proceed to
      The value of FL Wheel Speed changes in accordance with the vehicle speed A
      Other than above B

    B

    GO TO STEP 15 Click here

    A

  13. CLEAR DTC


    1. Clear the DTCs.


      Chassis > ABS/VSC/TRC > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  14. RECONFIRM DTC


    1. Turn the power switch off.

    2. Turn the power switch on (READY).

    3. Perform a road test.

    4. Check if the same DTC is output.


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      C1414 is not output A
      C1414 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for LHD: Click here
    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for RHD: Click here

  15. CHECK FRONT SPEED SENSOR LH INSTALLATION


    1. B004QBOC29
      *1 Front Speed Sensor LH
      *a OK
      *b NG
      *c 8.5 N*m
      *d No Clearance

      Turn the power switch off.

    2. Check the front speed sensor LH installation.

      OK
      There is no clearance between the sensor and the front steering knuckle.
      The installation bolt is tightened properly.
      Torque
      8.5 N*m (87 kgf*cm, 75 in.*lbf)
      Result
      Proceed to
      OK
      NG

    NG

    REINSTALL OR REPLACE FRONT SPEED SENSOR LH Click here

    OK

  16. CHECK FRONT SPEED SENSOR LH AND FRONT SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER)


    1. Remove the front speed sensor LH and the component with the front speed sensor rotor LH.

      Tech Tips

      for Front Speed Sensor LH: Click here

      for Front Speed Sensor Rotor LH: Click here

    2. Check the front speed sensor tip LH and front speed sensor rotor LH.

      OK
      The front speed sensor tip LH and front speed sensor rotor LH are free of scratches, oil, and foreign matter.

      Note


      • If there is oil or foreign matter on the front speed sensor LH, clean the front speed sensor LH and then check the front speed sensor rotor LH.

      • If the front speed sensor LH is damaged, replace the front speed sensor LH with a new one.

      • Check the front speed sensor LH signal after cleaning or replacement.

        Click here

      Result
      Proceed to
      OK
      NG

    NG

    CLEAN OR REPLACE FRONT SPEED SENSOR LH AND FRONT SPEED SENSOR ROTOR LH

    OK

  17. CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - FRONT SPEED SENSOR LH)


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

      OK
      The connector is securely connected.

    2. Disconnect the A41 skid control ECU (brake booster with master cylinder assembly) connector.

    3. Disconnect the A15 front speed sensor LH connector.

    4. Check both the connector case and the terminals for deformation and corrosion.

      OK
      No deformation or corrosion.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A41-31 (FL+) - A15-1 (FL+) Always Below 1 Ω
      A41-31 (FL+) or A15-1 (FL+) - Body ground Always 10 kΩ or higher
      A41-32 (FL-) - A15-2 (FL-) Always Below 1 Ω
      A41-32 (FL-) or A15-2 (FL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  18. INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT)


    1. Reconnect the A41 skid control ECU (brake booster with master cylinder assembly) connector.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A15-1 (FL+) - Body ground Power switch on (IG) 8 to 14 V

      Note

      Check the front speed sensor LH signal after replacement.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT SPEED SENSOR LH Click here

    NG

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for LHD: Click here
    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for RHD: Click here