DTC    C0200/31    Front Speed Sensor RH Circuit

DTC    C0205/32    Front Speed Sensor LH Circuit

DTC    C1271/71    Low Output Signal of Front Speed Sensor RH (Test Mode DTC)

DTC    C1272/72    Low Output Signal of Front Speed Sensor LH (Test Mode DTC)

for Preparation Click here


DESCRIPTION

The speed sensor detects wheel speed and sends the appropriate signals to the skid control ECU. These signals are used for the ABS control system. The speed sensor detects changes in the magnetic field generated by the magnetic rotor which has the north and south poles evenly located in circumferential direction and generates the vehicle speed pulse. The skid control ECU detects each wheel speed based on the vehicle speed pulse.
DTCs C1271/71 and C1272/72 can be deleted when the speed sensor sends a vehicle speed signal or the Test Mode ends. DTCs C1271/71 and C1272/72 are output only in the Test Mode.
C110679E01

DTC No.
DTC Detecting Condition
Trouble Area
C0200/31
C0205/32
When any of the following is detected:
  1. At a vehicle speed of 6 mph (10 km/h) or more, an open or short in the sensor signal circuit continues for 1 second or more.
  2. Momentary interruption of the sensor signal from the abnormal wheel occurs 255 times or more.
  3. An open in the speed sensor signal circuit continues for 0.5 seconds or more.
  4. When the vehicle is driven in reverse at the speed of 1.8 mph (3 km/h) or more and 3 of the wheel sensors detect the reverse signal, the other sensor detects high frequency pulse 75 times while the engine switch is on (IG).
  5. At a vehicle speed of 6 mph (10 km/h) or more, the vehicle speed sensor output halves for 5 seconds.
  6. At a vehicle speed of 6 mph (10 km/h) or more, the direction of wheel rotation changes 7 times in 0.006 seconds while the engine switch is on (IG).
  7. At a vehicle speed of 18 mph (30 km/h) or more, one wheel direction is different from the other 3 wheels' for 1 second.
  8. At a vehicle speed of 60 mph (100 km/h), a reverse signal is output for 1 second or more.
  9. At a vehicle speed of 18 mph (30 km/h) or more, the rotation direction of the one of the wheels is not detected normally and the rotation direction of the other 3 wheels is not the same for 1 second.
  10. With the IG1 terminal voltage 9.5 V or more, the sensor power supply voltage decreases for 0.5 seconds or more.
  1. Right front and left front speed sensor
  2. Each speed sensor circuit
  3. Sensor rotor
  4. Sensor installation
  5. ABS and TRACTION actuator assembly (Skid control ECU)

HINT:
  1. DTC C0200/31 is for the right front speed sensor.
  2. DTC C0205/32 is for the left front speed sensor.


WIRING DIAGRAM


C109385E01


INSPECTION PROCEDURE

NOTICE:
When replacing the ABS and TRACTION actuator assembly, perform zero point calibration (Click here).

HINT:
Start the inspection from step 1 when using the intelligent tester and from step 3 when not using the intelligent tester.

1.CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)

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

    DATA LIST: ABS/VSC/TR(A)C 
    Item (Display)
    		Measurement Item / Range (Display)
    		Normal Condition
    FR Speed Open
    		FR speed sensor open detection / ERROR or NORMAL
    		ERROR: Momentary interruption
    NORMAL: Normal
    FL Speed Open
    		FL speed sensor open detection / ERROR or NORMAL
    		ERROR: Momentary interruption
    NORMAL: Normal

    OK:
    There are no momentary interruptions.

    HINT:
    Perform the above inspection before removing the sensor and connector.



NG
CHECK AND REPAIR HARNESS AND CONNECTOR (SPEED SENSOR CIRCUIT)
OK


2.READ VALUE OF INTELLIGENT TESTER (FRONT SPEED SENSOR)

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine.

  1. Select the DATA LIST mode on the intelligent tester.

    DATA LIST: ABS/VSC/TR(A)C 
    Item (Display)
    		Measurement Item / Range (Display)
    		Normal Condition
    FR Wheel Speed
    		Wheel speed sensor (FR) reading / min.: 0 mph (0 km/h, max.: 202 mph (326 km/h))
    		Actual wheel speed
    FL Wheel Speed
    		Wheel speed sensor (FL) reading /min.: 0 mph (0 km/h, max.: 202 mph (326 km/h))
    		Actual wheel speed

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

    OK:
    The speed value output from the speed sensor displayed on the intelligent tester is the same as the actual vehicle speed.


    DATA LIST: ABS/VSC/TR(A)C 
    Item (Display)
    		Measurement Item / Range (Display)
    		Normal Condition
    FR Wheel Direction
    		Wheel direction (FR) / FORWARD or BACK
    		FORWARD: Forward
    BACK: Back
    FL Wheel Direction
    		Wheel direction (FL) / FORWARD or BACK
    		FORWARD: Forward
    BACK: Back

  1. Check that the sensor signal conforms to the wheel direction.

    OK:
    The wheel direction is displayed.



NG
Go to step 5
OK


3.PERFORM TEST MODE (SIGNAL CHECK)

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

    OK:
    All Test Mode DTCs are erased.



NG
Go to step 5
OK


4.RECONFIRM DTC

  1. Clear the DTC (Click here).

  1. Start the engine.

  1. Drive the vehicle at the speed of 32 mph (20 km/h ) or more for at least 60 seconds.

  1. Check that the same DTC is recorded (Click here).

    Result:

    Condition
    		Proceed To
    DTCs (C0200/31 and C0205/32) are not output
    		A
    DTCs (C0200/31 and C0205/32) are output
    		B

    HINT:
    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
Go to step 11
A

END 

5.INSPECT FRONT SPEED SENSOR INSTALLATION


    C112733E01

  1. Check the speed sensor installation.

    OK:
    There is no clearance between the sensor and the front steering knuckle.

    NOTICE:
    Check the speed sensor signal after the replacement (Click here).



NG
CHECK AND REPLACE FRONT SPEED SENSOR
OK


6.INSPECT SPEED SENSOR TIP

  1. Remove the front speed sensor (Click here).

  1. Check the sensor tip.

    OK:
    No scratches or foreign matter on the sensor tip.

    NOTICE:
    Check the speed sensor signal after the cleaning/replacement (Click here).



NG
CLEAN OR REPLACE SPEED SENSOR
OK


7.CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)


    C107603E04

  1. Disconnect the skid control sensor wire.

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

    Resistance:
    RH:
    Tester Connection
    		Specified Condition
    n1 ("A"-2) - n1 ("B"-1)
    		Below 1 Ω
    n1 ("A"-2) - n1 ("B"-2)
    		10 kΩ or higher
    n1 ("A"-2) - Body ground
    		10 kΩ or higher
    n1 ("A"-1) - n1 ("B"-2)
    		Below 1 Ω
    n1 ("A"-1) - n1 ("B"-1)
    		10 kΩ or higher
    n1 ("A"-1) - Body ground
    		10 kΩ or higher
    LH:
    Tester Connection
    		Specified Condition
    m1 ("A"-2) - m1 ("B"-1)
    		Below 1 Ω
    m1 ("A"-2) - m1 ("B"-2)
    		10 kΩ or higher
    m1 ("A"-2) - Body ground
    		10 kΩ or higher
    m1 ("A"-1) - m1 ("B"-2)
    		Below 1 Ω
    m1 ("A"-1) - m1 ("B"-1)
    		10 kΩ or higher
    m1 ("A"-1) - Body ground
    		10 kΩ or higher

    NOTICE:
    Check the speed sensor signal after replacement (Click here).



NG
REPLACE SKID CONTROL SENSOR WIRE
OK


8.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO FRONT SPEED SENSOR)


    F049552E04

  1. Disconnect the skid control ECU connector and the front speed sensor connector.

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

    Resistance:
    RH:
    Tester Connection
    		Specified Condition
    A48-3 (FR+) - n1-2 (FR+)
    		Below 1 Ω
    A48-17 (FR-) - n1-1 (FR-)
    		Below 1 Ω
    LH:
    Tester Connection
    		Specified Condition
    A48-18 (FL+) - m1-2 (FL+)
    		Below 1 Ω
    A48-4 (FL-) - m1-1 (FL-)
    		Below 1 Ω

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

    Resistance:
    RH:
    Tester Connection
    		Specified Condition
    A48-3 (FR+) - Body ground
    		10 kΩ or higher
    A48-17 (FR-) - Body ground
    		10 kΩ or higher
    LH:
    Tester Connection
    		Specified Condition
    A48-18 (FL+) - Body ground
    		10 kΩ or higher
    A48-4 (FL-) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (SPEED SENSOR CIRCUIT)
OK


9.INSPECT FRONT SPEED SENSOR (INPUT VOLTAGE)


    C110680E05

  1. Disconnect the speed sensor connector.

  1. Turn the engine switch on (IG).

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

    Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    n1-2 (FR+) - Body ground
    		Engine switch on (IG)
    		7.5 to 12 V
    m1-2 (FL+) - Body ground
    		Engine switch on (IG)
    		7.5 to 12 V



NG
REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY
OK


10.RECONFIRM DTC

  1. Clear the DTC (Click here).

  1. Start the engine.

  1. Drive the vehicle at the speed of 20 mph (32 km/h) or more for at least 60 seconds.

  1. Check that the same DTC is recorded (Click here).

    HINT:
    Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.


    Result:

    Condition
    		Proceed To
    DTCs (C0200/31 and C0205/32) are not output
    		A
    DTCs (C0200/31 and C0205/32) are output
    		B

    HINT:
    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
Go to step 11
A

END 

11.REPLACE FRONT SPEED SENSOR

  1. Replace the front speed sensor (Click here).

    NOTICE:
    Check the speed sensor signal after replacement (Click here).


NEXT


12.RECONFIRM DTC

  1. Clear the DTC (Click here).

  1. Start the engine.

  1. Drive the vehicle at the speed of 20 mph (32 km/h) or more for at least 60 seconds.

  1. Check that the same DTC is recorded (Click here).

    HINT:
    Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.


    Result:

    Condition
    		Proceed To
    DTCs (C0200/31 and C0205/32) are not output
    		A
    DTCs (C0200/31 and C0205/32) are output
    		B

    HINT:
    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 ABS AND TRACTION ACTUATOR ASSEMBLY
A

END