VSC sistem Diagnostic trouble code C0210 C0215 C1238 C1239

DTC C0210/33 Rear Speed Sensor RH Circuit

DTC C0215/34 Rear Speed Sensor LH Circuit

DTC C1238/38 Foreign Object is Attached on Tip of Rear Speed Sensor RH

DTC C1239/39 Foreign Object is Attached on Tip of Rear Speed Sensor LH

Description

Wiring diagram

Inspection procedure

Read value using intelligent tester (rr/rl speed open)

Read value using intelligent tester (rr/rl wheel speed, rr/rl wheel direction)

Perform signal check

Inspect rear speed sensor installation

Inspect speed sensor tip

Inspect rear speed sensor

Inspect skid control sensor wire

Check harness and connector (skid control ecu - skid control sensor wire)

Inspect master cylinder solenoid (skid control ecu output voltage)

Reconfirm dtc

Replace rear speed sensor

Reconfirm dtc

Inspect speed sensor rotor

Description

The speed sensor detects wheel speed and sends the appropriate signals to the ECU. These signals are used to control the Multi-terrain ABS, EBD, BA, VSC, A-TRC, CRAWL and hill-start assist control systems. This speed sensor contains a sensor IC, which consists of 2 MREs (Magnetic Resistance Element). The speed sensor rotor, which consists of 48 sets of N and S poles that are arranged in a circle, is integrated with the inner race of the hub bearing. To detect the rotation direction, the output waves are used to determine the relationship of the pulses that are generated by 2 MREs. Upon receiving this signal, the sensor IC outputs a forward or backward wave to the skid control ECU.

Land Cruiser. Diagnostic trouble code C0210 C0215 C1238 C1239 Description
DTC Code DTC Detection Condition Trouble Area
C0210/33 C0215/34 When any of the following conditions is detected: 1. At a vehicle speed of 10 km/h (6 mph) or more, the pulses are not input for 1 second. 2. A momentary interruption of the speed sensor signal occurs at least 255 times when switching the ignition switch ON and off. 3. Continuous noise occurs in the speed sensor signals at a vehicle speed of 20 km/h (12 mph) or more. 4. The speed sensor signal circuit is open for 0.12 seconds or more.
  1. Rear speed sensor RH
  2. Rear speed sensor LH
  3. Harness or connector
  4. Speed sensor rotor
  5. Sensor installation
  6. Master cylinder solenoid (Skid control ECU)
C1238/38 C1239/39 Noise in the speed sensor signals occurs 75 times or more for 5 seconds when the vehicle speed is 20 km/h (12 mph) or more.
  1. Rear speed sensor RH
  2. Rear speed sensor LH
  3. Speed sensor rotor
  4. Sensor installation
  5. Master cylinder solenoid (Skid control ECU)

HINT:

  1. DTC C0210/33 and C1238/38 are for the rear speed sensor RH.
  2. DTC C0215/34 and C1239/39 are for the rear speed sensor LH.

Wiring diagram

Land Cruiser. Diagnostic trouble code C0210 C0215 C1238 C1239 Wiring diagram

Inspection procedure

NOTICE:

When replacing the master cylinder solenoid, perform zero point calibration .

1.READ VALUE USING INTELLIGENT TESTER (RR/RL SPEED OPEN)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the intelligent tester on.

  1. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

ABS/VSC/TRC
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
RR Speed Open Rear speed sensor RH open detection / Error or Normal Error: Momentary interruption Normal: Normal -
RL Speed Open Rear speed sensor LH open detection / Error or Normal Error: Momentary interruption Normal: Normal -

  1. Check for any momentary interruption in the wire harness and connector corresponding to the DTC .

    OK:

    There are no momentary interruptions.

    HINT:

    Perform the above inspection before removing the sensor and connector.

  NG  
REPAIR OR REPLACE HARNESS OR CONNECTOR
 
OK  
   

2.READ VALUE USING INTELLIGENT TESTER (RR/RL WHEEL SPEED, RR/RL WHEEL DIRECTION)

  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.

    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) Actual wheel speed A similar speed is indicated on the speedometer.
    RL Wheel Speed Rear wheel speed sensor LH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Actual wheel speed A similar speed is indicated on the speedometer.

    OK:

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

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

    ABS/VSC/TRC
    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    RR Wheel Direction Rear wheel direction RH / Forward or Back Forward: Forward Back: Backward -
    RL Wheel Direction Rear wheel direction LH / Forward or Back Forward: Forward Back: Backward -

    OK:

    The wheel direction is displayed correctly.

  NG  
Go to step 4
 
OK  
   

3.PERFORM SIGNAL CHECK

  1. Check if test mode (signal check) DTCs are output.

    HINT:

    Enter the following menus: Chassis / ABS/VSC/TRC / Utility / Signal Check.

    Result
    Result Proceed to
    Test mode (signal check) DTC is output A
    Test mode (signal check) DTC is not output B
  B  
Go to step 10
 
A  
   

4.INSPECT REAR SPEED SENSOR INSTALLATION

  1. Check the speed sensor installation .

    OK:

    The installation nut is tightened properly.

    There is no clearance between the sensor and rear axle.

    NOTICE:

    Check the speed sensor signal after replacement .

  NG  
INSTALL REAR SPEED SENSOR CORRECTLY
 
OK  
   

5.INSPECT SPEED SENSOR TIP

  1. Remove the rear speed sensor .

  1. Check the sensor tip.

    OK:

    No scratches or foreign matter on the sensor tip.

    NOTICE:

    Check the speed sensor signal after cleaning/replacement .

  NG  
CLEAN OR REPLACE REAR SPEED SENSOR
 
OK  
   

6.INSPECT REAR SPEED SENSOR

Land Cruiser. Diagnostic trouble code C0210 C0215 C1238 C1239 Install the rear speed sensor.

  1. Install the rear speed sensor.

  1. Disconnect the z19 and/or z20 rear speed sensor connector.

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

    Standard Resistance:

    for RH:

    Tester Connection Switch Condition Specified Condition
    z19-2 (RR+) - Body ground Ignition switch off 10 k? or higher
    z19-1 (RR-) - Body ground Ignition switch off 10 k? or higher

    for LH:

    Tester Connection Switch Condition Specified Condition
    z20-2 (RL+) - Body ground Ignition switch off 10 k? or higher
    z20-1 (RL-) - Body ground Ignition switch off 10 k? or higher
    Text in Illustration
    *1 Component without harness connected (Rear Speed Sensor)
    *a for RH
    *b for LH
  NG  
REPLACE REAR SPEED SENSOR
 
OK  
   

7.INSPECT SKID CONTROL SENSOR WIRE

Land Cruiser. Diagnostic trouble code C0210 C0215 C1238 C1239 Disconnect the z19/z20 and Nz1 skid control sensor wire connectors.

  1. Disconnect the z19/z20 and Nz1 skid control sensor wire connectors.

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

    Standard Resistance:

    for RH:

    Tester Connection Condition Specified Condition
    z19-2 (RR+) - Nz1-4 Always Below 1 ?
    z19-2 (RR+) - Nz1-3 Always 10 k? or higher
    z19-2 (RR+) - Body ground Always 10 k? or higher
    z19-1 (RR-) - Nz1-3 Always Below 1 ?
    z19-1 (RR-) - Nz1-4 Always 10 k? or higher
    z19-1 (RR-) - Body ground Always 10 k? or higher

    for LH:

    Tester Connection Condition Specified Condition
    z20-2 (RL+) - Nz1-2 Always Below 1 ?
    z20-2 (RL+) - Nz1-1 Always 10 k? or higher
    z20-2 (RL+) - Body ground Always 10 k? or higher
    z20-1 (RL-) - Nz1-1 Always Below 1 ?
    z20-1 (RL-) - Nz1-2 Always 10 k? or higher
    z20-1 (RL-) - Body ground Always 10 k? or higher
    Text in Illustration
    *1 Component without harness connected (Skid Control Sensor Wire)
    *a Sensor Side Connector
    *b Vehicle Side Connector
    *c for RH
    *d for LH

    NOTICE:

    Check the speed sensor signal after replacement .

  NG  
REPLACE SKID CONTROL SENSOR WIRE
 
OK  
   

8.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SKID CONTROL SENSOR WIRE)

  1. Disconnect the A24 skid control ECU connector and Nz1 skid control sensor wire connector.

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

    Standard Resistance:

    for RH:

    Tester Connection Condition Specified Condition
    A24-5 (RR+) - Nz1-4 Always Below 1 ?
    A24-5 (RR+) - Body ground Always 10 k? or higher
    A24-19 (RR-) - Nz1-3 Always Below 1 ?
    A24-19 (RR-) - Body ground Always 10 k? or higher

    for LH:

    Tester Connection Condition Specified Condition
    A24-20 (RL+) - Nz1-2 Always Below 1 ?
    A24-20 (RL+) - Body ground Always 10 k? or higher
    A24-6 (RL-) - Nz1-1 Always Below 1 ?
    A24-6 (RL-) - Body ground Always 10 k? or higher
  NG  
REPAIR OR REPLACE HARNESS OR CONNECTOR
 
OK  
   

9.INSPECT MASTER CYLINDER SOLENOID (SKID CONTROL ECU OUTPUT VOLTAGE)

Land Cruiser. Diagnostic trouble code C0210 C0215 C1238 C1239 Reconnect the A24 skid control ECU connector.

  1. Reconnect the A24 skid control ECU connector.

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

    Standard Voltage:

    for RH:

    Tester Connection Switch Condition Specified Condition
    Nz1-4 - Body ground Ignition switch ON 7.5 to 12 V

    for LH:

    Tester Connection Switch Condition Specified Condition
    Nz1-2 - Body ground Ignition switch ON 7.5 to 12 V
    Text in Illustration
    *1 Front view of wire harness connector (to Skid Control Sensor Wire)
    Result
    Result Proceed to
    OK A
    NG for LHD B
    for RHD C
  B  
REPLACE MASTER CYLINDER SOLENOID
 
  C  
REPLACE MASTER CYLINDER SOLENOID
 
A  
   

10.RECONFIRM DTC

  1. Clear the DTCs .

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

  1. Check if the same DTCs are output .

    HINT:

    Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.

    Result
    Result Proceed to
    DTC is output A
    DTC is not output (When troubleshooting in accordance with the Diagnostic Trouble Code Chart) B
    DTC is not output (When troubleshooting in accordance with the Problem Symptoms Table) C
  B  
USE SIMULATION METHOD TO CHECK
 
  C  
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
 
A  
   

11.REPLACE REAR SPEED SENSOR

  1. Replace the rear speed sensor .

    NOTICE:

    Check the speed sensor signal after replacement .

NEXT  
   

12.RECONFIRM DTC

  1. Clear the DTCs .

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

  1. Check if the same DTCs are output .

    HINT:

    Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.

    Result
    Result Proceed to
    DTC is output A
    DTC is not output B
  B  
END
 
A  
   

13.INSPECT SPEED SENSOR ROTOR

  1. Remove the rear axle hub and bearing assembly .

  1. Check the sensor rotor.

    OK:

    No scratches, oil, or foreign matter on the rotors.

    NOTICE:

    Check the speed sensor signal after cleaning/replacement .

    Result
    Result Proceed to
    NG A
    OK for LHD B
    for RHD C
  B  
REPLACE MASTER CYLINDER SOLENOID
 
  C  
REPLACE MASTER CYLINDER SOLENOID
 
A  
   
CLEAN OR REPLACE REAR AXLE HUB AND BEARING ASSEMBLY (SPEED SENSOR ROTOR)