Vehicle Stability Control System (w/o VDIM)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (w/o VDIM): C0200/31: Front Speed Sensor RH Circuit

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)

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. 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 ECU.
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.

HINT:
- DTC C0200/31 is for the front speed sensor RH.
- DTC C0205/32 is for the front speed sensor LH.

WIRING DIAGRAM

INSPECTION PROCEDURE
NOTE: When replacing the brake actuator assembly, perform zero point calibration Vehicle Stability Control System (W/O VDIM).

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)
(a) Using Techstream, check for any momentary interruption in the wire harness and connector corresponding to a DTC Check For Intermittent Problems.

ABS / VSC / TRAC:

Result:

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

C -- CHECK FRONT SPEED SENSOR INSTALLATION
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR (SKID CONTROL ECU - FRONT SPEED SENSOR)
A -- Continue to next step.
2. READ VALUE USING TECHSTREAM (FRONT SPEED SENSOR)
(a) Connect Techstream to the DLC3.
(b) Start the engine.
(c) Select the Data List mode on Techstream.

ABS / VSC / TRAC:

(d) Check that there is no difference between the speed value output from the speed sensor displayed on Techstream and the speed value displayed on the speedometer when driving the vehicle.
OK:
The speed value output from the speed sensor displayed on Techstream is the same as the actual vehicle speed.

ABS / VSC / TRAC:

(e) Check that the sensor signal conforms to the wheel direction.
OK:
The wheel direction is displayed.
NG -- CHECK FRONT SPEED SENSOR INSTALLATION
OK -- Continue to next step.
3. PERFORM TEST MODE (SIGNAL CHECK)
(a) Perform sensor signal check in Test Mode Procedure Test Mode Procedure.
OK:
All Test Mode DTCs are erased.
NG -- CHECK FRONT SPEED SENSOR INSTALLATION
OK -- Continue to next step.
4. RECONFIRM DTC
(a) Clear the DTC Vehicle Stability Control System (w/o VDIM).
(b) Start the engine.
(c) Drive the vehicle at the speed of 20 mph (32 km/h) or more for at least 60 seconds.
(d) Check if the same DTC is recorded Vehicle Stability Control System (w/o VDIM).
Result:

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

B -- REPLACE FRONT SPEED SENSOR
A -- USE SIMULATION METHOD TO CHECK
5. CHECK FRONT SPEED SENSOR INSTALLATION

(a) Turn the engine switch off.
(b) Check the speed sensor installation.
OK (2WD):
There is no clearance between the sensor and the front steering knuckle.
OK (4WD):
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:

NOTE: Check the speed sensor signal after the replacement Test Mode Procedure.

C -- INSTALL FRONT SPEED SENSOR CORRECTLY
B -- CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)
A -- Continue to next step.
6. CHECK FRONT SPEED SENSOR TIP
(a) Remove the front speed sensor Removal.
(b) Check the speed sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NOTE: Check the speed sensor signal after the cleaning/replacement Test Mode Procedure.

NG -- CLEAN OR REPLACE FRONT SPEED SENSOR
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)

(a) Install the front speed sensor.
(b) Disconnect the skid control sensor wire.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
RH

NOTE: Check the speed sensor signal after replacement Test Mode Procedure.

NG -- REPLACE SKID CONTROL SENSOR WIRE
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - FRONT SPEED SENSOR)

(a) Reconnect the skid control sensor wire.
(b) Disconnect the skid control ECU connector and the front speed sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
RH

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. INSPECT SKID CONTROL ECU (SENSOR INPUT)

(a) Reconnect the skid control ECU connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
RH

NG -- REPLACE BRAKE ACTUATOR ASSEMBLY
OK -- Continue to next step.
10. RECONFIRM DTC
(a) Turn the engine switch off.
(b) Reconnect the front speed sensor connector.
(c) Clear the DTC Vehicle Stability Control System (w/o VDIM).
(d) Start the engine.
(e) Drive the vehicle at the speed of 20 mph (32 km/h) or more for at least 60 seconds.
(f) Check if the same DTC is recorded Vehicle Stability Control System (w/o VDIM).
Result:

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

B -- USE SIMULATION METHOD TO CHECK
A -- Continue to next step.
11. REPLACE FRONT SPEED SENSOR
(a) Turn the engine switch off.
(b) Replace the front speed sensor Removal for 2WD, or Removal for 4WD).
NOTE: Check the speed sensor signal after replacement Test Mode Procedure.

NEXT -- Continue to next step.
12. RECONFIRM DTC
(a) Clear the DTC Vehicle Stability Control System (w/o VDIM).
(b) Start the engine.
(c) Drive the vehicle at the speed of 20 mph (32 km/h) or more for at least 60 seconds.
(d) Check if the same DTC is recorded Vehicle Stability Control System (w/o VDIM).
Result:

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

B -- END
A -- REPLACE BRAKE ACTUATOR ASSEMBLY
13. REPAIR OR REPLACE HARNESS OR CONNECTOR (SKID CONTROL ECU - FRONT SPEED SENSOR)
(a) Turn the engine switch off.
(b) Repair or replace the harness or connector.
(c) Check for any momentary interruption between the skid control ECU and front speed sensor Check For Intermittent Problems.
(d) Check that there is no momentary interruption.
NEXT -- Continue to next step.
14. RECONFIRM DTC
(a) Clear the DTC Vehicle Stability Control System (w/o VDIM).
(b) Start the engine.
(c) Drive the vehicle at the speed of 20 mph (32 km/h) or more for at least 60 seconds.
(d) Check if the same DTC is recorded Vehicle Stability Control System (w/o VDIM).
Result:

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

B -- READ VALUE USING TECHSTREAM (FRONT SPEED SENSOR)
A -- END