C0210
BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C0210/33: Rear Speed Sensor RH Circuit
DTC C0210/33 - Rear Speed Sensor RH Circuit
DTC C0215/34 - Rear Speed Sensor LH Circuit
DTC C1273/73 - Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)
DTC C1274/74 - Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)
DESCRIPTION
The speed sensor detects wheel speed and sends the appropriate signals to the ECU. These signals are used to control the brake 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 signals from the speed sensor are used to determine the relationship of the pulses that are generated by the 2 MREs. Upon receiving the speed sensor signal, the sensor IC outputs a forward or backward signal to the ECU.
DTCs C1273/73 and C1274/74 are cleared when the speed sensor sends a vehicle speed signal or test mode ends. DTCs C1273/73 and C1274/74 are output only in test mode.
HINT:
- DTC C0210/33 is for the rear speed sensor RH.
- DTC C0215/34 is for the rear speed sensor LH.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTE:
When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration Programming and Relearning.
HINT: Start the inspection from "CHECK HARNESS AND CONNECTOR" when using the Techstream and start from "PERFORM TEST MODE" when not using the Techstream.
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)
(a) Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to a DTC Check For Intermittent Problems.
ABS/VSC/TRAC
OK:
There are no momentary interruptions.
HINT: Perform the above inspection before removing the sensor and connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (SPEED SENSOR CIRCUIT)
OK -- Continue to next step.
2. READ VALUE USING TECHSTREAM (REAR SPEED SENSOR)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Select the Data List mode on the Techstream.
ABS/VSC/TRAC
(d) Check that the speed value output from the speed sensor displayed on the Techstream and the speed value displayed on the speedometer are almost the same when driving the vehicle.
OK:
The speed value output from the speed sensor displayed on the 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 -- INSPECT REAR SPEED SENSOR INSTALLATION
OK -- Continue to next step.
3. PERFORM TEST MODE (SIGNAL CHECK)
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Perform sensor signal check in "TEST MODE PROCEDURE" Test Mode Procedure.
OK:
All Test Mode DTCs are erased.
NG -- INSPECT REAR SPEED SENSOR INSTALLATION
OK -- Continue to next step.
4. RECONFIRM DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Start the engine.
(c) Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more.
(d) Check if the same DTCs are recorded Reading and Clearing Diagnostic Trouble Codes.
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 REAR SPEED SENSOR
A -- END
5. INSPECT REAR SPEED SENSOR INSTALLATION
(a) Check the sensor installation.
OK:
There is no clearance between the sensor and the rear axle carrier.
The installation bolt is tightened properly.
Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf)
NOTE:
Check the speed sensor signal after replacement Test Mode Procedure.
NG -- SECURELY REINSTALL REAR SPEED SENSOR
OK -- Continue to next step.
6. INSPECT REAR SPEED SENSOR TIP
(a) Remove the rear speed sensor.
(b) Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NOTE:
Check the speed sensor signal after cleaning/replacement Test Mode Procedure.
NG -- CLEAN OR REPLACE REAR SPEED SENSOR
OK -- Continue to next step.
7. CHECK REAR SPEED SENSOR WIRE
(a) Disconnect the rear speed sensor wire.
(b) Disconnect the rear speed sensor wire.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for RH
for LH
NOTE:
Check the speed sensor signal after replacement Test Mode Procedure.
NG -- REPLACE REAR SPEED SENSOR WIRE
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR SPEED SENSOR)
(a) Disconnect the A19 and A21 ECU connectors.
(b) Disconnect the R56 sensor connector.
(c) Disconnect the S65 sensor connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for RH
for LH
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. CHECK SKID CONTROL ECU (SENSOR INPUT VOLTAGE)
(a) Reconnect the A19 and A21 ECU connectors.
(b) Disconnect the R56 sensor connector.
(c) Disconnect the S65 sensor connector.
(d) Turn the engine switch on (IG).
(e) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPLACE SKID CONTROL ECU
OK -- Continue to next step.
10. RECONFIRM DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Start the engine.
(c) Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more.
(d) Check if the same DTCs are recorded Reading and Clearing Diagnostic Trouble Codes.
HINT: Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.
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 -- Continue to next step.
11. REPLACE REAR SPEED SENSOR
(a) Replace the rear speed sensor Removal.
NOTE:
Check the speed sensor signal after replacement Test Mode Procedure.
NEXT -- Continue to next step.
12. RECONFIRM DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Start the engine.
(c) Drive the vehicle at the speed of 32 km/h (20 mph) or more for 60 seconds or more.
(d) Check if the same DTCs are recorded Reading and Clearing Diagnostic Trouble Codes.
HINT: Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.
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 -- Continue to next step.
13. INSPECT SPEED SENSOR ROTOR
(a) Remove the speed sensor rotor.
(b) Check the sensor rotor.
OK:
No scratches, oil, or foreign matter on the rotors.
NOTE:
Check the speed sensor signal after cleaning/replacement Test Mode Procedure.
NG -- CLEAN OR REPLACE SPEED SENSOR ROTOR
OK -- REPLACE SKID CONTROL ECU