C0215 Rear Speed Sensor LH Circuit

C0215 Rear Speed Sensor LH Circuit

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Diag Code: 34

CIRCUIT EXPLANATION The speed sensors detect wheel speed and transmit the signals to the ECU. These signals are used for control of the ABS control system. Each of the front and rear rotors has 48 serrations. When the rotors rotate, the magnetic field generated by the permanent magnet in the speed sensor induces an AC voltage. Since the frequency of this AC voltage changes in direct proportion to the speed of the rotor, the frequency is used by the ECU to detect the speed of each wheel. DTCs C1273 and C1274 can be deleted when the speed sensor sends a wheel speed signal or the Test Mode ends. DTCs C1273 and C1274 are output only in the Test Mode.

DTC Code	Diag Code	DTC Detection Condition	Trouble Area
C0210 C0215	33 34	When any of the following is detected: At a vehicle speed of 10 km/h (6 mph) or more, an open or short in the sensor signal circuit continues for 15 seconds or more. Momentary interruption of the sensor signal from the abnormal wheel occurs 7 times or more. An open in the speed sensor signal circuit continues for 0.5 seconds or more.	• Rear speed sensor RH/LH • Speed sensor circuit • Speed sensor rotor • Sensor installation • Skid control ECU
C1273 C1274	73 74	Detected only during Test Mode.	• Rear speed sensor RH/LH • Sensor installation • Speed sensor rotor

• DTCs C0210 and C1273 are for the rear speed sensor RH. • DTCs C0215 and C1274 are for the rear speed sensor LH.

WIRING DIAGRAM INSPECTION PROCEDURE

1.PERFORM TEST MODE (SIGNAL CHECK)

Detail

1. Perform sensor check in the Test Mode procedure (See page TEST MODE PROCEDURE). OK: All Test Mode DTCs are not output.

Go to step 3

[2] RECONFIRM DTC

2.RECONFIRM DTC

Detail

1. Turn the ignition switch off.
2. Clear the DTC (See Pub. No. S1-YXZE05A, page 05-108).
3. Start the engine.
4. Drive the vehicle at the speed of 20 km/h (12 mph) ormore for at least 30 seconds.
5. Check if the same DTC is recorded (See Pub. No. S1- YXZE05A, page 05-108). Result:

   Result	Proceed to
   DTCs (C0210 and/or C0215) are not output	A
   DTCs (C0210 and/or C0215) are output	B

   If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (See PROBLEM SYMPTOMS TABLE).

　

A CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (See DIAGNOSIS SYSTEM)

B Go to step 5

3.CHECK REAR SPEED SENSOR INSTALLATION

Detail

1. Turn the ignition switch off.
2. Check the speed sensor installation. OK: There is no clearance between the sensor and the rear axle carrier. The installation bolt is tightened properly. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)

　

INSTALL REAR SPEED SENSOR CORRECTLY

[4] CHECK REAR SPEEDSENSOR TIP

4.CHECK REAR SPEED SENSOR TIP

Detail

1. Remove the rear speed sensor (See Pub. No. S1- YXZE05A, SPEED SENSOR REAR LH).
2. Check the speed sensor tip. OK: No scratches or foreign matter on the sensor tip. Check the speed sensor signal after cleaning or replacement (See TEST MODE PROCEDURE).

　

CLEAN OR REPLACE REAR SPEED SENSOR

[5] INSPECT REAR SPEED SENSOR

5.INSPECT REAR SPEED SENSOR

Detail

1. Turn the ignition switch off.
2. Install the rear speed sensor.
3. Disconnect the rear speed sensor connector.
4. Measure the resistance according to the value (s) in the table below. Standard resistance: for RH

   Tester Connection	Condition	Specified Condition
   1 (RR+) - 2 (RR-)	Always	1.4 to 1.8 kΩ at 20ºC (68ºF)
   1 (RR+) - Body ground	Always	10 kΩ or higher
   2 (RR-) - Body ground	Always	10 kΩ or higher

   for LH

   Tester Connection	Condition	Specified Condition
   1 (RL+) - 2 (RL-)	Always	1.4 to 1.8 kΩ at 20ºC (68ºF)
   1 (RL+) - Body ground	Always	10 kΩ or higher
   2 (RL-) - Body ground	Always	10 kΩ or higher

   Check the speed sensor signal after replacement (See TEST MODE PROCEDURE).

REPLACE REAR SPEED SENSOR

[6] CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR SPEED SENSOR)

6.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR SPEED SENSOR)

Detail

1. Disconnect the skid control ECU connector.
2. Measure the resistance according to the value (s) in thetable below. Standard resistance: for RH

   Tester Connection	Condition	Specified Condition
   S13-16 (RR+) - A16-1 (RR+)	Always	Below 1Ω
   S13-16 (RR+) - Body ground	Always	10 kΩ or higher
   S13-15 (RR-) - A16-2 (RR-)	Always	Below 1Ω
   S13-15 (RR-) - Body ground	Always	10 kΩ or higher

   for LH

   Tester Connection	Condition	Specified Condition
   S13-22 (RL+) - A15-1 (RL+)	Always	Below 1Ω
   S13-22 (RL+) - Body ground	Always	10 kΩ or higher
   S13-23 (RL-) - A15-2 (RL-)	Always	Below 1Ω
   S13-23 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

[7] CHECK SPEED SENSOR AND SPEED SENSOR ROTOR SERRATIONS

7.CHECK SPEED SENSOR AND SPEED SENSOR ROTOR SERRATIONS

Detail

1. Reconnect the skid control ECU connector and the rear speed sensor connector.
2. Connect the oscilloscope to the rear speed sensorterminal of the skid control ECU.
3. Check that a waveform is output by each sensor circuitwhen the tires are rotated. OK: The same waveform is output from all the 4 wheelsand there is no noise or interference in thewaveform.
   • As the vehicle speed (wheel revolution speed) increases, a cycle of the waveform narrows and the output voltage becomes greater.
   • When noise is identified in the waveform on the oscilloscope, the erratic signals are generated due to speed sensor rotor's scratches, looseness or foreign matter attached to it.

   Check the speed sensor signal after cleaning or replacement (See TEST MODE PROCEDURE).

CLEAN OR REPLACE SPEED SENSOR OR SPEED SENSOR ROTOR

[8] RECONFIRM DTC

8.RECONFIRM DTC

Detail

1. Turn the ignition switch off.
2. Clear the DTC (See Pub. No. S1-YXZE05A, page 05-108).
3. Start the engine.
4. Drive the vehicle at the speed of 20 km/h (12 mph) ormore for at least 30 seconds.
5. Check if the same DTC is recorded (See Pub. No. S1- YXZE05A, page 05-108). Result:

   Result	Proceed to
   DTCs (C0210 and/or C0215) are not output	A
   DTCs (C0210 and/or C0215) are output	B

   If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (See PROBLEM SYMPTOMS TABLE).

　

A CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (See DIAGNOSIS SYSTEM)

B REPLACE SKID CONTROL ECU

9.DTC Clear

Detail

1. Confirm the DTC C0215 is inactive

   • Start the engine and let it idling condition.
   • Verify the DTC C0215 is inactive.

   

2. DTC Clear

   • Clear the DTC with Hino DX
   • Confirm the same DTC is not reoccurred

   

C0215 is reoccur: Return to first process Other DTC appear: Refer to concerned Trouble shooting

Complete