C0205

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C0200/31,C0205/32,C1271/71,C1272/72,C1330/35,C1331/36: 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)

DTC C1330/35 - Right Front Speed Sensor Circuit

DTC C1331/36 - Left Front Speed Sensor Circuit

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.
Speed sensor rotors have 48 serrations. The hall IC type speed sensor use the frequency of output pulses to detect the vehicle speed. Because the sensor outputs digital pulses, it can detect vehicle speeds even when the vehicle is nearly stationary.
DTCs C1271/71 and C1272/72 will be cleared when the speed sensor sends a vehicle speed signal or when Test Mode ends. DTCs C1271/71 and C1272/72 are output only in Test Mode.

HINT:
- DTCs C0200/31, C1271/71 and C1330/35 are for the front speed sensor RH.
- DTCs C0205/32, C1272/72 and C1331/36 are for the front speed sensor LH.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (FRONT SPEED SENSOR)
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Select the Data List on the Techstream Data List / Active Test.

ABS/VSC/TRAC

(d) Check that the speed value output from the speed sensor displayed on the Techstream.
HINT: Factors that affect the indicated vehicle speed include tire size, tire inflation, and tire wear. The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, see the reference chart On-Vehicle Inspection.

OK:
The speed value output from the speed sensor displayed on the Techstream is the similar speed as indicated on the speedometer.

NG -- CHECK FRONT SPEED SENSOR INSTALLATION
OK -- Continue to next step.

2. PERFORM TEST MODE INSPECTION (SIGNAL CHECK)
(a) Turn the ignition switch off.
(b) Perform sensor check in Test Mode Procedure Test Mode Procedure.
OK:
All Test Mode DTCs are not output.

NG -- CHECK FRONT SPEED SENSOR INSTALLATION
OK -- Continue to next step.

3. RECONFIRM DTC
(a) Turn the ignition switch off.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Start the engine.
(d) Drive the vehicle at a speed of 45 km/h (28 mph) or more for at least 60 seconds.
(e) Check if the same DTC is recorded Reading and Clearing Diagnostic Trouble Codes.
Result:

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

B -- REPLACE FRONT SPEED SENSOR
A -- CHECK FOR INTERMITTENT PROBLEMS
4. CHECK FRONT SPEED SENSOR INSTALLATION

(a) Turn the ignition switch off.
(b) Check the speed sensor installation.
OK:
There is no clearance between the sensor and the front steering knuckle.
The installation bolt is tightened properly.
Torque
8.0 N*m (82 kgf*cm, 71 in.*lbf)

NG -- INSTALL FRONT SPEED SENSOR CORRECTLY
OK -- Continue to next step.

5. CHECK FRONT SPEED SENSOR TIP
(a) Remove the front speed sensor Removal.
(b) Check the speed sensor tip.
OK:
No scratches, oil, or foreign matter on the sensor tip.
NOTICE: Check the speed sensor signal after cleaning or replacement Test Mode Procedure.

NG -- CLEAN OR REPLACE FRONT SPEED SENSOR
OK -- Continue to next step.

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

(a) Install the front speed sensor.
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
(c) Disconnect the skid control ECU connector and the front speed sensor connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for RH

for LH

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. RECONFIRM DTC
(a) Reconnect the skid control ECU connector and the front speed sensor connector.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Start the engine.
(d) Drive the vehicle at a speed of 45 km/h (28 mph) or more for at least 60 seconds.
(e) Check if the same DTC is recorded Reading and Clearing Diagnostic Trouble Codes.
Result:

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

B -- CHECK FOR INTERMITTENT PROBLEMS
A -- Continue to next step.

8. REPLACE FRONT SPEED SENSOR
(a) Turn the ignition switch off.
(b) Replace the front speed sensor Removal.
NOTICE: Check the speed sensor signal after replacement Test Mode Procedure.

NEXT -- Continue to next step.

9. RECONFIRM DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Start the engine.
(c) Drive the vehicle at a speed of 45 km/h (28 mph) or more for at least 60 seconds.
(d) Check if the same DTC is recorded Reading and Clearing Diagnostic Trouble Codes.
Result:

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

B -- END
A -- Continue to next step.

10. REPLACE FRONT SPEED SENSOR ROTOR
(a) Turn the ignition switch off.
(b) Remove the front drive shaft assembly Removal.
(c) Replace the front drive outboard joint shaft assembly (front speed sensor rotor) Disassembly.
HINT: If the front speed sensor rotor needs to be replaced, replace it together with the front drive outboard joint shaft assembly.
NOTICE: Check the speed sensor signal after replacement Test Mode Procedure.

NEXT -- Continue to next step.

11. RECONFIRM DTC
(a) Install the front drive shaft assembly.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Start the engine.
(d) Drive the vehicle at a speed of 45 km/h (28 mph) or more for at least 60 seconds.
(e) Check if the same DTC is recorded Reading and Clearing Diagnostic Trouble Codes.
Result: