C1210

DTC C1201 FL WHEEL SENSOR-RANGE/PERFORMANCE
DTC C1204 FR WHEEL SENSOR-RANGE/PERFORMANCE
DTC C1207 RL WHEEL SENSOR-RANGE/PERFORMANCE
DTC C1210 RR WHEEL SENSOR-RANGE/PERFORMANCE

COMPONENT LOCATION
Refer to DTC C1200. C1200

GENERAL DESCRIPTION
Refer to DTC C1200. C1200

DTC DESCRIPTION
The ABS ECU monitors the wheel speed sensor signal continuously This code is set when an abnormal signal due to air gap problem or an abnormal speed change ratio are detected at the vehicle speed between 10 km/h to 80 km/h. Warning lamp is turned OFF unless additional faults are detected when the IG KEY is turned ON again, and wheel speed is more than 12 Km/h.

DTC DETECTING CONDITION





MONITOR SCANTOOL DATA
1. Engine "ON".
2. Connect scantool to Data Link Connector (DLC)
3. Start and drive vehicle in gear and maintain vehicle speed at or above 12 km/h (7 mph)
4. Monitor the "Wheel Speed Sensor" parameter on the Scantool.





5. Is parameter displayed within specifications?

YES
> Fault is intermittent caused by faulty HECU or external noise, was repaired and HECU memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair as necessary and then go to "Verification Of Vehicle Repair" procedure.

NO
> Go to "Component Inspection" Procedure.

COMPONENT INSPECTION
1. Lift the vehicle.
2. Ignition "ON".
3. Turn the wheel with hand.
4. Measure waveform between terminal "1" of the wheel speed sensor harness connector and chassis ground.





5. Is the measured waveform within specifications?

YES
> Fault is intermittent caused by poor connection in wheel speed sensor harness or external noise, Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage and external noise, an interference between harnesses. Repair or replace as necessary and then go to "Verification Of Vehicle Repair" procedure.
> If OK, Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification Of Vehicle Repair" procedure.

NO
> Check for improper installation of wheel speed sensor. If NG, repair as necessary and then go to "Verification Of Vehicle Repair" procedure.
> Check for damage of rotor teeth or wheel bearing. If NG, repair as necessary and then go to "Verification Of Vehicle Repair" procedure.
> Substitute with a known-good Wheel speed sensor and check for proper operation. If problem is corrected, replace Wheel speed sensor and then go to "Verification Of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.

1. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode
2. Using a scantool, Clear DTC.
3. Operate the vehicle within DTC Detecting Condition in General Information. (Start and drive vehicle in gear and maintain vehicle speed at or above 12 km/h (7 mph))
4. Are any DTCs present?

YES
> Go to the applicable troubleshooting procedure.

NO
> System performing to specification at this time.