C1213

DTC C1213 WHEEL SPEED FREQUENCY ERROR

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, if the speed difference with adjacent wheel is out of permissible range or the ABS control cycle is abnormal.

DTC DETECTING CONDITION





MONITOR SCANTOOL DATA
1. Engine "ON".
2. Connect scan tool to Data Link Connector (DLC)
3. Start and drive vehicle in gear and maintain vehicle speed at or above 10 km/h (6.2 mph)
4. Monitor the "Wheel Speed Sensor" parameter on the scan tool.





5. Is parameter displayed within specifications?
YES
>Fault is intermittent caused by poor connection in wheel speed sensor harness, 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, Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification Of Vehicle Repair" procedure.
>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 following point at wheel speed sensor which has abnormal waveform.
>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 scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
2. Using a scan tool, Clear DTC.
3. Operate the vehicle within DTC Detecting Condition in General Information. (Start and drive vehicle in gear and maintain vehicle speed is approx. 50 km/h or more (31.1 mph or more))
4. Are any DTCs present?
YES
>Go to the applicable troubleshooting procedure.
NO
>System performing to specification at this time.