C1207

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 fault is detected any more 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 scan tool to Data Link Connector(DLC).
3. Start and drive vehicle in gear and maintain vehicle speed at approximately 12 km/h or more(7 mph or more)
4. Monitor the "Wheel speed sensor" parameter on the scan tool.

Specification: Approximately 12 km/h or more (7 mph or more):

5. Is parameter displayed within specifications?

YES
^ Fault is intermittent caused by poor connection in wheel speed sensor harness and/or HECU's connector or was repaired and HECU memory was not cleared. Go to "Component Inspection" 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. If OK, Go to "Component Inspection" Procedure.

COMPONENT INSPECTION

1. Ignition "OFF".
2. Engine "ON".
3. Start and drive vehicle in gear and maintain vehicle speed at approximately 12 km/h or more (7 mph or more).
4. Does warning lamp remain On?

YES
^ 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
^ Fault is intermittent caused by open or short of wheel speed sensor harness faulty wheel speed sensor. Go to the applicable troubleshooting 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 at approximately 12 km/h or more (7 mph or more))
4. Are any DTCs present?

YES
^ Go to the applicable troubleshooting procedure.

NO
^ System performing to specification at this time.