C1201

DTC C1201 WHEEL SPEED SENSOR FRONT-LH RANGE PERFORMANCE / INTERMITTENT
DTC C1204 WHEEL SPEED SENSOR FRONT-RH RANGE PERFORMANCE / INTERMITTENT
DTC C1207 WHEEL SPEED SENSOR REAR-LH RANGE PERFORMANCE / INTERMITTENT
DTC C1210 WHEEL SPEED SENSOR REAR-RH RANGE PERFORMANCE / INTERMITTENT

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 an abnormal speed change ratio is detected while the vehicle speed is more than 1.24 mph. Warning lamp is turned OFF if the detected fault is not more than when the IG KEY is turned to ON again, and wheel speeds are more than 6.21 mph.

DTC DETECTING CONDITION





MONITOR SCANTOOL DATA
1. Connect scantool to Data Link Connector (DLC)
2. Engine "ON".
3. Start and drive vehicle in gear and maintain vehicle speed is approximately 24.8 mph or more
4. Monitor the "Wheel speed sensor" parameter on the Scantool.

Specification: Approximately 24.8 mph or more (24 mph or more)

5. Is parameter displayed within specifications?

YES
> Fault is intermittent caused by faulty wheel speed sensor and/or faulty HECU or was repaired and HECU memory was not cleared. Repair or replace as necessary and then 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 is approximately 24.8 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 faulty wheel speed sensor and/or faulty HECU or was repaired and HECU memory was not cleared. 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 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 is approximately 24.8 mph or more)
4. Are any DTCs present?

YES
> Go to the applicable troubleshooting procedure.

NO
> System performing to specification at this time.