DTC C1040-00 (Millimeter Wave Radar)

DTC C1040-00  : Wheel Speed Signal Error

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• This DTC is recorded when the estimated yaw rate calculated based on the wheel speeds of the right and left wheels differs between the front and rear wheels.
• The specific conditions under which this DTC are as follows:
• • Abnormal tire diameter (low tire pressure, uneven wear, etc.)
  • Driving on a road having different road conditions on the right and left sides
• If this DTC is recorded, the integrated driver support system temporarily cancels its control to prevent the system from selecting an incorrect leading vehicle.
• When the difference in the estimated yaw rate between the front and rear wheels returns to normal, the integrated driver support system resumes its control.
• The functions of the integrated driver support system that will be temporarily canceled when this DTC is recorded can be confirmed with the DTC troubleshooting index .

DTC (IDAS)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Test-drive the vehicle on a straight road at speeds 25 mph (40 km/h) or more for 10 minutes or more.

   -5. Check for DTCs with the HDS.

   DTC Description	DTC
   C1040-00 Wheel Speed Signal Error

   Is DTC C1040-00 indicated?

   YES 

   The failure is duplicated. Check the tire pressure and inspect for uneven wear.

   NO 

   Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .