C1283

DTC C1283: Excessive Time To Center Steering (Part 1 Of 2):

DTC C1283: Excessive Time To Center Steering (Part 2 Of 2):

DTC C1283 Schematic:

CIRCUIT DESCRIPTION
Steer angle centering is the process by which the EBTCM calibrates the steering sensor output so that it reads zero when the steering wheel is centered. The initial steering wheel center position is calculated after driving 10 km/h (6 mph) for more than 10 seconds in a straight line on a fairly level surface using data from the yaw rate sensor, lateral accelerometer and wheel speed sensors.

CONDITION FOR SETTING THE DTC
The initial steering wheel center position will be determined quickly unless there is a large offset in the yaw sensor or lateral accelerometer output. When this happens the system will believe the steering is far off center even though the vehicle is being driven in a straight line. Under this condition and with a continuous vehicle speed of 40 km/h (25 mph) or greater for longer than 10 minutes DTC C1283 will be set.

ACTION TAKEN WHEN THE DTC SETS
A malfunction DTC is stored, ABS and TCS remain enabled, Stabilitrak is disabled and the STABILITY REDUCED message will be displayed on the DTC.

CONDITIONS FOR CLEARING THE DTC
Condition for DTC is no longer present and scan tool clear DTC function is used. Fifty start cycles have passed with no DTCs detected.

DIAGNOSTIC AIDS
It is very important to check the vehicle for proper alignment. The car should not pull in either direction while driving straight on a flat surface. It is important to find out from the driver when the code was set, (when the STABILITY REDUCED message was activated) and what was he doing at the time. This information will help to duplicate the failure. It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction. An intermittent malfunction is most likely caused by a poor connection, rubbed through wire insulation, or a wire that is broken inside the insulation. The Snapshot function on the scan tool may help in finding an intermittent DTC C1283.

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
4. Check the Lateral Accelerometer.
6. Check the Yaw Rate Sensor.