C1282

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CIRCUIT DESCRIPTION
When the ignition is ON and the vehicle is stationary, the yaw rate bias is calculated by the EBTCM. This value is used to compensate for offsets in the yaw rate sensor output due to temperature changes and manufacturing differences. If the yaw rate bias is greater than 0.196 volts (5 degrees/second), the yaw rate sensor is assumed to be bad and this DTC sets. With no offset bias, the scan tool will report a zero yaw rate value of 2.5 volts (0 degrees/second).

CONDITIONS FOR SETTING THE DTC
One of the following conditions occur:
^ After the steering angle has been centered, the yaw rate sensor voltage is less than 0.15 volts (-67 degrees/second) or greater than 4.85 volts (67 degrees/second).
^ The measured yaw rate changes by more than 390 degrees/second in less than 1 second.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction DTC is stored.
^ Stabilitrak is disabled.
^ The DIC displays the SERVICE STABILITY SYS message.
^ The ABS/TCS remain functional.

CONDITIONS FOR CLEARING THE DTC
^ The condition for DTC is no longer present and you used scan tool Clear DTCs function.
^ The condition for DTC is no longer present and you used the On-Board Clear DTCs function.
^ The EBTCM does not detect the DTC in 50 drive cycles.

DIAGNOSTIC AIDS
^ During diagnosis, park the vehicle on a level surface.
^ Find out from the driver under what conditions the DTC was set (when the DIC displayed the SERVICE STABILITY SYS message). This information will help to duplicate the failure.
^ Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.
^ Poor connections, broken insulation, or a break in the wire inside the insulation may cause an intermittent malfunction.
^ If an intermittent malfunction exists, refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.