C1284

CIRCUIT DESCRIPTION
The lateral accelerometer performs a self test at initialization. The output of the sensor will be offset by a fixed amount for a short period of time after the EBTCM powers up. The test will run under the following conditions:
^ The ignition is ON.
^ All 4 wheel speeds are 0 km/h (0 mph).
^ The steer angle is within 90 degrees of centered.

CONDITIONS FOR SETTING THE DTC
The EBTCM does not detect the expected change in the lateral accelerometer input after initialization.

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.