C1285

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CIRCUIT DESCRIPTION
The lateral accelerometer output is measured by the EBTCM when the ignition is ON. The usable output voltage range for the lateral accelerometer is 0.25-4.75 volts. The scan tool will report a zero lateral accelerometer signal of 2.5 volts if no sensor bias (offset) is present.

CONDITIONS FOR SETTING THE DTC
All of the following conditions occur:
^ The ignition is ON.
^ The lateral accelerometer input is less than 0.15 volts or greater than 4.85 volts for more 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.