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Vehicle Stability Enhancement System Unwanted Activation



Vehicle Stability Enhancement System Unwanted Activation

Circuit Description

The Vehicle Stability Enhancement System (VSES) is activated by the electronic brake control module (EBCM) calculating the desired yaw rate and comparing it to the actual yaw rate input. The desired yaw rate is calculated from measured steering wheel position, vehicle speed, and lateral acceleration. The difference between the desired yaw rate and actual yaw rate is the yaw rate error, which is a measurement of oversteer or understeer. If the yaw rate error becomes too large, the EBCM will attempt to correct the vehicle's yaw motion by applying differential braking to the left or right front wheel.

Test Description

The number below refers to the step number on the diagnostic table.

5. Perform the Steering Position Sensor Test in order to verify if the steering wheel position sensor (SWPS) is operating properly.

Step 1 - Step 10:




Step 11 - Step 14:





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