American Expedition Vehicles ProCal Module User Guide - Manual (Page 8)

2/5/2009 Page 8 of 10 AEV30200AA
Steering Wheel Centering Mode
Description: The ESP system present on all newer Chrysler vehicles utilizes a digital sensor pack in the
steering wheel to determine exactly where the user wants the vehicle to go. Disconnecting the steering,
or replacing any of the related components (tie rod, front axle etc) can cause this module to become out
of correlation with the wheels. To center the wheels with the steering system, the AEV ProCal can
indicate to the user exactly where zero is on the internal sensor.
By enabling the Steering Center mode, the ProCal module determines where the steering wheel is and
lights up a corresponding turn signal lamp and turn signal indicator. If the wheel is too far to the right,
the right indicator will light. If the wheel is too far to the left, the left indicator will light. If the steering
wheel is stopped exactly dead center, the highbeam indicator and both turn signal lamps will light.
Notes: This is a feature normally found in the dealer diagnostic tool. The ProCal module will allow the
user to perform a proper alignment without having to use the dealer diagnostic tool.
The only way to exactly correlate the wheels with the steering wheel is to complete the process on an
alignment rack.
If the function is not terminated properly the lights/indicators may remain stuck on or off. Be sure to exit
the mode properly by enabling either turn signal before removing the module. If a clean exit does not
occur, plug the module back in, enable the turn signals, and then remove the module. This can also be
reset by removing and reconnecting the Positive (+) battery terminal.
Procedure: Consult the Quick Reference Guide and set the DIP switches accordingly. With the ignition
on and engine off, plug the module into the OBD port. Use the indications to center the wheel. To exit
the mode, activate either the right or left turn signal, and then remove the module.