Pedal Positioning System: Description and Operation

ADJUSTABLE PEDAL SYSTEM
The Adjustable Pedals are designed to enable the fore and aft repositioning of the brake and accelerator pedals. This results in improved ergonomics in relation to the steering wheel for taller and shorter drivers. Being able to adjust the pedal positions also allows the driver to set steering wheel tilt and seat positions to the most comfortable position available. The positions can be adjusted without compromising safety or comfort in actuating the pedals. Repositioning the pedals does not change the effort required for actuation. Changing of pedal position is accomplished by means of a motor.

Operating the adjustable pedal switch activates the pedal drive motor. The pedal drive motor changes the position of the brake and accelerator pedals. The pedal can move rearward or forward. The pedals are moved to a position that is most comfortable for the driver. The accelerator and brake pedals are moved at the same rate to ensure synchronization. Neither the motor nor mechanisms are subject to mechanical stress of brake or accelerator application. The adjustable pedals do not operate when the vehicle is engaged in reverse or when the cruise control is active.

The adjustable pedals feature is available on a non memory/memory-equipped vehicle. The system control module, known as the Memory Heated Seat Adjustable Pedal Module (MHSAPM) or Memory Seat Adjustable Pedal Module (MSAPM), is located under the driver's seat and controls the adjustable pedals. The adjustable pedals control switch is located on the driver door trim panel. This switch is hardwired to the Driver Door Module (DDM). When the operator actuates the switch on, the DDM sends a message via the PCI Bus to the MHSAPM/ MSAPM requesting pedal adjustment. The MHSAPM/MSAPM retains the memory recall for the adjustable pedals which can be recalled from the driver door mounted memory buttons or RKE transmitter.