System Operation

Adjustable Pedals

System Operation

System Diagram





Network Message Chart

Module Network Input Messages: Adjustable Pedals






Adjustable Pedal System

The adjustable pedals with memory feature are controlled by the SCCM (Steering Column Control Module), BCM (Body Control Module) and DSM (Driver Seat Module). The pedals can be adjusted in 3 different ways:

- Using the pedal adjust switch

- Using the memory SET switch, when associated with the seat/mirror/pedal position programmed into the memory that is recalled using the memory set switch.

- Using the Remote Keyless Entry (RKE) feature, when associated with a memory setting, will recall the seat/mirror/pedal positions associated with that setting.

The SCCM (Steering Column Control Module) monitors the adjustable pedal position using a Hall-effect sensor that is integral to the adjustable pedal motor. When a pedal adjustment command is detected by the SCCM (Steering Column Control Module), voltage is supplied from the SCCM (Steering Column Control Module) to the adjustable pedal motor. The motor then drives the pedals to the desired position.

The adjustable pedal motor is attached directly to the accelerator pedal bracket and controls the accelerator pedal directly. One end of the motor is attached to the pinion of a worm gear set to adjust the accelerator pedal position. The other end of the motor is attached to a cable inside a sleeve, which is connected to the brake pedal and bracket assembly for the adjustment of the brake pedal. When the motor rotates, the worm gear set on the accelerator pedal and the cable and sleeve assembly rotate moving both pedals simultaneously. The motor direction of rotation determines the direction of pedal movement, forward or rearward.

The pedals can be adjusted with the ignition switch in the OFF, ON, ACC or RUN position, regardless of the gear selector position.

The SCCM (Steering Column Control Module) monitors the adjustable pedal motor and circuits for concerns. If a concern is detected, the SCCM (Steering Column Control Module) is capable of setting DTCs (Diagnostic Trouble Codes).

Operating with Memory Set Switch

When 1 of the 3 memory set positions is recalled by pressing the memory set switch (part of the drivers side door lock control switch), the DSM (Driver Seat Module) senses continuity to ground on the memory set switch circuit and sends a message to adjust the pedal position over the MS-CAN (Medium Speed Controller Area Network) to the BCM (Body Control Module). The BCM (Body Control Module) acts as a gateway module and transmits the message over the HS-CAN (High Speed Controller Area Network) to the SCCM (Steering Column Control Module). The SCCM (Steering Column Control Module) then provides voltage to the adjustable pedal motor to move the pedals. The SCCM (Steering Column Control Module) monitors the Hall-effect sensor in the adjustable pedal motor and stops sending voltage to the motor when the required pedal position is reached. If the SCCM (Steering Column Control Module) receives a pedal position input from the pedal adjust switch during a memory position recall, the module stops the memory recall and responds to the new pedal position input.For information on setting and recalling a memory pedal position, REFER to Memory Position Programming Programming and Relearning.

Operating with Remote Keyless Entry (RKE) Transmitter

When the RKE (Remote Keyless Entry) button is pressed on the IA (Intelligent Access) key, the transmitted signal is received by the TPM (Tire Pressure Monitor) module. The TPM (Tire Pressure Monitor) module sends a message to the RFA (Remote Function Actuator) along a hard wired LIN (Local Interconnect Network). The RFA (Remote Function Actuator) then sends the message to the BCM (Body Control Module) over the MS-CAN (Medium Speed Controller Area Network). The BCM (Body Control Module) acts as a gateway module and transmits the message over the HS-CAN (High Speed Controller Area Network) to the SCCM (Steering Column Control Module). The SCCM (Steering Column Control Module) then provides voltage to the adjustable pedal motor to move the pedals to the position programmed into the IA (Intelligent Access) key.

Operating with Pedal Adjust Switch

When the pedal position is adjusted using the pedal adjust switch, voltage is applied from the SCCM (Steering Column Control Module) to the adjustable pedal motor to move the pedals in the required direction.