Adjustable Pedals

Overview

The adjustable pedal feature uses an electrical motor to adjust the brake and accelerator pedal positions forward and rearward to increase driver comfort.

System Operation

System Diagram

Network Message Chart

 Module Network Input Messages: Adjustable Pedals

Adjustable Pedal System

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

Adjustable Pedals with Memory Feature

The adjustable pedals with memory feature are controlled by the SCCM , BCM and DSM . The pedals can be adjusted in 3 different ways:

• Using the adjustable pedals control switch.
• Using the memory set switch, when associated with the seat/mirror/pedal/column position programmed into the memory that is recalled using the memory set switch.
• Using the RKE feature, when associated with a memory setting, will recall the seat/mirror/pedal/column positions associated with that setting

The SCCM monitors the adjustable pedal motor and circuits for concerns. If a concern is detected, the SCCM is capable of setting DTCs.

Operating with Adjustable Pedals Control Switch

The pedals can be adjusted using the adjustable pedals control switch with the ignition in OFF, ON, ACC or RUN, regardless of the gear selector position. When the adjustable pedals control switch is pressed, a signal is sent to the SCCM which then sends voltage to the adjustable pedal motor. The motor then drives the pedals either forward or rearward (depending on which direction the switch was pressed) until the switch is released.

Operating with Memory Set Switch

The pedals can be adjusted using the memory SET switch with the ignition in OFF, ON, ACC or RUN; but the gear selector must be in the PARK position. When one of the memory set positions is recalled by pressing the memory set switch, the DSM senses continuity to ground through the memory set switch circuit and sends a message to the BCM over the MS-CAN . The BCM acts as a gateway module and transmits the message to the SCCM over the HS-CAN . The SCCM then provides voltage to the adjustable pedal motor to move the pedals.

The SCCM 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 receives a pedal position input from the adjustable pedals control 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 in Section 501-10 .

Operating with Remote Keyless Entry (RKE)

The pedals can be adjusted using the RKE transmitter with the ignition in OFF, ON, ACC or RUN; but the gear selector must be in the PARK position. When the RKE button is pressed on the IA key, the transmitted signal is received by the TPM module. The TPM module sends a message to the RFA along a hard wired LIN . The RFA then sends the message to the BCM over the MS-CAN . The BCM acts as a gateway module and transmits the message over the HS-CAN to the SCCM . The SCCM then provides voltage to the adjustable pedal motor to move the pedals to the position programmed into the IA key.

The SCCM 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 receives a pedal position input from the adjustable pedals control switch during a memory position recall, the module stops the memory recall and responds to the new pedal position input.

Component Description

Adjustable Brake Pedal and Bracket

The adjustable brake pedal and bracket contains a worm gear set that allows for forward and rearward movement of the pedal. The gear is driven by a cable attached to the adjustable pedal motor.

Adjustable Pedal Motor and Cable

The adjustable pedal motor is a single-speed, reversible electric motor that contains a Hall-effect sensor for the memory feature. The motor serviced with the brake pedal assembly. The ends of the cable are keyed and the cable itself is contained in a protective, plastic sleeve. The cable is not available separately for service.

Memory Set Switch

The memory set switch is a set of 2 momentary-contact, push-button switches that allow for automatic positioning of the driver seat, power mirrors and adjustable pedals to 3 programmable positions.

Adjustable Pedals Control Switch

The adjustable pedals control switch is a 2 position, momentary-contact, rocker style switch.

Steering Column Control Module (SCCM)

For additional information, refer to Section 211-05 .