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.
• Using the RKE feature, when associated with a memory 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 set to 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 set to OFF, ON, ACC or RUN; but the transmission must be in PARK. 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 the General Procedure: Memory Position Programming in Seating .

Operating with Remote Keyless Entry(RKE) 

The pedals can be adjusted using the RKE transmitter with the ignition set to OFF, ON, ACC or RUN; but the transmission must be in PARK. When the RKE button is pressed on the IKT or the IA key, the transmitted signal is received by the TPM module. The TPM module sends a 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 IKT or 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.