Selectable Steering

The selectable steering button on the FCIM allows the driver to select 1 of 3 steering modes. These steering modes alter the feel and response of the EPAS system. After a selection is made, a soft feedback bump may be felt in the steering wheel. Pressing the switch causes the FCIM to send a message to the IPC and the PSCM. The IPC displays the current mode in the message center and the PSCM modifies EPAS operation according to the selected steering mode.

• Standard 

  : Default system setting. The system defaults to standard mode if the battery is disconnected.

• Sport 

  : Slightly higher effort required for steering with more road feel through the steering wheel.

• Comfort 

  : Slightly less effort required for steering with less road feel through the steering wheel.

If the vehicle is equipped with the selectable drive mode feature, the steering feel changes when a new drive mode is selected. This automatic selection can be overridden by using the selectable steering button. For additional information on the selectable drive mode feature, Refer to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description .

Component Description

EPAS Steering Gear 

The EPAS gear is an assembly consisting of a PSCM, a motor, and a steering torque sensor, all of which are serviced as an assembly. The inner and outer tie rods and the steering gear bellows boots are available separately for service.

• The steering torque sensor is mounted near the input shaft of the EPAS gear and is used by the PSCM to determine how much force is being used to turn the steering wheel.
• The EPAS gear has one inner tie rod located at each end of the gear assembly and is available separately for service.
• The EPAS gear has one outer tie rod located at each end of the gear assembly and is available separately for service.
• The EPAS gear has one bellows boot located at each side of the EPAS gear assembly. Each boot is held in place with 2 boot clamps. The boots and clamps are available for service.

PSCM 

The PSCM is the Electronic Control Unit (ECU) for the EPAS system. The module monitors all sensor inputs and HS-CAN2 messages relating to the EPAS system and directly controls the output of the EPAS motor.