Component Description

Steering Gear 

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

• The steering shaft torque sensor is mounted near the input shaft of the EPAS gear and is used by the PSCM to determine how much force the steering wheel is being turned by.
• 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.
• The EPAS gear has isolators located at each attachment point of the gear. These isolators aid in the reduction of NVH concerns and are not available separately for service.

Power Steering Control Module (PSCM) 

The PSCM is the ECU for the EPAS system. The module monitors all sensor inputs and HS-CAN messages that relate to the EPAS system and directly controls the output of the EPAS motor. If a new PSCM is installed, the module must be programmed with the correct vehicle information. REFER to Module Configuration , PMI.