Electronic Power Assist Steering (EPAS) Column Assembly Initialization

Steering System

Electronic Power Assist Steering (EPAS) Column Assembly Initialization

After installing a new EPAS steering column assembly, the steering column assembly must be configured and the steering wheel position sensor must be calibrated. Refer to Steering Wheel Position Sensor Calibration Service and Repair.

Electronic Power Assist Steering (EPAS) Column Assembly Configuration

Refer to Programmable Module Installation (PMI) in Module Configuration Programmable Module Installation (PMI).

Active Park Assist

When the active park assist system is enabled, the Parking Aid Module (PAM) will utilize ultrasonic sensors to locate and measure a parking space. Once a parking space is identified by the system and accepted by the driver, the PAM will send steering command messages to the PSCM over the HS-CAN bus. The PSCM will utilize steering angle information and wheel speed sensor information (wheel speed is transmitted by the ABS module over the HS-CAN bus) to actuate the steering system as requested by the PAM.

Any driver inputs via the steering wheel will deactivate the active park assist system. Also, the presence of certain DTCs in the PSCM, PAM and/or ABS module will disable the system or keep the system from being activated. Refer to Active Park Assist Testing and Inspection for additional information on the active park assist system.