Normal Operation

The power steering control module (PSCM) monitors various inputs and outputs of the electronic power assist steering (EPAS) system in order to keep the system operating at peak capacity. Information provided by sensors (steering torque, vehicle speed, vehicle travel distance, etc.) are all compared to programmed and learned information. Likewise, outputs like the motor and steering rack (travel) are tested against programmed and learned information.

1. C1: CHECK PSCM DTCS 

   Review the returned PSCM DTCs.

   Is DTC U3000:96 present? 

   Yes	No
   INSTALL a new EPAS gear. REFER to POWER STEERING SYSTEM , Removal and Installation .	Go to  C2.

2. C2: VERIFY PRESENCE OF EPAS GEAR HEAT SHIELD 

   Is the heat shield present and is it installed correctly? 

   Yes	No
   Go to  C3.	REINSTALL the heat shield or INSTALL a new heat shield as necessary. Go to  C3.

3. C3: TEST DRIVE TO CHECK FOR RETURNING DTCS 

   Clear the PSCM DTCs.

   Cycle the ignition to OFF and then back to RUN.

   NOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.

   Test drive the vehicle in the following manner:

   • With the engine running/ready, stop the vehicle on an unsealed concrete or asphalt surface (in order to provide adequate friction for a thorough test).
   • With the vehicle in gear and the brakes applied, turn the steering wheel lock-to-lock.
   • Return the steering wheel to the center position and move the vehicle forward approximately 32 cm (1 ft).
   • With the vehicle in gear and the brakes applied, turn the steering wheel lock-to-lock.
   • Return the steering wheel to the center position and move the vehicle forward approximately 32 cm (1 ft).
   • With the vehicle in gear and the brakes applied, turn the steering wheel lock-to-lock.
   NOTE: The next portion of the test drive will require the vehicle to be driven at highway speeds.