Power Steering System

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: PRECAUTION; 2013 MY FR-S [03/2012 -]

1. HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

(a) The vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident.

Before servicing (including inspection, replacement, removal and installation of parts), be sure to read the precautionary notices for Supplemental Restraint System Service Precautions.

2. PRECAUTIONS FOR REMOVAL, INSTALLATION AND REPLACEMENT OF ELECTRONIC MOTOR POWER STEERING COMPONENTS

(a) Be sure to align the front wheels straight ahead when removing and installing the power steering link assembly.

(b) If disconnecting the steering intermediate shaft and pinion shaft of the power steering link assembly, be sure to place matchmarks before starting the operation.

(c) If replacing the power steering ECU assembly, always replace it with a new one (if the power steering ECU assembly is not replaced with a new one, DTCs may be stored).

NOTICE:
Do not use the power steering ECU assembly from another vehicle (display model, etc.).

(d) After replacing the steering column assembly or power steering ECU assembly, write the assist map, initialize the rotation angle sensor and calibrate the torque sensor zero point Programming and Relearning.

3. HANDLING PRECAUTION

(a) When handling electronic parts:

* Avoid any impact to electronic parts such as ECUs and relays. Replace electronic parts with new ones if dropped or subjected to a severe blow.

* Do not expose any electronic parts to high temperatures or humidity.

* Do not touch the connector terminals in order to prevent deformation or malfunctions due to static electricity.

(b) When handling the steering column assembly:

* Avoid any impact to the steering column assembly, especially to the motor and torque sensor. Replace them with new ones if dropped or subjected to a severe blow.

* Do not pull the wire harness when moving the steering column assembly.

(c) When disconnecting the connectors related to the power steering system, turn the ignition switch to ON, center the steering wheel, turn the ignition switch off, disconnect the negative (-) battery terminal, and then disconnect the connectors.

4. PRECAUTIONS FOR CAN COMMUNICATION

(a) Perform troubleshooting for the communication line problems when DTCs of the CAN communication system are output. Be sure to start troubleshooting the power steering system after confirming that the CAN communication system is normal.

(b) Since the CAN communication line has a specific length and route, it cannot be repaired temporarily with a bypass wire, etc.