Steering System Precaution

Steering. Corolla. Zre142 Aze141
Steering Column. Corolla. Zre142 Aze141

  1. IGNITION SWITCH EXPRESSIONS

  1. HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

  1. HANDLING PRECAUTIONS FOR STEERING COLUMN

Steering System -- Precaution



1.IGNITION SWITCH EXPRESSIONS

HINT:
The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.

Expression
Switch Type
Ignition Switch (position)
Engine Switch (condition)
Ignition Switch off
LOCK
Off
Ignition Switch ACC
ACC
On (ACC)
Ignition Switch ON
ON
On (IG)
Engine Start
START
Start

2.HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

  1. The vehicle is equipped with an SRS (Supplemental Restraint System). 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 the Supplemental Restraint System (COROLLA_ZRE142 RM000000KT10H0X.html).


3.HANDLING PRECAUTIONS FOR STEERING COLUMN

  1. When handling the steering column assembly:

    1. Avoid any impacts to the steering column assembly, especially to the motor or the torque sensor. Replace the steering column assembly with a new one if it is dropped or subjected to any severe impacts.

    2. Do not pull on any wire harness when moving the steering column assembly.

    3. After replacing the steering column assembly or power steering ECU assembly, calibrate torque sensor zero point (COROLLA_ZRE142 RM00000275305CX.html for 2AZ-FE, COROLLA_ZRE142 RM00000275305DX.html for 2ZR-FE).

    4. Do not release the tilt lever when the steering column assembly is not installed on the vehicle.

  2. When disconnecting or reconnecting the connectors:

    1. When disconnecting the connectors related to the electric motor power steering system, turn the ignition switch to ON (the engine is stopped), center the steering wheel, turn the ignition switch off, and then disconnect the connectors.

    2. When reconnecting the connectors related to the electric motor power steering system, make sure that the ignition switch is turned off, center the steering wheel and then turn the ignition switch to ON (the engine is stopped).

      NOTICE:
      Do not turn the ignition switch to ON without the steering wheel centered.

    3. If the above operations are not carried out correctly, the steering center point (zero point) will deviate, causing a difference in steering effort between right and left turns. If there is a difference in the steering effort between right and left turns, perform the torque sensor zero point calibration (COROLLA_ZRE142 RM00000275305CX.html for 2AZ-FE, COROLLA_ZRE142 RM00000275305DX.html for 2ZR-FE).