Steering Angle Sensor: Testing and Inspection

Note: This article has been updated by TSB L-SB-0015-08 Dated March 31, 2008

Disconnect Battery & Perform Zero Point Calibration After Wheel Alignment Adjustment

Introduction
The purpose of this TSIB is to provide information on when and how to perform the zero point calibration on a vehicle equipped with Vehicle Stability Control (VSC). Momentarily disconnecting the battery is a necessary step for performing the zero point calibration.





Required Tools & Equipment

NOTE
^ Additional TIS techstream units may be ordered by calling Approved Dealer Equipment (ADE).

^ The Lexus Diagnostic Tester and CAN Interface Module may also be used to perform the service procedures listed in this bulletin.

Preliminary Information

Perform this procedure if any of these repairs have been performed on the vehicle:

^ Wheel alignment has been adjusted.

^ Any chassis components have been removed/installed or replaced.

Repair Procedure

1. Disconnect the cable from the negative (-) battery terminal for MORE THAN two (2) seconds.

2. Reconnect the cable to the negative (-) battery terminal.

3. Perform the applicable zero point calibration of the yaw rate sensor and/or the steering angle sensor.

Refer to the applicable TSIB or Repair Manual for the zero point calibration procedure.

4. Re-initialize all applicable systems available on the vehicle (power window sunroof power lift door etc.).