Steering - VGRS System Initialization Procedure
L-SB-0142-10September 30, 2010
Initialization of VGRS System During PDS
Service Category
General
Section
Pre-Delivery Service
Market
USA
Applicability
Introduction
This bulletin describes the initialization procedure for the Variable Gear Ratio Steering (VGRS) system.
The DCC fuses are removed at the assembly plant to reduce parasitic current draw from the battery during transport and storage. As a result of the removal of the DCC fuses the VGRS system will be inoperative and the steering wheel may be off-center. After the DCC fuses have been reinstalled the VGRS system will be operative but the steering wheel may become oft-center by 5 - 10 degrees. This condition may also appear when the battery terminal has been disconnected. Initialize the VGRS system following the procedure in this bulletin after installing the DCC fuses or when reconnecting the battery terminal.
Do NOT adjust the steering wheel centering (i.e., do NOT adjust tie rod ends) before initialization of the VGRS system, or the steering may be off-center on the opposite side after initialization.
Required Tools & Equipment
Additional TIS Techstream units may be ordered by calling Approved Dealer Equipment (ADE).
Warranty Information
Initialization Procedure
1. Drive the vehicle on a straight road at 22 mph (35 km/h) or more for at least 5 seconds. At this point the steering wheel may be off-center by 5 - 10 degrees.
NOTE
In this step, the neutral position of the steering wheel is recorded in the VGRS ECU memory.
2. Perform normal cornering 2 - 3 times. The steering wheel position is automatically corrected in this step.
3. With the vehicle at a standstill turn the steering wheel from lock to lock then drive straight again and the steering wheel should be centered.
4. Confirm the steering wheel is centered.
^ If the steering wheel is centered initialization is complete. Go to step 5.
^ If the steering wheel is off-center go to step 1.
5. Confirm initialization has been completed.
A. Access the VGRS Data List using TIS Techstream.
B. Confirm the "STRAIGH ANG FLG" parameter reads "VALID:"
NOTE