TIAGO

STEERING

STEERING ANGLE CALIBRATION PROCEDURE

It is necessary to calibrate and initialize the EPAS ECU in order to correctly startup the steering system.

Calibration: When calibrating, the steering gear’s/ front axle’s straight-ahead position is compared with the

straight-ahead position of the steering column’s internal steering angle. For Calibrating the EPAS ECU, use

either ZF-Test man or TML diagnostic tester.

Initialization and teach-in software end stops: This is done by steering past the index position on the internal

torque sensor (the steering column) in the straight-ahead position, when steering left and steering right. At

the same time, the software end stops are taught in. After initializing, “Active reset” & “software end stop”

functions will be active

NOTE:



While doing the steering angle calibration and initialization process, Please follow the instruction which

are displaying on Diagnostics tool window.



If required, before doing steering angle calibration and initialization process, operator needs to do first

rack centralization followed by wheel alignment on vehicle as per specification.



If steering angle calibration process is not completed, than EPAS warning lamp will glow in IPC.

PROCEDURE:

A) INITIALIZATION PROCEDURE