Parameterisation Of The Steering Gear; Calibrating The Steering Angle Sensor; Prerequisites; Calibrating - Bosch Servolectric EPSapa Serviceanleitung

en
4.1

Parameterisation of the Steering Gear

The steering system is parameterized by automatic assignment of the vehicle or by manual programming
with a suitable diagnostic tool in a service workshop (e.g., (z. B. KTS 560/590 mit DCU 220 von Robert
Bosch).
If no programming of the assistance characteristic takes place, the steering system (Servolectric mail in-
dicator light is off) will start to operate using a characteristic that is not assigned to the vehicle. As this
characteristic is not matched to the vehicle concerned, any driving on public roads is not permissible.
A difference can be made between the following cases when parameterising the steering gear:
1. The parameterisation is carried out automatically ("Plug & Play").
2. The parameters are set manually using a suitable diagnostic tester by selecting the vehicle equipment variant.
3. The parameters are compared with the OEM database ("PassThru"). Registration in the corresponding OEM
portal is required for this.
If a steering angle sensor is fitted to the steering gear, this sensor must be calibrated and initialised to en-
sure a correct starting up of the steering system.
4.2

Calibrating the steering angle sensor

Calibrate the optional steering angle sensor using a suitable diagnostic tool.
The calibrating operation serves to match the straight-ahead driving position of the steering gear with that of the
electric control unit.
4.2.1

Prerequisites

 Battery voltage: 9...16 V
 Vehicle is at standstill
 Steering gear mounted to the axle measuring stand in the straight-ahead position
 Front axle measured and adjusted
 Internal steering angle sensor activated
4.2.2

Calibrating

Fig. 3: Calibrating the steering angle sensor
1. Turn the ignition on and start the driving engine
2. Start the calibrating operation with a suitable diagnostic tool.
3. Rotate the steering wheel 45° to the left, steering velocity at a moderate speed.
4. Rotate the steering wheel to the straight-ahead position.
7806 S 2022-05 en V01
Putting the Steering Gear into Operation | 4
9 / 16