Testing / Setting The Acc Sensor; Establishing The Driving Axis; Preparatory Measures; Aligning The Setting Device, Left Side - Bosch ACC 101 Aufbau- Und Bedienungsanweisung

6.

Testing / setting the ACC sensor

i The adjustment of the ACC sensor must be performed
meticulously, since a deviation in the sensor setting of just
0.2° in relation to the dynamic driving axis will impair the
entire system!
6.1

Establishing the driving axis

In order to check and set the ACC sensor, the mirror must be
aligned horizontally and vertically in relation to the driving axis of
the test vehicle.
In most cases, however, the test vehicle is not positioned
precisely at right angles to the setting device, and the test stand
itself may feature surface irregularities or an inclination.
The setting device is used to ascertain these deviations. This
procedure must be carried out for both the left and right-hand
sides of the vehicle.
On the basis of the values determined on both sides of the vehicle,
the self-diagnosis tester then calculates the appropriate mirror
settings to ensure correct alignment in relation to the driving axis.
6.2

Preparatory measures

The following measures must be carried out before you com-
mence testing and setting the ACC sensor:
G
Check rim for damage. Check quick-change clamp on
proper tight fitting
G
Check the tyre pressure and correct if necessary.
G
Check that the fuel tank is 50 % full.
G
Drive the test vehicle onto the test stand. The vehicle
should, as far as possible, be at right angles to the rail.
i If the angle of the vehicle's driving axis in relation to the
rail deviates by > 5°, the basic alignment cannot be
established (using the setting device).
G
Next, check that the ACC sensor is at the required distance
(120 cm +/- 5 cm) from the mirror.
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6.3

Aligning the setting device, left side

– Place the setting device on the rail and lock in place. To do so,
first pull the locking lever on the right-hand carry handle to
release the clamp. Now place the setting device precisely on
the rail with the clamp open. Release the lever once more to fix
the setting device in place on the rail.
– Ensure that the setting device is mounted correctly on the rail.
In addition, ensure that the mirror is set to the centre position
of the tilting device (see diagram, Item 1).
3
2
– Align the setting device using the vertical adjusting mechanism.
To do so, turn the knurled screw (diagram, Item 2) and check
the alignment by means of the spirit level which is attached to
the setting device (diagram, Item 3). ). Take care to always
position the spirit level precisely in the central position.
! The alignment procedure must be carried out each time the
setting device is repositioned. This compensates for any
irregularities in the area of the rail.
– Fasten the Universal quick-change clamp to the rear left-hand
wheel. Insert the axle of the wheel laser into the socket of the
Universal quick-change clamp. Align the wheel laser so that it is
as horizontal as possible, and secure it to the Universal quick-
change clamp by means of the setscrew.
– Now press the Universal quick-change clamp with wheel laser
downwards to optimize the holding play.
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456181/4-6 Wn