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92
REAR AIR SUSPENSIONS
Print 603.93.281/A
ECU programming/setting
WABCO ECU is not requiring programming since it is
supplied already programmed.
Setting can be performed by MODUS, E.A.SY. and IT2000
diagnostic systems and shall be performed when replacing the
following:
-
ECU;
-
level sensor;
-
level sensor levers.
Connect the diagnostic tool to the 38-pin socket and proceed
as follows to obtain correct setting:
-
check and adjust to 110 mm the level sensor lever length,
if required;
-
lift the chassis by depressing the proper video push
button (max. lifting);
-
Insert the special spacers provided (99346151) between
the chassis and the rear axle measuring 65 mm;
-
lower the chassis completely by depressing the proper
video push button (max.lowering);
-
set ECU by depressing the proper video push button.
768822
LEVEL SENSOR
Figure 103
Level sensors inform constantly the ECU on distance changes
between chassis and road level.
Level sensors consists of a coil secured to the chassis and a
small piston.
When chassis height changes, a cam and a lever linked to the
axle make the piston move inside the coil, thus modifying its
inductance.
These changes will be used by the ECU in the different stages
of the system.
Print 603.93.651
Revi - February 2005
Level sensor replacement
Removal
Figure 104
Disconnect the electrical connection (2), loosen the screw
(⇒) and disconnect the levers. Loosen the fastening screws
and remove the level sensor (1).
Refitting
Reverse removal operations to perform refitting.
Perform level sensor and ECU setting as shown in the
relevant paragraphs "ECU programming/setting" and
"Level sensor adjustment".
Level sensor adjustment
Figure 105
62358
Operate on adjustment screws and set relay lever X value to
110 mm.
Perform ECU setting as shown in the relevant paragraphs
"ECU programming/setting".
D
E
4
AILY
URO
62460
62584
Base - March 2006
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