183 / 1002
1.2L REVOTRON ENGINE
146
Stagnant humidity and water standing
directly on the sealing area (“bath tub”)
between cover and bottom part or
respectively the connector is not
permissible. That means the defined
mounting angles of the offer drawing must
be considered.
Formation of electro-chemical corrosion
created by the use and connection of
different metals within the installation of
the control device is to be avoided.
Following combination of materials are
not acceptable: Steel – Brass - PBT =
stress corrosion cracking (appearance of
base at NaCl load).
The first fixation point of the wiring
harness must be in a distance - 150 mm
from the cable outlet and on the same
vibration level as the ECU.
Relative motion between the wiring
harness and the ECU has to be
minimized.
It has to be assured that no water can
infiltrate through the wiring harness into
the connector or the ECU respectively.
This can be achieved by using a Siphon
or a breathing hole.
If the Electronic Control Module is coated,
it must be ensured, that the Pressure
Compensation Element (PCE), the
connector and the label are free of
coating.
The mounting position of the ECU has to
be in a distance which is large enough
from a heat source to avoid any influence
of heat transfer to the ECU.
The mounting place of the ECU should be
chosen to gain low humidity and corrosion
loads. Permanent water spraying based
on splash water must be avoided by
appropriate protections.
The impact of chemicals (e.g. oils, diesel,
and gasoline, detergents for cleaning,
brake fluid, battery acid, and so on)
should be low.