MAINTENANCE
208
7-Pin Connection
ATC can be connected via the auxiliary 12S
(white/grey) plug and requires power on
Pins 4 (permanent supply) and 3 (earth).
Please ensure that your vehicle towbar is
correctly connected to ensure correct ATC
operation. This can be checked with the use
of a multimeter. Important - A 20 amp fuse is
required for the constant 12V supply to Pin 4
on the 12S socket. If only a single fuse is fitted
to supply both Pins 4 and Pin 6, the power
supply capability of the installation must be
checked and a minimum fuse rating of 25
Amps must be used.
13 Pin Connection
ATC can be connected via the 13-Pin plug and
requires power on Pins 9 (permanent supply)
and 13 (earth). Please ensure that your vehicle
towbar is correctly connected to ensure
correct ATC operation. This can be checked
with the use of a multimeter.
Operating instructions
After coupling the caravan correctly to the
towing vehicle, connect the 12N & 12S plugs
or the 13 Pin plug to the towbar.
Upon connection, ATC will carry out an initial
self test and the LED light on the front fairing
will light up RED. During the self test, the
sound of the push rod moving inside ATC can
be heard. When the self test is complete, the
LED will turn GREEN or flashing GREEN to
signal that ATC is active. If the LED does not
change to green, then ATC is not functioning
correctly. The table provided on page 206
details what to do in this case. Prior to
commencing any journey, ensure that the
AL-KO ATC CONTROL SYSTEM
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