ATC LOCK-OUT CIRCUIT
ATC lock-out circuit
For flawless operation of the ATC in the case of caravans with independent 12 V power supply
(e.g. on-board battery, autonomous battery pack), a lock-out circuit must be installed between
the distributor box of the caravan and the ATC.
Article number of retrofit package: 1224853
OPERATION
Before the trip
1. Couple caravan or trailer.
2. Insert 13 pole trailer cable on the towing vehicle.
3. Check ATC LED
ATC starts a self test – LED shines red for approx. 3 seconds.
LED switches to green, car and trailer is now ready to drive.
4. Check caravan lighting.
LED display
Display
Green
Flashing green
Red
Flashing red
Off
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Status
ATC active
ATC self-test
ATC inactive
ATC stopped
ATC deenergised
Explanation
Ready
Ready. The self-test is termina-
ted when driving starts (see also
"Fault rectification").
Fault. You can continue driving
without problems. Follow instruc-
tions in "Fault rectification"
Serious fault. ATC can brake con-
tinuously. Stop driving immedia-
tely! Follow instructions in "Fault
rectification".
ATC is deenergised or defective
(see also "Fault rectification").
en
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