ESC
User Manual
4
LED Status Light
ESC Module
Flashing Red Status Light
If the ESC status light flashes red constantly each second, disconnect the ESC before driving by unplugging
the connector to the ESC under the caravan. Contact AL-KO and return the ESC module for repair or replace-
ment.
If the ESC status light flashes red very quickly occasionally when the ESC has no power, this is feedback from
the brake controller and is not a problem.
Status Light is OFF
No power to the ESC
Check that the 12 pin connector is plugged in to the tow vehicle. Reconnect the 12 pin connector.
Check that ESC connector is plugged into the ESC under the
caravan.
Reconnect the ESC connector.
No power supplied from tow vehicle. Check for 12 volts at the
12 pin connector & check fuse (If fitted).
Repair any damaged cables.
Clean the 12 pin connector.
Replace fuse if required.
Replace cables and/or connector if required.
No power at ESC connector. Check for 12 volts at ESC connector. Clean the connector.
Repair any damaged caravan cables or
replace if necessary
Check that the cables are not damaged. Repair or replace the cables if necessary.
LED status light is faulty
Check voltage supplied to the light is two volts Replace LED status light
Flashing Green Status Light
A flashing green light indicates that the start up test has been completed but the ESC has not yet detected
any movement to confirm that the sensors are working. The ESC will switch to solid green once the ESC
detects movement. If the flashing green light continues constantly, contact AL-KO.
ESC Layout
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