Division 2.2.1.18.9

F1Tractors towing vehicles of categories R or S which can only comply with the braking performance requirements of the service braking system, parking braking system or automatic braking system with the assistance of energy stored in a hydraulic energy storage device shall be equipped with an ISO 7638:2003 connector in order to be able to indicate the low level of stored energy on the towed vehicle, received by the latter, as laid down in point 2.2.2.15.1.1 by the separate warning signal via pin 5 of the electrical connector conforming to ISO 7638:2003 specified in point 2.2.1.29.2.2. (see also point 2.2.2.15.1). The ISO 7638:2003 connector may be used for 5 pin or 7 pin applications, as appropriate.