5-20 SPECIAL INSTRUCTIONS FOR ELECTRONIC SUBSYSTEMS E UROCARGO Euro 4/5 Electrical system: modifications and drawing---off power 5.8 Electrical system: modifications and drawing-off power 5.8.1 General Information The vehicles are fitted for operation with a 24V electric system for normal use, the chassis frame stands for ground (it acts as a current return conductor between the components situated on it and the source of energy, batteries/alternator), it is connected to the negative pole of the batteries and components, if there is not an isolated return for this.
The installation of auxiliary equipment or circuits added by the bodybuilder must take account of thefollowing indications.Depending on the complexity of the work, there must be suitable documentation (e.g. wiring diagram) to be included together with that of the vehicle. Using the same colours/codes for the cables and connections as those used on the original vehicle makes the installation more cor- rect and facilitates any repair operations. Precautions The vehicles are equipped with sophisticated electric/electronic systems that control their operation. Work on the system (e.g.
removing set of wiring, construction of additional circuits, replacing equipment, fuses, etc.) not done in compliance with IVECO directions or done by unqualified personnel can cause serious damage to the vehicle’s systems (control units, wirings, sensors, etc.), jeopardizing driving safety, proper operation of the vehicle and causing significant damage (e.g. short circuits with possible fire and destruction of the vehicle) not covered by contractual warranty. No modifications or connections are allowed to the data connection line between control units (CAN line), where any change is strictly prohibited.
Any troubleshooting and maintenance operations can be carried only by authorised personnel, with IVECO ap- proved equipment. It is always necessary to isolate the batteries before doing any work on the electric system, disconnecting the power cables, first the negative pole then the positive one. Use fuses with the prescribed capacity for the specific function, never use fuses of greater capacity; make the replacement with keys and services disconnected, only after eliminating the trouble.
Restore the original conditions of the wirings (routes, protection, clamps, absolutely preventing the cable from coming into contact with metal surfaces of the structure that can affect its integrity) if any work has been done on the system. For work on the chassis frame, to protect the electric system, its appliances and the ground connections, respect the precautions stated in points 2.1.1 and 2.3.4. Electrical system: modifications and drawing-off power Base - January 2008 Print 603.93.431