General Warnings Regarding The Electrical System - Iveco NEF Series Repair Manual

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PREMISE
7
NEF G-Drive Stage IIIA SERIES

GENERAL WARNINGS REGARDING THE ELECTRICAL SYSTEM

When having to operate on the electrical/electronic circuit, disconnect the batteries from the circuit, disconnecting the
! chassis ground cable first of all from the negative terminal of the battery.
Before connecting the batteries to the system, make sure that the system is suitably insulated.
Disconnect the external recharging apparatus from the public utility network before removing the apparatus pins from
the battery terminals.
Do not cause sparks to verify the presence of voltage in a circuit.
Do not use a test lamp to verify circuit continuity, but proper control equipment only.
Make sure that the wirings of electronic devices (length, type of cable, location, strapping, connection of screen braiding,
grounding, etc.) conform with the FPT system and that they are carefully restored after repair or maintenance work.
Measurements on the ECUs, jack connections and electrical connections of components must be done only on regular
test lines, with special jacks and jack bushings. Never use improvised equipment like metal wires, screwdrivers, pins or
similar. This may not only cause short circuits, but also damage the jack connectors, resulting in poor contact.
Do not use fast chargers to start up the engine. Start up must only be performed with either separate batteries or special
truck.
Incorrect polarisation of voltage supply to the electronic control units (for example, incorrect polarization of batteries)
may lead to their destruction.
Disconnect the batteries from the system during their recharging with an external apparatus.
On connecting, only screw connector (temperature sensors, pressure sensors, etc.) nuts to the prescribed tightening
torque.
Isolate the circuit prior to disconnecting the junction connector from an electronic control unit.
Do not directly supply current to components served by electronic control units with nominal vehicle voltage.
The cables must be routed in such a way as to be parallel to the reference plane, as close as possible to the chassis/body.
Upon completing work on the electrical circuit, restore the electrical connectors and wiring as originally provided.
Print P4D32N009 E Base - March 2014