Iveco NEW DAILY, Instructions Manual

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NEW DAILY
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ELECTRONIC SUB-SYSTEMS
ELECTRONIC SUB-SYSTEMS
5.4 ELECTRICAL SYSTEM: CURRENT INTERVENTIONS AND DRAWS
13
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Printed 603.95.789
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1 Ed. - Base 02/2014
Disconnecting electronic control units
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Operations which do not comply with the instructions specified by IVECO or carried out by non
qualified personnel can cause severe damage to on-board systems which is not covered by war-
ranty. Driving safety, reliability and good operation of the vehicle could also be affected.
Follow the instructions below carefully before disconnecting an electronic control unit:
●
turn the ignition key to OFF and remove it;
●
switch off the additional heaters and wait for the end of the cooling down cycle (the warning light of the corresponding key
will go out);
●
open the TGC (Main Current Contactor);
●
isolate the battery by disconnecting the battery cables: disconnect the negative terminal first followed by the positive terminal;
●
disconnect the control unit.
Repositioning electronic control units
IVECO recommends avoiding modifications which entail the repositioning of the electronic control units. However, if repositioning
is unavoidable, follow the instructions below:
●
the electronic control units must be positioned on the chassis or in the cab and secured with a fastening similar to the original
one (i.e. bracket);
●
in order to avoid any malfunctions the electronic control units must not be turned in relation to the chassis and must maintain
the original orientation (e.g. to avoid water ingress).
●
electronic control units must not be fitted on the counter chassis;
●
the cover must always be refitted;
●
avoid subjecting electronic control units to knocks from debris and stones from the road when travelling.
5.4 ELECTRICAL SYSTEM: CURRENT INTERVENTIONS AND DRAWS
General information
Vehicles are set to function normally with a 12 V electrical system.
The chassis represents the grounding (it acts as a current return conductor between the components located on it and the bat-
tery power source/alternator) and it is connected to the negative pole of the battery and components, if an isolated return is not
provided for this.
When installing additional equipment or additional circuits, the following indications must be taken into account and, depending on
the complexity of the operation, there must be proper documentation (e.g. wiring diagram) to match that of the vehicle.
The use of cables and connections with colours/codes identical to those used on the original vehicle makes installation correct and
facilitates any repair work.
For effective and proper use of the electrical system, specific connection points for additional equipment have been prepared. This
was necessary to exclude any type of alteration of the basic design, so as to ensure its functional integrity and therefore maintain
the vehicle guarantee.
Note For more detailed information on the vehicle's electrical system of, refer to the NEW DAILY Repair Manual, printout No.
603.95.723.
This manual is available at the Service Network and can also be obtained from Sales Agencies.
Precautions for work on the system