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6
ELECTRIC/ELECTRONIC SYSTEM
GENERAL WARNINGS
General conditions for laying electric circuits
- Engine off
- Ignition switch off
- Handbrake engaged
- Neutral gear
- Fluids at normal level
Do not ever disconnect the system batteries and do not open the general current switch with the i.c. engine running.
Do not start the engine without first connecting the batteries in a permanent manner.
!
- Before doing any work on the vehicle chock the wheels appropriately.
- Do not use quick chargers to start the engine. Starting must only be carried out with separate batteries or with the special
trolley.
- Make sure that the polarity on the battery terminals is correct when starting from an auxiliary trolley.
- The incorrect polarisation of the power voltage of electronic control units (for example incorrect polarisation of the batteries)
may lead to their destruction.
- When needing to disconnect the battery from the system, firstly always disconnect the battery negative cable that goes to
the engine from the negative terminal of the battery itself.
- Before connecting the battery to the system, make sure that it is well insulated.
- When seeking faults, insert a wander fuse between the battery negative terminal and the engine earth cable.
- Before removing any electrical and/or electronic components, disconnect the ground cable from the negative terminal of
the battery.
- Disconnect the battery from the system when charging it with external equipment.
- Disconnect the external charging equipment from the mains before removing its grippers from the terminals of the battery.
- Do not insert or remove the connector of electronic control units with the power on.
- With temperatures above 80 °
- During electric welding work disconnect the connectors of electronic control units.
Key storing procedures are affected by electromagnetic noise (mobile phones, etc.). Therefore, during key storing:
!
1. Pay attention that there are no noise sources in the cab or near keys.
2. Keys not inserted in panel must be at least at 1 metre distance.
Measurements in electronic control units, plug connections and electric connections to components may be carried
out only on appropriate testing lines, with special plugs and sockets. Never use improper means such as metal wires,
!
screwdrivers, clips or the like. In addition to the danger of a short circuit, damage to the plug connectors may also result
and this would subsequently cause contact problems.
Base - March 2006
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C (drying ovens) remove the electronic control units
D
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4
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URO
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