LR3/Disco 3
Heat protection
Always ensure that heat shields and protective sheathing are in good condition; replace if damage is evident. Particular
care must be taken when routing hoses close to hot engine components such as the exhaust manifolds and exhaust gas
recirculation (EGR) pipes. Hoses will relax and deflect slightly when hot, ensure this movement is taken into account
when routing and securing hoses.
Electrical Precautions
General
The following guidelines are intended to ensure the safety of the operator whilst preventing damage to the electrical and
electronic components of this vehicle.
Equipment
Prior to commencing any test procedure on the vehicle, ensure that the relevant test equipment is working correctly and
that any harness or connectors are in good condition. It is particularly important to check the condition of all plugs and
leads of mains operated equipment.
Polarity
Never reverse connect the vehicle battery and always ensure the correct polarity when connecting test equipment.
High voltage circuits
Whenever disconnecting live ht circuits, always use insulated pliers and never allow the open end of the ht lead to contact
other components, particularly ECU's.
Vehicles fitted with Bi-Xenon headlamp bulbs
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Safety goggles and gloves must be worn.
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Ensure that headlamps are switched off before removing bulbs.
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Do not touch the glass portion of the bulb.
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On no account should headlamps be switched on with the bulb removed from the headlamp.
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Bulb testing may only be carried out with the bulb fitted in the headlamp.
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Bulbs must be disposed of in accordance with the local authority bye-laws.
Connectors and harnesses
The engine compartment of a vehicle is a particularly hostile environment for electrical components and connectors.
Always observe the following:
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Ensure electrically related items are dry and oil free before disconnecting/connecting test equipment.
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Ensure that disconnected multiplugs and sensors are protected from any possible oil, coolant or other liquid
contamination. Any such contamination could impair performance or lead to component failure.
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Never force connectors apart or pull on the wiring harness.
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Always ensure locking tabs are disengaged before disconnecting multiplugs etc. and ensure that correct
orientation is achieved before connection.
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Ensure that any protection covers, insulation etc. are replaced if disturbed.
WARNING: The following precautions must be observed as failure to comply may result in exposure to
ultra-violet rays, severe electric shock, burns or risk of an explosion.
