Visually check the vehicle for signs of damage to high voltage electrical components or cabling (usually coloured orange). High voltage systems should be isolated i.e. the power disconnected and secured such that it cannot be inadvertently switched back on. Testing should be done to ensure no systems are energized before undertaking any work. Always isolate and lock off the source of electricity and in accordance with manufacturer’s instructions. You must always test and prove that any high voltage cable or electrical component is dead prior to carrying out any work on it.
Even when isolated, vehicle batteries and other components may still contain large amounts of energy and retain a high voltage. Only suitable tools and test equipment should be used. These must include electrically insulated tools and equipment.
Some electronic components may store dangerous amounts of electricity even when the vehicle is off and the battery isolated. Refer to manufacturers data on how to discharge stored energy.
There may be circumstances (e.g. after collision damage) where it has not been possible to fully isolate the high voltage electrical systems and to discharge the stored energy in the system. Refer to the manufacturer’s instructions about what controls measures should be implemented before attempting to carry out further remedial work.