To avoid injury to persons carrying out these works and / or damage to the electronic ignition system, when carrying out repairs on vehicles with such a system, pay attention to the following rules.
When the engine is running or starting, do not touch the high voltage wire with your hands and do not tighten it with your hands.
Only when the ignition is switched off, disconnect the wires of the ignition system from the terminals, in particular the multi-pin plug of the engine control unit.
Each high voltage electrical circuit must be loaded with a resistor having a resistance of at least 2 kOhm, i.e. when the ignition is switched on, the contact tips of the spark plugs must be mounted.
Only when the ignition is off, connect and disconnect measuring devices from the wire terminals (tachometer / ignition tester).
To terminals 1 (–) and 15 (+) ignition coils, do not connect a test light.
If the vehicle needs to be tested for flammable sparks, this should only be done using a spark plug directly in the cylinder. At the same time, ensure good contact between the spark plug and the car body. Hold the contact tip of the spark plug or high voltage wire not with your hand, but with well-insulated pliers in relation to the car body (e.g. to the engine block).
Before determining the starter speed, check the compression pressure, switch off the ignition and remove the plug (A) on HFM controller or crankshaft position encoder (L5) on the PMS controller.
The connecting elements of the primary circuit conduct voltages up to 400 volts! It is therefore always necessary to connect the clamps/core pack to the car body.
For electric and spot welding, disconnect the electrical on-board network from the battery terminal.
Wash the engine only with the ignition off.
Persons with a pacemaker should not operate the electronic ignition system.