To carry out systematic checks of the condition of the fuel injection system or to eliminate the identified malfunctions, special measuring instruments are required. They are usually very expensive and are available only in specialized workshops. For this reason, this manual only covers the basics for performing a check on the ignition and fuel injection systems.
1. Check the condition and voltage of the battery, see the relevant chapter.
2 Check all fuses, see relevant chapter.
3. Disconnect all plugs and plug connections of the respective system and then reconnect them. Check the condition of the plug connections and fastening of the wires in the engine compartment.
4. Check the fit of the wire terminals «masses» (-), as well as their contacts.
5. Check up a condition and tightness of hoses and pipelines. Make sure there are no porosities or cracks. Tighten loose connections.