|
Servicing Motronic injection system
Safety precautions
Observe the following points if test and measuring instruments are required during a test drive:
Warning:
-
◆ Test equipment must always be secured on the rear seat and operated from there by a second person.
-
◆ If test equipment is operated from the front passenger's seat, the occupant could be injured by the passenger's airbag in an accident.
To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted:
-
◆ Always switch off the ignition before connecting or disconnecting injection or ignition system wiring or tester cables.
-
◆ To operate the engine at starting speed without actually starting it (for example, in order to test compression), unplug the connectors from the output stages for the ignition coils and also the connectors on the injectors.
-
◆ During some of the tests the control unit may identify and record faults. The fault memory should therefore be interrogated and (if necessary) erased after completing the tests and any repair work that may be required.
-
◆ Always switch off the ignition before cleaning the engine.
-
◆ Always switch off the ignition before connecting or disconnecting the battery, otherwise the engine control unit may be damaged.
Warning!
The fuel system is pressurised. Before loosening hose connections or opening the test connection (to measure fuel pressure), place a cloth around the connection. Then release pressure by carefully pulling off the hose or cap.
|
