Multiport Fuel Injection

Safety Precautions

If special testing equipment is required during a road test, note the following:

CAUTION!
Distraction and improperly secured test equipment can lead to accidents.

There is a risk that the passenger airbag could deploy in a collision.

• Operating testing and measuring equipment while driving creates a distraction.

• There is an increased risk of injury due to unsecured testing and measuring equipment.

• Always secure testers on the rear seat with a strap and have a second person in the rear seat operate them.

To reduce the risk of personal injury and/or damage to the fuel injection and ignition system, always observe the following:

CAUTION!
• Fuel system is under high pressure! Before opening the high pressure components of the fuel injection system, pressure must be relieved to a residual pressure. Refer to => [ High Side Fuel Pressure, Reducing ] Service and Repair.

• Then wrap a clean cloth around the connection and relieve the residual pressure by carefully loosening the connection.

CAUTION!
• The battery must only be disconnected and connected when the ignition is switched off, since the Engine Control Module (ECM) can otherwise be damaged.

• Observe the safety precautions when disconnecting the battery. Refer to.

• Because of safety reasons, the fuse - B in the relay and fuse holder, in the right side of the luggage compartment - for the fuel pump control module must be removed before opening the fuel system if the battery is not disconnected because the fuel pump is activated by the driver's door contact switch.





• Individuals with a pacemaker must not stay in the danger area of high voltage systems, for example, ignition system, xenon light.

• Fuel lines must not be opened when engine is running.

• Only disconnect and reconnect the wires for the injection and ignition system, including test leads, when the ignition is switched off.

• If the engine is to be cranked at starting RPM without starting (for example, for compression testing), disconnect the connectors from the ignition coils and remove the fuse for the electric fuel pump.

• It is possible that the control module will recognize a malfunction and store a Diagnostic Trouble Code (DTC) during some tests. Therefore after completing all checks and repairs the DTC memory must be checked and if necessary erased.

• Cleaning the engine should only be performed with the ignition switched off.

• The battery must only be disconnected and connected with the ignition is switched off, since the Engine Control Module (ECM) can otherwise be damaged.