Multiport Fuel Injection (MFI)

Safety Precautions

Note the following when working on the fuel system

There is a risk of injury because the fuel is under very high pressure.

• Before opening high pressure components of the fuel injection system, pressure must be relieved to residual pressure.

• To reduce residual pressure, lay a clean cloth around the connector and carefully loosen connector.

- Procedure before opening high pressure fuel injection system => [ Releasing Fuel Pressure on High Pressure Side ] Service Precautions.

Burn risk due to escaping fuel.

• Because the transfer Fuel Pump (FP) (G6) runs briefly when the battery is connected and the driver's door is opened, the voltage supply to the (G6) must be disconnected before opening the fuel system.

- Remove fuse for transfer Fuel Pump (FP) (G6) from fuse holder in the left E-box plenum chamber.

To prevent personal injury and damage to the injection and ignition system, observe the following

• The ignition must be switched off before connecting or disconnecting the ignition system wiring or tester cables.

• Only clean engine with ignition switched off.

• If electrical connectors were disconnected, faults are saved in ECM:

- Connect vehicle diagnosis, testing and information system (VAS 5051).

- Start "Guided Functions" operating mode.

- Generate readiness code in ECM.

Risk of destroying electrical components when battery is disconnected.

• Observe measures when disconnecting battery.

• Only disconnect battery with ignition switched off.

- Disconnect battery.

If it is necessary to use testing and measuring devices on road tests, observe the following

There is a risk of injury from the passenger airbag deploying in an accident.

• Always secure testing and measuring equipment on the rear seat and have a second person operate it from there.