Safety Precautions

Safety Precautions

Note the following when working on the fuel system:

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

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

- Procedures before opening high pressure fuel injection system.

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 injection and ignition system wiring or tester cables.

• Only clean engine with ignition switched off.

• If the connectors were disconnected and the engine was started, then the following faults are stored in the engine control modules: generate readiness code in guided functions.

CAUTION!
Risk of destroying electrical components when battery is disconnected.

• Follow the measures when disconnecting battery.

• Always turn off the ignition before disconnecting the battery.

- Disconnect battery.

Note the following when working on the cooling system:

CAUTION!
Risk of scalding due to hot steam and hot coolant.

• When the engine is warm the cooling system is under pressure.

• To reduce pressure, cover coolant reservoir cap with cloth and carefully open.

If it is necessary to use testing and measuring devices on road tests, observe 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 on the rear seat operate them.

Before Opening High Pressure Fuel Injection System

CAUTION!
• The fuel injection system is separated into a high-pressure section where the pressure is a maximum of approximately 120 bar and a low-pressure section where the pressure is approximately 6 bar.

• Before opening high pressure area, fuel pressure must be reduced to a residual pressure of approximately 6 bar.