Initial Inspection and Diagnostic Overview

On Board Diagnostics

• The engine control module is equipped with a DTC memory.

• The DTC memory should be checked before every repair or every fault finding session.

• Check the vacuum hoses and connections (unmetered air).

• Fuel hoses in engine compartment must only be secured with spring-type clips. The use of clamp or screw type clips is not permissible.

• For the electric components to work properly, a voltage of at least 11.5 Volts is required.

• Do not use sealants containing silicone. Particles of silicone drawn into the engine, will not be burnt in the engine and damage the oxygen sensor.

• The vehicles have a crash fuel shut-off. This function reduces the risk of fire in during a collision because the fuel pump relay switches the fuel pump off.

• This setup also makes it easier to start the engine. The fuel pump runs for approximately 2 seconds when the driver door opens to build pressure in the fuel system. Refer to => [ Before Opening High Pressure Fuel Injection System ] Service and Repair.