Initial Inspection and Diagnostic Overview

On Board Diagnostics

• The Engine Control Module (ECM) is equipped with On Board Diagnostics (OBD). Before repairs such as fault finding, check the Diagnostic Trouble Code (DTC) memory first. Also the vacuum hoses and connections must be checked (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. It reduces the risk of fire in an accident because the fuel pump relay switches the fuel pump off.

• This setup also makes it easier to start the engine. When the driver-side door is opened, the fuel pump is activated for 2 seconds so that pressure builds in the fuel system, observe safety measures. Refer to => [ Test and Measuring Instruments during Test Drive ] Test and Measuring Instruments During Test Drive.