Fuel Delivery and Air Induction: Description and Operation

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 the engine compartment must only be secured with spring type clamps. The use of clamp or screw type clamps is not permissible.

• For the electronic 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 will damage the oxygen sensor.

• The vehicle has a crash fuel shut-off. It reduces the risk of fire in a collision because the fuel pump relay switches the fuel pump off.

• This setup also makes it easier to start the engine. When the drivers side door is opened, the fuel pump is activated for 2 seconds so that pressure builds in the fuel system, observe the safety measures. Refer to => [ Safety Precautions ] Fuel Supply.