Homologation Procedure (page 2 of 2)

Permanently monitored systems are monitored according to temperature immediately after startup and may in the event of malfunctions (e.g. HO₂ sensor) result in the MIL illuminating straight away. The following are permanently monitored throughout the drive cycle:

• Misfire detection
• Fuel system (duration of injection)
• All electric circuits for emission-related components

Systems which are monitored once per driving cycle will only result in a fault being registered after the corresponding operating conditions have been completed. It may not be possible for the system to perform a complete check if the engine is only operating for a brief period before shutting down again. The following components are monitored once per driving cycle:

• HO₂ Sensor function
• Catalytic converter function