Warm-up cycle

The warm-up cycle is the time which the engine requires to reach operating temperature. To fulfill the 'warm-up cycle' condition, the engine temperature on start-up must not be higher than a specified value (currently 44°C). The engine operating phase has to be long enough to produce a certain temperature increase (currently 21°K, but the temperature reached must be at least 54°C). The warm-up cycle condition is needed to decrement (count down) the fault erasing counter in the event of faults that have been recognized as "healed" (see section entitled 'FAULT HEALING ').