Four Different Conditions For Diagnostics
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Trip
When all diagnostic functions have been gone through.
Drive cycle
Begins 15 seconds after the engine starts and finishes when the engine is switched off.
Warm-up cycle
Begins when the engine starts and ENGINE coolant temperature (ECT) is below 40°C (104°F) and finishes when the engine temperature is above 84°C (183.2°F).
Time
Some diagnostics are carried out a set amount of time after a particular occurrence (for example when vehicle speed is above 23 km/h (14.3 mph)).