Pattern "B"
In drive cycle pattern "B", EGR and fuel system components are monitored. With engine warm, start engine. Let idle briefly, then drive vehicle up to legal freeway speeds for several minutes. Return to idle and turn engine off.
In drive cycle pattern "B", EGR and fuel system components are monitored. With engine warm, start engine. Let idle briefly, then drive vehicle up to legal freeway speeds for several minutes. Return to idle and turn engine off.