This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge solenoid Open and the EVAP canister vent solenoid Closed. This allows vacuum to be applied to the EVAP system.
Many people make the claim that Man has a tailbone left over from evolution. This page will examine these claims and show that mans tailbone is nothing of the sort... and rather than being a left over from evolution, the tailbone has a distinct role and purpose. The following is an excert from:
â¢ a post-anal tail (in most other animals with a complete digestive tract, the anus is the posterior-most point of the body). The post-anal tail allowed for swimming in ancestral chordates. Class ChondrichthyesâCartilaginous Fish (Photo atlas, p. 189-194) This was the first group of vertebrates to evolve jaws and paired appendages (e.g., fins). Vertebrate jaws evolved from skeletal supports of the pharyngeal slits. These two adaptations allowed for a greater capacity for movement, as well as the exploitation of new food resources. As the name implies, cartilaginous fish have a skeleton made out of