il ▁used ▁is ▁the ▁E - Core ▁design . ▁This ▁ign ition ▁co il ▁design ▁is ▁more ▁efficient ▁than ▁the ▁older - style ▁cyl inder - sh aped ▁ign ition ▁co ils . ▁ ▁The ▁E EC - IV ▁system ▁has ▁more ▁di agnostic ▁capabilities ▁than ▁previous ▁E EC ▁systems . ▁Early ▁E EC - IV ▁equ ipped ▁cars ▁don ' t ▁have ▁the ▁cap ability ▁to ▁send ▁sensor ▁data ▁through ▁the ▁di agnostic ▁conne ctor ▁to ▁a ▁scan ▁tool . ▁However , ▁there ▁are ▁K O E O ▁( Key ▁On , ▁Engine ▁Off ) ▁and ▁K O ER ▁( Key ▁On , ▁Engine ▁Running ) ▁self - tests , ▁and ▁a ▁Cont inu ous ▁Mon itor ▁( wig gle ) ▁test , ▁a ▁feature ▁to ▁help ▁test ▁the ▁w iring ▁connections ▁to ▁various ▁sens ors / act u ators ▁by ▁w igg ling ▁the ▁w ires ▁of ▁the ▁component ▁in ▁question . ▁By ▁the ▁early ▁ 1 9 9 0 s ▁certain ▁Ford / Lin coln / Mer cur y ▁models ▁had ▁sensor ▁data ▁streaming ▁cap ability . ▁The ▁feature ▁is ▁called ▁D CL ▁( Data ▁Communic ations ▁Link ). ▁These ▁models ▁have ▁ 2 ▁additional ▁data ▁bus ▁w ires ▁to ▁the ▁E EC - IV ▁di agnostic ▁conne ctor ). ▁ ▁The ▁E EC - IV ▁computer ▁was ▁built ▁around ▁an ▁Intel - des igned ▁ 8 / 1 6 ▁bit ▁processor ▁called ▁the ▁ 8 0 6 1 . ▁ ▁This ▁chip ▁was ▁never ▁sold ▁commer cially , ▁but