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Oldsmobile Cutlass Supreme

How can you read the codes for a 1986 Cutlass without hooking it up to a Dianostic Machine you know there is a way to short across two of the terminals and get the reading but can't figure it out?

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Wiki User
June 08, 2006 4:16AM

jumper wire between a&b terminal on your aldl conector. turn ignition on and watch your chech engine light, this will flash once and then twice. this is the #12 and means that system is working okay. It will flash this 3 times and then it will start flashing trouble codes. IF YOU HAVE AN ADVANCE AUTO PARTS STORE LOCATED BY YOU, YOU CAN GO AND THEY HAVE A MACHINE THAT THEY CAN USE TO PULL CODES FROM YOUR CAR AND IT IS 100% FREE OF CHARGE TO GET DONE.