Ways to Troubleshoot a Ford EEC-IV Fords Using a Verify Engine Light1Put your important in to the ignition and start the vehicle. Let the vehicle idle till the engine is totally warmed. Wait five to 10 minutes, or rev the engine at 2000 rpm for two minutes.2Turn the engine off and engage the parking brake. Ensure that the air conditioning is switched off fully.3Open the hood from the vehicle and find the Self Test Outlet. The location will differ by model of Ford. The STO is trapezoidal in shape and capabilities six ports. Nearby might be the Self Test Input. It's going to function only 1 port.4Place a jumper wire in to the self test outlet's grounding port.
This can either be the best slot on the top row, or the left-most slot on the bottom row. Consult the owner's manual to be specific you happen to be utilizing the best slot.5Turn the ignition essential to "On." The codes might be relayed by the check engine light flashing. Count these flashes. The trouble codes themselves are either two or three digit numbers. There will probably be a short pause between numbers Auto diagnostic tools. For example, code 14 will have the examine engine light flash when; then there will probably be a little pause, and subsequent the light will flash 4 much more times. Longer pauses in between lights indicate the end of 1 trouble code, plus the beginning of one more. Write down all of the codes.6Turn the Ford off Obd2 scanner.
For EEC code definitions, seek the advice of one from the several OBD-I web-sites out there.Fords With out a Examine Engine Light7Start the automobile and let the engine warm. Then, turn the engine off.8Set the volt meter to read amongst 0 and 15 DC volts. Connect your volt meter's good result in the postive terminal on the Ford's battery. Then, connect negative lead to the self test outlet's grounding slot.9Connect the self test outlet's signal return slot for the self test input having a jumper wire.10Turn the Ford "On," but usually do not commence the engine. Count the times the needle sweeps. There will likely be a tiny pause in between numbers within the code. Code 14, for instance, will have one particular needle sweep, followed by a pause after which 4 more needle sweeps. Lengthy pauses indicate the starting and finish of a brand new difficulty code.
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