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Can you use your key to diagnose your cars problem?

Updated: 10/20/2022
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Lisagayep

Lvl 1
16y ago

Best Answer

well yes and no.you use the key to turn the ignition to the acessory posistion( the furthest you can turn the ignition without starting the car)..you use a paper clip or the lil test probe or a code scanner, connected to the test dimm right below your steering column or somewhere in that vacinity . you connect the test connector ( you can buy it at autozone or advance for like a buck )or a paper clip to the a and b terminal on the test dimm..or you plug in the scanner ,,then you turn the ignition to the run posistion ,,and your check engine will start flashing codes with flashes and pauses soon ..it will give you the codes in sets of 3 then go to the next code..first code will be a 12 one (one flash ,,then a short pause ..then 2 more flashes ) this is a welcome code ..then after it does that 3 times ..it will start giving you the trouble codes if there is any..when it goes back to giving you the code 12 again . that means it has given you all the trouble codes .and is restarting ..then you can turn off the ignition ,,and unplug the paper clip or test pin connector or whatever you are using)..remember it will flash the check engine or service engine soon light on your dash ..then you just write down the codes as it gives them to you ..then you can go online and search trouble codes ..go to a page and look up your codes and it will tell you ,well give you an idea what is wrong...examples .starts off with a 12 ..one flash then a pause then 2 flashes..repeats it 3 times .then gives you lets say for example code .44 four flashes ..pause ..then four more flashes ..repeats itself 3 times ..then goes to a 56 five flashes then a pause then six flashes..then goes back to a code 12 (welcome or handshake code)..test is done at this point it ,,will keep repeating the procedure 3 times so if you missed a code or dont think you wrote it down right you have 2 more times because it goes through the codes \3 total times ..hope this helps you a lil bit

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