check engine

Does anyone know how to do the diagnostic check for the check engine light. i have a 99 jeep wrangler. i thought you had to turn you ignition on, off, on, off, on and wait for light to flash but not working. just curious

Yea it’s something like that… and then you watch how many times the check engine light will blink. Gene knows how it works exactly.

ok i will keep trying. or i will just run by the autozone after work and have them hook it up. i was just curious and hopeing to save a trip outta my way. thanks

If I remember correctly it doesn’t work for some years of TJs. I can’t remember which years though.

I thought that trick stopped working after 96. I know it does not work for 97+ Grand Cherokees. I have a code reader at home.