Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: weas on February 21, 2011, 04:01:02 PM

Title: check engine light
Post by: weas on February 21, 2011, 04:01:02 PM

just did an engine swap, and everything seems good,  BUT i am getting no check engine light.  I know it sounds like i have no problem, but i have not yet hooked up safty switches tranmision wiring or secondary o2 sensors ( and a few other things). I should be throwing a cel code somewhere.
Ecu wiring harness and engine is all from a 96 zj.  Due to the wiring harness the odbII conector did not survive, and i can't find a good wiring scematic to trace out the wires.  This year and ECU can output codes on the check engine light.

What i am hoping someone can tell me is what wire from the ECU connects to the check engine light. I just want to double check that i have it correct. Or if mabye someone has a link or FSM (wiring diagram) for a 96 zj???

I know this is a very specific request, but i figure it can't hurt to ask befor i drop money on a fsm that might or might not help

thx

Jon

Title: Re: check engine light
Post by: CatSplat on February 21, 2011, 04:11:10 PM

Jeeps Limited (http://www.jeepslimited.com) has the downloadable FSM for the ZJ, see if that gets you on the right track.

Title: Re: check engine light
Post by: cLAY on February 21, 2011, 04:49:25 PM

The CEL should flash on startup and then go out. Finish hooking up the rest of the stuff and see if it runs good.

Title: Re: check engine light
Post by: vantagetes on February 22, 2011, 06:00:19 PM

May sound stupid but it might be worth checking the check engine light bulb too!