93 Trooper CEL Illumination
 

I'm getting an illumination of the Check Engine light only after the engine has warmed up and push on the gas at all while driving. At idle or coasting the light goes off. Also, I cannot find the plug to pull the codes, the only plugs I see under the dash are for the clutch switch according to the wiring diagram in my repair manual. There are no data link cables or connectors under the dash that I can find.

Any ideas?

Tony

EDIT: it's a 3.2L DOHC Auto 4x4