how to test the PCM
I posted in the past about the stinky YJ that I got out of a farm field. I am happy to report that the smell is gone.
My problem is I cant get spark. I have tried the following.
94 YJ 2.5
plugs and wires
distributer cap and rotor
checked coil both primary and secondary res check out
replaced the crank pos sensor
checked all under hood fuses
Replaced emergency shut off relay
I am going down the road of doing a Continuity check of all the wires from the under hood fuse block to the PCM and coil.
All I can see that is left is the PCM.
How can I check if the PCM is working. I tried to put it in self Diagnostic mode but none of the idiot lights came on except the brake light. The jeep dealer said they cant do a diagnostic without the PCM attached to the truck. The car is in a million pces in my garage.
Any help would be appreciated!!
Last edited by wr400f; 11-12-2008 at 06:45 PM.