I have a 1990 pickup 3.0 v6 and need to find out if the computer can be tested. Still have no spark and have limited possibilities to the igt or igf wires from igniter to ecu, or just the one circuit in the ecu that controls the spark. This has probably been asked before and I apologize for making a double but could not find anything like it here. Any help would be great and thanks in advance.

 

find someone with a car like urs and put ur computer in there car and try to start it, other then that just testing for voltage is the only way that i know of. might be able to call toyota and ask them they might have a set up for testing ecu's have u checked the wires from igt to computer to make sure its not damaged?

 

Well we checked the wires from the igniter to the ecu, and everything is good there. I have never heard of it but the one circiut for spark is out. Mystery solved!!!!!!!!!!