Volvo Repair: 89 Volvo 740 GLE not getting spark or gas, volvo 740 gle, volvo repair

Question
I tested the codes and didn't  get anythin out of them, I am now gettin gas but no spark. I have tested the gadget numerous times but no luck. Thanks so much for the help.
Followup To
Question -
I have a 1989 740 GLe volvo. A while ago my father had been looking inside the engine compartment and had seen that the PCV valve had a broken vacume hose piece on it which we recently fixed. He had also seen a weird little computer gadget on the drivers side under the hood that looks like a test. He had taken the top clip off of it to see what it was and after that it has not been able to start since. We had asked the volve dealer what that thing was but he said he'd have to take a look at at and that he didn't know what it could be. It isn't in the volvo repair manual that we have either.It says volvo right on it so i assume it is a volvo part but i didn't think thats what it was. I have been doin several checks on it since that happened and i pulled the spark plugs to see if it was gettin spark and it was at first. Then i checked to see if it was getting gas from the injectors and then they weren't workin so i assumed that was the problem. I heard that sometime the injector relays come loose from time to time so i messed with that a little and then i rechecked them. I got excited because they were working after that. As i went to start the car it still would not start. I went back to check the spark again, and now i am not gettin any spark and not sure if when reinstallin the injectors if i am gettin gas from the injectors either cranking it over seeing that i was not gettin any gas shooting from the #1 cylinder. I am very clueless at this point as what could be the problem. I have checked all the fuses and all of them seem to be ok at this time. The relays i have not checked again. I would like to have a volvo dealer do a diagnostic on the vehicle but as i am about an hour away from the nearest dealer and no one in town does diagnostics on volvos I am kind of in a bind because the cost of towing it would be great. I would greatly aprreciate any input and thank you very much for your time.
Justin
Answer -
that box is a iagnostic test point.below is instructions how to use this box to help check for possible trouble codes that may help fix the car.I would check for codes first.



in the engine bay on the drivers side near the strut tower there is a small black box with a wire attached to it.place the wire in the terminal marked 2.turn ignition key on (not started)press the small button for 1 second and the code will be displayed as a series of flashes.a red led displays the codes.the code will be three digits.small pause in between flashes for a single number long pause between flashes for the next number.example 121 will be flash.....flash..flash.....flash.repeat three times or until first code repeats itself.to erase the code after all codes have been checked hold the button for a good 5 seconds then release the light should light steady,then press for another 5seconds.this will erase the codes.  email me the codes and i will tell you what they are..socket 2is the fuel system 6 is ignition.


Answer
if not spark but has fuel it could be a bad ignition powerstage.check for power to the coil on one side and an oscillating power on the other side when cranking the car over.if not oscillating power I would try a new ignition powerstage.this is located beside the aircleaner housing in the drivers fender.it is black white,and aluminum in color.