car: 1990 civic HB W/ b16a

On the passanger side kick panel there is a two wire pigtail thats comes down, the connector is blue in color, one wire is brown and the other is green with a white stripe and hanging right next to the barometric pressure sensor. It runs upinto the car somewhere and cant follow it to the other end.Can anybody tell me what its for and where it goes to????? thanks

 

That wire is the ignition timing service connector. When you put a paper clip in there it allows you to adjust your ignition timing with a timing light and set it in place.

 

okay thats what i thought! thank you i was thinking that but wanted to make sure.
now heres the deal, i was going to adjust my timing and i put a wire between the two to adjust it and when i went to start the car i hear a "pop" noise like i blew a fuse or a relay and now the car wont start. so now i'm tring to figure out what poped and why it wont start.

 

Sounds like your wiring might be messed up.
I'm assuming you are OBD1?
If so, find D4 and make sure it runs to one side of that blue plug. If not, then your service connector isn't wired correctly.

One end goes to D4 and the other goes to ground.

 

this is OBD 0,the car has rans for 4 years prior to this. i was just adjusting the timing so i know its wired fine. it was just when i went to start it is when i heard the noise and and now its not even turning over. but if i push start the car and pop the clutch the care runs fine.

 

Ive also pulled the starter and it tested fine

 

sorry to jump in like this but anybody know when i jump the service connector the check engine like come on rite?...when i do it i have no check engine light on..help

 

Start your own ****ing thread. People doing this **** is beyond annoying, especially since they are probably not even going to get their question answered and yet then they bitch and bitch why they haven't.

 

The OBD0 ECU pin is B20.
Make sure your wire from your connector is running there and that the other wire in the connector is going to ground.

Obviously a 'POP' noise should not have been heard. Sounding like your ECU fried somehow so I'm suggesting you trace those wires just to make sure they didn't cause the problem.

 

4dr ef thanks for the info... i know the ecu isnt fried because if i push start the car and pop the clutch the car runs fire. I will check the pin b20 to see but the car wouldnt run if the ecu was fried

 

Not starting as in the starter isn't turning over or as in the car cranks (starter turns over) but doesn't start and run?

I'm assuming the starter isn't cranking, so I would check the fuse #2 under the dash as it's the starter signal.

 

Thank you everybody that supplied the good info and tips, i ended up replacing both of the battery cables and the car starts up fine now. when i took the old ones off i cut the old ones down the center and peeled off the jacket and found some fried wires in the center of the bundle. now my ride is back on the road... so if this happens to anybody in the future after jumping the timing connecter service port and it wont start.... replace your battery cables. when i put a omh meter to the wires originally they checked out fine which they would. lets say it has 50 strands of copper in the cable, if 49 are burned but tha last one isnt it would still omh out on a meter. so i never thought to replace them at the time.... they just couldn't hold the amps due to the fried wires in the middle

 

Have you checked to see if you have a short in the wire somewhere because jumping that service connector should not have fried your battery cables. The jumper just makes it so the ECU doesn't try to change the timing while you are trying to time the ignition portion.

Glad you got it fixed though, just don't jump that service connector again lol.

 

i know right? lol... thats what i dont get about the whole thing.... but they were messed up and the car does work now so i'm happy