SOLVED - OBDII Fail, car wont start... Help please!

[Simmoyo]

Hey guys.. I was trying to be smart by ordering a 3 pin to 16 pin OBDII adapter from ebay (check link below). The adapter had a 12v red and black cable which I hooked up to the battery, and bang my cheap OBDII bluetooth adapter turned on. I chopped off the plastic surrounding the 3 pin connector on the adapter and plugged that into the 3 pin DLC of my 2000 S2000. There was a spark and thats when I knew I F'ed it up.

The key turns the dash on as usual, push the start button and the engine just turns, BUT the car wont start, the engine just keeps turning. I checked the fuses under the drivers seat and next to the battery and they all look good.

BUT MY CAR WONT START! Please help


**EDIT** To sum up my problem, I basically put a 12v current down one or more wires connected to the 3 pin DLC plug

Hey guys.. my car obviously has a 3 pin DLC connector and I wanted to hook up a 16pin OBDII reader, even though I knew there was a 99% chance it would not work.

I ordered a 3 pin to 16 pin OBDII adapter from ebay (check link below). The adapter has a 12v red and black cable which I hooked up to the battery, and bang it powered my cheap OBDII bluetooth adapter and it turned on. I then connected the adapter into the 3 pin DLC of my 2000 S2000. There was a spark and thats when I knew I F'ed it up. When I trying to plug it in again there was no spark so I knew I blew something.

Now, after its all unplugged, the key turns the dash on as usual, but when I try to start the engine, it just keeps turning, and the car just wont start. I checked the fuses under the drivers seat and next to the battery and they all look good.

MY CAR STILL WONT START! Please help


To sum up my problem, I basically put a 12v current down one or more wires connected to the 3 pin DLC plug


........ check fuses with more than your eye



http://www.ebay.com.au/itm/280673918107?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_3143wt_952

[dc2r-0636]

hmmm,

do you have an alarm on the car ? possibly immobilizer isnt letting the car turn over ?

[VeYzZii]

Simon, you inboxed me earlier didn't you? Theres no OBDII for S2000s in Australia. It only powered up because its getting power. DO you remember what sparked? Which pin?

[Simmoyo]

I know, I'm stubborn lol my bad. I think the middle pin sparked. It happened when I plugged the adapter into the 3 pin socket. The car has no after market alarm system or immobilizer

[VeYzZii]

I know, I'm stubborn lol. I think the middle pin sparked. The car has no after market alarm system or immobilizer

Unplug the battery. Wait a couple of minutes. Meanwhile, check the fuses near the battery. Theres a little coompartments. Its where your main fuse is. Then plug battery back in and try to start.

[Simmoyo]

Thanks VeYzZii!! I will be back

[Simmoyo]

Didnt work... I know I blew something because when I tried to plug the adapter in for the second time it didnt spark, so the damage was done.

What could I have damaged? The backup 7.5amp ECU fuse is fine

[Simmoyo]

Its not a fuse so it could be a relay. Any Ideas?

Worst case scenario I think I'll need a new ECU. Is anyone selling a good aftermarket one?

Thanks

[VeYzZii]

Yea dude. Check all the fuses over again. Maybe you missed one. Maybe check the fuel pump relay?

[Simmoyo]

Yeah I'm looking for the fuel pump relay but I cant find the bastard!... when I find it i'll swap it with another one of same specification and see if it fixes it. There are 2 relays under the drivers seat if I'm not mistaken but they are not labelled and are hard to get out.

Looks like public transport to work tomorrow lol. thanks VeYzZii

[AusS2000]

I don't think there are any relays under the seat. There is a relay box thing under the dash that controls the fuel pump. If this turns out to be the culprit let me know. I have a spare. Not cheap though. cost me $100 and took 3 weeks from Japan.

[Simmoyo]

thanks Aus... Are you talking about those 2 small black boxes next to all the fuses?

Do you know where the ignition control management (ICM) system is? I may have blown that

[AusS2000]

No, the PGM-FI Main Relay.

http://s2000.byteserve.com.au/images/PGM-FIMainRelay.png

It connects to the PGM-FI diagnostic port that you plugged into and it is responsible for controlling the fuel pump.

[Simmoyo]

Thanks for the help guys, it turns out it was a fuse.. however you couldn't tell just by looking at it. I had to test every fuse in the car with a home made fuse tester. Sorry about all the fuss, I shat myself and the problem was where I first looked! Thanks Aus, thanks guys!! the chariot lives

[beeza]

Nice find.

But why couldn't U tell,was it fully encased fuse?

Can I ask about this homemade fuse tester too?

Sounds interesting.

[Simmoyo]

No, it was a normal transparent fuse however it must have blown on the side or somewhere that wasn't obvious under average lighting conditions. I had pulled it out twice and couldn't see anything before. A proper fuse tester is a pretty important tool as I've just learned

[beeza]

kool as mate,cheers.

[Simmoyo]

I took the 2 long sharp probes from a cheap voltmeter, hooked them to a battery pack and an LED, then probed both sides where the metal is exposed on each fuse, if the LED didn't turn on, then its effed

[beeza]

Too easy!