Problems connecting to ECU

**stefcio007** · 21-03-2014, 08:09 AM

I bought one of those bluetooth OBD readers online. Plugged it in, connected to my tablet. No problems. On the adapter status though it says no connection to ECU. How can I fix this?
Is it because I have an aftermarket stereo? I tried disconnecting it and trying to connect to the ECU, same deal.
Would really like to get this to work.

**stefcio007** · 23-03-2014, 07:44 PM

Anyone?
Might just give it a pass then.

**mb1907953** · 23-03-2014, 10:32 PM

Just get a $15 cord and download the free software and use a laptop. maybe the connector doesnt work with the OBD1 cars?

**stefcio007** · 24-03-2014, 07:57 AM

Originally Posted by mb1907953

Just get a $15 cord and download the free software and use a laptop. maybe the connector doesnt work with the OBD1 cars?

OBD1? I wasn't sure if it were an ODB1 or ODB2, the adapter I have is for ODB2, would explain it.
Which one should I get? There are plenty on eBay and I just want to make sure I get the right one.

**anthony--t** · 24-03-2014, 09:00 AM

Obd1 reads fine.

You need to have your accessories on for it to work. So if you didn't have the key in and accessories on that would explain it.

**stefcio007** · 24-03-2014, 09:23 AM

Originally Posted by anthony--t

Obd1 reads fine.

You need to have your accessories on for it to work. So if you didn't have the key in and accessories on that would explain it.

I've even tried with the car running and no luck.

**anthony--t** · 24-03-2014, 09:24 AM

Hmmm. What software? I just use a free version of vcds and an eBay cable. Always worked for me.

**stefcio007** · 24-03-2014, 10:23 AM

ELM327 v1.5 with the Torque app (paid) running on Android. I've seen other places suggesting to test the voltage between pins 4 and 7 and see if it's under 9V. Mine's slightly above 9V but I don't think that should make much difference.
I did have a cable left over when I was wiring up the stereo so maybe that's it? The cable was originally hooked up the the stock stereo.

**stefcio007** · 10-05-2014, 01:10 AM

A bit of an update. I purchased a VAG-COM KKL 409 type cable and still issues. I can hear some relay making a clicking sound.
I realised though that my car was manufactured in 1995 which means I probably have OBD1, so no dice.
Not too fussed about it since the onboard computer shows enough on the instrument cluster to keep me satisfied.