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Need ecu help!
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Old 24 Nov 2012, 08:52 AM   #1 (permalink)
Fresh Scooby
Join Date: Nov 2012
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Unhappy Need ecu help!

Hi Guys - I'm a newbie here so play nice!

My subaru rx 99 has the MIL lighting up. I bought an elm bluetooth diagnostic tool for it. It can't connect to the ecu so it disconnects. Thought it was the device (since it was only $20 on ebay) so bought a more expensive wired diagnostic tool that most definitely supports the protocol my car is running (iso 9120 off the top of my head) & it is having the same issue. It too cannot connect to the ecu so it disconnects.

What's wrong?! Have I missed connecting a particular wire?!

I've connected the 2 green & 2 black connectors under the steering wheel... SO why can't either of my diagnostic devices connect to the ecu? They most definitely connect to the car & power up from the connection but once attempting a search for the ecu & finding nothing, they disconnect. So surely I've missed something!?

Help would be GREATLY appreciated (as I'm getting driven nuts by this!)!!

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Old 24 Nov 2012, 09:21 AM   #2 (permalink)
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Join Date: Mar 2009
Location: UK-Earth - Search google maps for "The Stig"
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Re: Need ecu help!

It's a 99 and not all are obd the early cars are ssm 1 or 2 ,
Evoscan will work,
Have a nice day now .
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Old 24 Nov 2012, 10:59 AM   #3 (permalink)
Fresh Scooby
Join Date: Nov 2012
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Re: Need ecu help!

Cheers buddy I'll give that a go.
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diagnostics, ecu, electrical, mil

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