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The ABS indicator is illuminating in this car, according to the mechanic the ABS ECU is fried.

I have tried rotating few reconditioned ABS ECUs with the same problem. So I'm not very sure if the ECU is to blame, and purchasing a brand new ECU will cost $1000+. So before going for that option I would like to make sure if the ECU is the problem.

Is there a way to diagnose this?

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Did you ask your mechanic why he thinks the ABS ECU is fried? They seem to get changed regularly if the mechanic can't determine the fault, but often it's sensors at fault, not the ECU itself. – Timo Geusch Dec 5 '11 at 19:01
He said it's the usual case, even though he has this scanning equipment he said that it's fried and it needs to be replaced. – Low Flying Pelican Dec 6 '11 at 4:43
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The part that makes me think this might not be the case is that you said you already swapped in a couple of other ABS ECUs and they didn't work either. The law of averages suggests that it's fairly unlikely that you end up only with dead ones, especially if they've been reconditioned by someone who knows what they're doing. I think you have an electrical fault, but not necessarily inside the ECU. I'd check for power at the ECU first and then go hunting for a broken wire. – Timo Geusch Dec 6 '11 at 14:16

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