Dreaded ABS Issues

[stefcio007]

So that's what that box was under the rear seats that I found ages ago.

[UKDavo]

Haha yea, they changed it to a module and pump combo just under the expansion tank in about 95-96 I think.

I'll take it apart again and check but it looked perfectly fine to me :S.

[UKDavo]

Okay so I pulled it apart again and these are the photos. Everything looks fine apart from 1 part...
Anyone have any idea what that orange stuff is? Looks like it burst :S.

Think I might track down a new ECU and try that 1st before going whole hog and forking out for a new pump.

[stefcio007]

That thing is a crystal oscillator, they don't burst like that (actually, they don't burst at all). Just looks like someone dropped some glue accidentally as there is also some of it on the other ICs.

[UKDavo]

That thing is a crystal oscillator, they don't burst like that (actually, they don't burst at all). Just looks like someone dropped some glue accidentally as there is also some of it on the other ICs.

Ahh okay, you think it might be worth trying another ECU anyway?

[stefcio007]

Do you have a high res top down picture?

If you can get one cheap and easily, why not?

[UKDavo]

I'll try and get one. I'm not experienced with electronics but it looks fine!

[AALocksmiths]

Don't worry about the orange stuff as it's just a coating to protect the PCB and components.

What does the other side of the ECU look like?

[stefcio007]

Don't worry about the orange stuff as it's just a coating to protect the PCB and components.

What does the other side of the ECU look like?

The other side is a massive heatsink for the huge array of transistors there because they get hot. They also might be the cause of the failure, but you'd need to check each one.
Based on all the surface mount components I'd guess there is barely anthing on the other side.

[AALocksmiths]

I would be looking at the other side where the ECU plug is. As you have said that the other side has heatsink on it then I really wouldn't be surprised if it's that side that has the issues.