Injector drivers

Hi,

Has anyone replaced their injector drivers? I assume from sources around that the below two chips do this function, one for each side of the engine.

Is this the only thing I need to replace or is there something else.
Injector driver on pot 3 is fried.

 

I tried it once on one of my VH45 ecu's. Didn't work well, but that could be down to my electronics skills

 

here is the picture of the two chips.

 

I was under the impression that the green pots, below the left chip are the drivers. I think this mainly because I had a short on one of my injector looms and it burnt one of those green thingy's. I would offer you the fried ecu to play with, but it just got binned, like last week after sitting under my desk for about 2 years

 

That was my understanding too. I changed one of the green things.

 

Interesting, anyone know in what order they are 1 to 6?

 

You'd think in order, but my #6 fried, and it wasn't on the end of the line!!!

 

The green blocks are capacitors. And caps do dry out so might be worth replacing. Output transistors for firing injectors would be mounted on the case (heat sink)

Without seeing a diagram i would guess they are there to smooth the output to the injectors when they fire. i.e. stabilize the voltage as the injector coil is energized.

I would definitely replace the caps first.

 

If you want to find which one it is use a multimeter testing from injector 3 ecu pin and just follow the track on the board testing to confirm.