Ron Harris

Just like the title says!

STA509a blew up due to the IACV/ECU issue. IACV replaced, new STA509a chip will be here friday, and I need the trace pin outs to the ECU since it took at least 5 traces with it when it burned.

I have this from Nakis awesome thread, but need to know where the other 6 pins of the chip go to on the ECU

ECU pin 6 to STA509A pin 9
ECU pin 8 to STA509A pin 3
ECU pin 7 to STA509A pin 7
ECU pin 17 to STA509A pin 5

Thank you in advance, I've pmed a few people but no response.

maximatech12

Why not just salvage one?
Do you have the numbers from the previous ECU?

Ron Harris

I found a place a state over that repairs them for $75 bucks, so going to try that first.

Robert Baker

http://www.nicoclub.com/archives/nis...e-manuals.html

If you need pinouts you'll need the Factory service manual.

DennisMik

iTrader: (2)

The op needs the schematic for the printed circuit board that is inside the ECU. The service manual does not have that kind if information.

Ron Harris

Exactly. I'm sending it off to be repaired, but it would be a nice gesture to have this info out there for future reference. I honestly had no idea that there was a 5th Gen IACV issue until after I got my car, and I did tons of research before buying it. Not sure why this isn't stickied somewhere.

maximatech12

That's probably going to run you $300.
​​​​​why won't Hitachi give you the info your looking For?
Their support could be better. They made the thing and can't even give you any technical support.

Ron Harris

$75 bucks is what it cost. Hitachi wouldn't know what pins on the STA509A go to what point on the PCB of the ECU.