Power steering control module diagram needed

Good afternoon,

I attached a wiring diagram of the power steering as well as the pinout of the connector of the module for you.

https://www.2carpros.com/articles/how-to-check-wiring

Let me know if you have any other questions.

Roy

Any chance you have showing relays, resistors and diodes? I need to find info on diode that has blown so I can replace it with correct one.

Regards,

AJ Sentiger

I have no internal diagrams at all. I gave you all I have.

What makes you think you need a diode?

Roy

It is broke off.

Are you asking about a board level diagram for the module? Can you take a picture of the item you have so we can see it please post it here.

Do you mean you have removed the module and opened it up for inspection?

Roy

Yes. We use these units for railbuggys and the failure is due to either moisture getting into the electrical box or components like resistors and diodes blowing or solder joints coming loose. It would be helpful to have the component diagram for the ECM to be able to fix them instead of replacing the whole system for about $125.00.

This is not the correct one but diagram needed for 05-07 Ion, Cavalier etc.

https://www.google.com/imgres?imgurl=https%3A%2F%2F5.imimg.com%2Fdata5%2FTL%2FXH%2FMY-5111260%2Fdenso-electric-power-steering-electronic-control-unit-500x500.jpg&imgrefurl=https%3A%2F%2Fwww.indiamart.com%2Fproddetail%2Fdenso-electric-power-steering-electronic-control-unit-18732798655.html&docid=3sDwPj-9mlaKFM&tbnid=f_9UII9j2DR9iM&vet=1&source=sh%2Fx%2Fim

Got it.

We do not have any information on the internal workings of the modules themselves, sorry.

Roy

Any idea of where to look?

Check some of the companies that repair or rebuild these units. They may have both the technical information you need as well as the parts.

A1 is a company that does them.

Roy

United Radio in Syracuse also repairs them. Another option would be to have someone reverse engineer the board but that could be expensive. Parts wise it would probably work to get a known good one and record the parts used and note the common failures. If moisture entry is a big issue you could open the module and use some conformal coating to seal it some. When I make PC boards myself I use clear lacquer to spray on 3-4 coats and seal the components. Never had an issue then and unlike using something like epoxy or silicone it is easy to remove around components for repair. Also consider replacing things like resisters or other discrete components with higher rated parts, Say there is a SMD diode that fails a lot, replace it with a larger part, that is easier with resisters and caps but doable for other parts once you know the specs for them.