Diode Identification for CR5 on GM Wiper Pulse Board

Can someone please point me in the right direction for a suitable replacement of this broken diode off a GM wiper motor pulse board/module?

i’ve tried multiple online searches for it but couldn’t find a definitive one. The side has ‘22059’, but it doesn’t seem to match up with anything. Its dimensions are approximately 9.30mm long for the can and I neglected to check its diameter when I had it apart. :man_facepalming:

Hi, muscle_challenger73.

I need complete information.
What’s written on the first line and what’s written on the second line?
What does CR5 silkscreen printing refer to?

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Just what’s shown in the photo of my broken one. It looks like it’s ITO, but my only one is broken right where the info is. It’s just CR5 position on my particular board revision.

Not sure how much more this helps, but with a bit more digging I did find another image that shows component information directly on the silkscreen.

it looks like the diode rectifier in this location has ‘22009733’. This board also shows ‘10A…’ on the part I need to repair mine.

Hello,

These additional photos show different markings from the earlier photos. What are the complete markings that you see for each line. The one referencing ITO I was not having luck identifying this as a type code.

From context it seems possible that it’s there to protect the module from polarity reversal (such as from a reverse jump start condition) and carries all the current handled by the module. Axial diodes that fat aren’t particularly common…

If the theory is correct, it seems likely that a minimal forward voltage is probably the main concern, and something like a ST5045AX-D might be a reasonable option to try.

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Yes, I had also spotted that. It’s just the difference between my original AC Delco GM part vs. what’s now available from the aftermarket suppliers. I would figure I could use the same one the modern replacements have as the module is a direct replacement of my module…I’d just rather rebuild my original module as I can’t believe there wouldn’t be a suitable replacement diode to replace my broken one with.

Thanks for the help thus far!

Just some more information. I found a few more pictures of the OEM module online and can tell that what I thought initially was ‘ITO’ begins with an ‘L’ and not an ‘I’. It’s also possible that the final character is a zero and not an ‘O’.

I am determined to figure out what the values are on this diode so I can repair my original. :slightly_smiling_face:

Update: I managed to locate an OEM GM pulse board, so I checked the new Schottky diode for the complete number set. Here’s that:

LT0406

22059733

It looks like it’s a 6A so I’m going to try to find another one to replace my destroyed original. Hopefully DigiKey has something that matches up closely.

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