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Registered
Join Date: Sep 2021
Posts: 1
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R53 relay testing
Hello all,
I'm new here, thanks in advance for sharing your knowledge about cars!  Heads-up, I'm not handy at all, I just started a few DIY projects on my 964 -following some tutorials posted here- but I'm learning on the way. Right now I'm working on my high pressure windshield washer system that doesn't work. - checked fuse #24 -> OK - motor running when applied 12V outside the car - now checking the fuse R53. My electronic level is similar to a middle-schooler, so I spent several hours over the past couple of days reading about how a relay works, but I think I'm still missing a lot of info. Not knowing this 6 pin relay, I checked the resistances between the different pin to try to find the control ones. I got a resistance between pin 15 and 31 so this is where I plugged my power supply, with Neg on 31. I hear two clicks, and it seems the relay doesn't stay closed with current applied. I am not sure whether I'm testing it wrong, or if the relay is actually defective  Here is a short clip: https://youtu.be/Gz7AE2aU45g Thanks for your insights! |
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09-08-2021, 09:39 AM
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Administrator
Join Date: Aug 2016
Location: Los Angeles, CA
Posts: 6,087
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Hello and welcome to the forum! We have an immensely knowable community that has likely encountered everything you'll be going through to get your 964 sorted.
I'm attaching some helpful links below - let us know if you have any questions and welcome again! Porsche 964 DIY Tech Articles Porsche 964 Parts Catalog |
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09-08-2021, 02:49 PM
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You will need the sheet #8 of the wiring diagram for the 964 equipped with wipe-wash cleaners.
R53 is the fluid pump relay. 
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1993 964 C2 still makes me smile Retired and work as needed as a pain in the **s. |
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09-09-2021, 02:55 AM
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911
