Wipers intermittent function

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91q45t
Posts: 22
Joined: Sat Aug 08, 2020 9:52 pm
Car: 1991 Infiniti Q45T

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So on my 91 q45 the wipers, in intermittent mode, will go to the top and stop then to the bottom and stop.
And the delay plays into this as well for example if I have it to like 5 seconds
Wipers move to the top. Then 5 seconds later move to the bottom.
Doesn't matter the speed.
But low speed and high speed works fine.
Also it doesn't park fully...

Any ideas what to look into?


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Q451990
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Posts: 11472
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
Location: Columbia, SC
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Interesting. I don't remember having heard of this before. I'll try to do some reading in the service manual to see if there are any ideas there.

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Q451990
Moderator
Posts: 11472
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
Location: Columbia, SC
Contact:

Post

So the service manual doesn't say much. They have a kind of cryptic diagram of how to test the wiper amplifier with a test lamp on page EL-95. I suppose you could try that. I'm unclear if you're grounding pins 1,3,and 6 all at the same time, or moving the ground around. If I'm reading it correctly, the light should be connected through pins 2 and 4, and when grounding pins 1, and 3, it should not light up - but grounding pin 6 should cause the light to come on.

You can check out the service manual at www.infinitiservicemanual.com


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