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Wipers on ALL the time...!

Tirnipgreen
Tirnipgreen
in Electrical

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comment_652615
26 minutes ago, Tirnipgreen said:

Just wondering if there could be an easy diagnosis for my wipers being on all the time that the key is in the ON position...? Any insight is greatly appreciated...Ryals

Yep, one or more of the circuits going back to the switch is probably grounded.


  • 1 year later...
  • Author
comment_664815

First things first, my car is a 1973 240-Z...the first year of intermittent wipers. So I am back on the issue of my wipers being ON whenever the ignition is ON. I turn the key ON with the wiper switch OFF and the wiper motor runs and the buzzer buzzes some of the time off and on. When I switch the wipers to the first detent (intermittent), the wiper motor runs and I can hear a relay clicking intermittently. I then switch the wipers to the next detent (low) and the motor speed does not change but continues to run. I then switch to what should be "high" and the wiper motor speed slows, but continues to run. SteveJ and I are going to be tackling this issue within the next few weeks, but any comments are always welcomed. 

    • Like 1
    comment_664835

    As yours has the intermittent wipers, it has a circuitboard with electronics.. could be there is a defect transistor  that makes/has a shortcut and due to that the elec. motor keeps spinning.  That's what i would look for after the pinched wires.

    • Like 1
    • Author
    comment_664871

    Success...! (I hope) I was curious as to the wiring of the connectors associated with the wiper motor. I referenced the ABATE wiring diagram (excellent) and found a discrepancy in the configuration of the wires in the 6 wire connector that the wiper motor plugs into. Wish I had started there, but I could not be a happier guy right now...! Two wires were swapped...The Blue (L) wire and the Blue with Red Stripe (L/R). The intermittent relay still sounds like it is clicking on and off no matter which setting the switch is on, but I am elated that I can actually turn the wipers OFF...! I appreciate everyone's comments and suggestions. Persistance and beer work wonders...!

    • Like 4
    comment_664894
    10 hours ago, Tirnipgreen said:

    The intermittent relay still sounds like it is clicking on and off no matter which setting the switch is on

    Maybe another swapped wire? A other solution to the problem could be replacing the electronics that was hit by the problem with the switched wires. curious what it will be!  This by the way is EXACTLY THE PROBLEM WITH TODAYS CARS, they have lots of electronics in them and therefore lots of problems, i'm sure they don't get driven for over 50 years like our z's.. 😉 

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