Rear Washer Pump
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Rear Washer Pump
The last week my rear washer fluid pump has randomly turned on and won't turn off. I am thinking that there must be a short in the control on the steering wheel. Has anybody else ever had this problem?
Jeff
Jeff
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I have now realized that the short has to be outside the vehicle. It does it when the roads are wet or when I'm washing my vehicle.
I'm a little confused though. It seems that the power would only run out to the washer moter if the switch was on so if the wires near the motor shorted it wouldn't turn on because there is no power. This isn't the case. Anybody know how the wiring works and possible problems?
I'm a little confused though. It seems that the power would only run out to the washer moter if the switch was on so if the wires near the motor shorted it wouldn't turn on because there is no power. This isn't the case. Anybody know how the wiring works and possible problems?
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Well, if it's anything like the newer dome light (3rd gen runners and Tacomas up, at least) then it is an always hot device with the switch connected to the ground.
Sorry, only thing I can think of
EDIT:
If this is the case, maybe the water is seeping somewhere and completing the ground?
I don't know that much about electronics so...
Sorry, only thing I can think of
EDIT:
If this is the case, maybe the water is seeping somewhere and completing the ground?
I don't know that much about electronics so...
Last edited by Tacoma Dude; 03-08-2004 at 08:16 PM.
#5
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Originally Posted by cubuff4runner
I have now realized that the short has to be outside the vehicle. It does it when the roads are wet or when I'm washing my vehicle.
I'm a little confused though. It seems that the power would only run out to the washer moter if the switch was on so if the wires near the motor shorted it wouldn't turn on because there is no power. This isn't the case. Anybody know how the wiring works and possible problems?
I'm a little confused though. It seems that the power would only run out to the washer moter if the switch was on so if the wires near the motor shorted it wouldn't turn on because there is no power. This isn't the case. Anybody know how the wiring works and possible problems?
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Your probably right. The ground must be showing somewhere so when the water hits , it grounds to the car and turns on.
I still have one problem. I forgot to say that if I turn the car off and then back on it quits, otherwise the pump will run until I turn the car off.
I still have one problem. I forgot to say that if I turn the car off and then back on it quits, otherwise the pump will run until I turn the car off.
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Originally Posted by cubuff4runner
Your probably right. The ground must be showing somewhere so when the water hits , it grounds to the car and turns on.
I still have one problem. I forgot to say that if I turn the car off and then back on it quits, otherwise the pump will run until I turn the car off.
I still have one problem. I forgot to say that if I turn the car off and then back on it quits, otherwise the pump will run until I turn the car off.
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#8
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There is probably a relay somewhere, when it gets turned on it stays on until power is interupted. On mine the rear wiper/washer is controlled by 5 or 6 relays in a module. I don't know what they all do but I'm guessing one of them turns on and supplies power to the rear washer when the window is closed. If that is the case try lowering the window, that might turn off the washer.
If not you'll have a really clean back window
If not you'll have a really clean back window
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