hello y'all. Today I was cleaning out my washer fluid sprayers and i removed the wipers and the front cowl and got them good and clean with some air, and hooked up the hose for the washer fluid and got everything back together but then i noticed now my wipers wouldnt park in the proper position. originally they would be sitting horizontal at the bottom of the windshield but now they stop at the top vertically in my plane of sight. i reopened everything checked the connecotrs and watched the field of motion of the wipers and they start and end at the exact same spot as before so i didnt move them at all. i didnt touch the transmission linkage or anything. i checked wires and reconnected the connectors for the wiper motor and also all the fuses.. when i run the wipers and switch to off, they just stop vertically and dont come down horizontally anymore. i took off the board from the wiper motor and it looks all corroded, could someone check the pic and see if thats what i probably need to replace?
the motor seems fine and i didnt touch the tranmission linkage so it cant be that, i assume its just this board?


thanks!

 

 

I know this may be obvious but when you put the wipers back on did you lock them into the correct resting position? It took me a couple attempts of taking them on and off before they rested in the right spot

 

Looking at your picture it looks like these is some flux residue around the connectors (if that's what you are referring to) other than that the PCB looks in good condition.

If the motor always starts and stops in the correct position, then I'd say it's most likely to be a mechanical issue. Internally the motor has a nylon gear gear with a magnet embeded in it, as the gear rotates the magnet trips a sensor on the pcb to stop the motor, so it's hard to see how that can can go wrong.

If for some reason the linkage has come loose and/or slipped this could be the issue. Its not too difficult to reset ( ) but as you have already accessed the pulse board, it may be possible to move the gear (if it's removeable) and re-align it.

Leave the wipers in their "home" position (upright in you case) then take-off the pulse board and note where the magent has parked, it should be some near the sensor. You'll then have to work out how much to move the gear position, could be a bit of trial and error.

Alternatively follow the video, undo the linkage and manually move it to the correct position.

Please keep us posted.

 

hmm looks like there are some cold solder joints on that board

 

Way to obvious. 1 could only wonder if a test to the washers, then turning ignition off, before the wiper motor parked. Then installing the arms. Curious minds want to know?

 

The PCB most likely is soldered onto the connectors by hand and it looks like they didn't de-flux flux the joints, this is actually OK and of no real consequence, just looks un-sightly.

Re the wiper arms, I seem to recall they can only attach in one position, I suspect they would collide with the bodywork otherwise.

Interestingly the PCB layout has changed from the one I have here.

 

when i re attached them i put them exacly where i believe i took them off because i was lining up the notch inside the wiper arm and the wiper, but then it started hitting the hood and cowl area, so i repoositioned them veritcially and now they dont hit anything, they sweep perfectly and follow the same path as before but i believe something is messed with a sensor because they always end up parking in the vertical position.

so that means i take apart the sensor/motor and move the sensor that sets the park?

i didnt touch any of the transmission or motor assembly so it doesnt make sense how this happepend

thx

 

i beleive this is exactly what happened that ended up messing up the park position
i remember testing the washers and i must have cut ignitior before the motor parked

 

There are two "home" positions, one is the "Wiper Home" where the wipers and mechanism are horizontal at bottom of the windshield.

The other is the "Motor Home" where the motor's gear is aligned with the magnetic sensor on the PCB, these two "home" positions are aligned together during manufacture.

If the motor was moved (either electrically or mechanically) whilst the pulse-board wasn't attached, then this alignment would be lost, which sounds like your issue.

Its no big deal to remove the whole wiper assembly, but before you do, take the blades off and make sure the motor is it's "home" position by turning the ignition on and doing a quick "wipe"

At the 3:57 point in my video you'll see where the motor was "homed", your motor will still be attached to the mechanism but that's fine, there's no need to remove it.

Then at the 6:47 point you'll see where the "Arm" that bolts to the motor normally should be, this is the "Wiper Home" position. Gently un-bolt the arm and pull it off without disturbing the motor, then replace it in the postion shown in the video.

Before re-attaching the motor-arm you can check the mechanism is actually at it's lowest point in its cycle (wipers horizontal) this should be the same as the video (or similar)