AU2 Wipers still not working after motor/linkage swap

[Half Dead]

Hi first time posting,
I have been living without wipers for a while, I assumed the issue was a seized linkage as when they started failing by moving super slowly at first, and eventually would just sit in the parked position kind of shuddering as the motor ticked.
I eventually found a replacement motor and linkage on ebay since my local wrecker didn't have one. Unfortunately, after installing the new part, It seems the issue remains.

I tested the plug with a multimeter (video below), with the wiper switch in the fast/high setting the wires (Colours as they are on motor side of the plug) have the following voltages:

Blue: Ticks between 1v and 0v
Green: Ticks between 12.2v and 10.8v
Black: Ground
Red: Ticks between 4v and 0v
Brown: Ground

https://youtu.be/8RaJw_bppGo

Not sure if these results are what's expected or where the problem lies, it is entirely possible that the ebay seller sent me a dud, or there's a problem elsewhere that's out of my expertise a little.

[aussiblue]

Check the stalk wiring inside the column shroud at the end of the stalk are not frayed or broken. They can have similar issues to this: https://www.youtube.com/watch?v=Q13bPJn6Y1o At least new ones are still available https://www.ebay.com.au/itm/182717597081 There may also be a fault in the wiper control circuit of the body Electronic Module (BEM). See http://www.fordmods.com/ford-technic...martsheild-d35

[aussiblue]

...and I think your grotty Multimeter might work better after a good clean and removal of dust in the switch etc

[Half Dead]

Originally Posted by aussiblue

Check the stalk wiring inside the column shroud at the end of the stalk are not frayed or broken. They can have similar issues to this: https://www.youtube.com/watch?v=Q13bPJn6Y1o At least new ones are still available https://www.ebay.com.au/itm/182717597081

Thanks, I'll check it out when I have a bit of time, see if I can spot anything loose back there, I wondered if the brown wire maybe shouldn't be ground, and has come loose and earthed out somewhere, so maybe that one goes to the switch.

Originally Posted by aussiblue

...and I think your grotty Multimeter might work better after a good clean and removal of dust in the switch etc

lol yeah, the switch on it has been dicky for a while.

[GasoLane]

Check the 'Tech Resources' area for wiring diagrams.

[Half Dead]

Originally Posted by GasoLane

Check the 'Tech Resources' area for wiring diagrams.

The wiring diagram is a little confusing, I'm looking at 24-4-47 the one labelled "Section I-A Wiper washer system - LWB" I think that's the right one?

The wires going into the wiper motor are labelled with codes like "56 DB-Y" or "58 W-DB" I assume the letters somehow correspond with the colour of the wires, but I cant see how they'd match the actual colours on my wires.


Also I'd need the version of the combo switch with Cruise control. looks like this guy https://www.ebay.com.au/itm/141204653428 has a few different versions. Not sure what "Wiper dwell" is, is that just intermittent wipers, don't they all have that?

[Half Dead]

OMG, so after a ton of troubleshooting;
- I pulled off the steering wheel (had to buy a set of 5-point torx bits and a steering wheel puller to do it) and took off the column switches...
- I tested the switches as best I could with my multimeter and they seemed to work as I expected and I couldn't see any obvious damage like in that Territory video.
- I tested the continuity of the wires from the plug that the column switch plugs into, right to the plug that the wiper motor plugs into... all good.

I doubted the BEM being the problem, since I wasn't having any other issues with anything else controlled by the BEM.

After doing all this, I decided to do the thing I probably should have done first; check that the new motor/linkages that I bought off ebay weren't dodgy.
I pulled off the connecting linkages with a flathead screwdriver and tried the motor on it's own... It worked just fine, turns out the driver-side wiper socket/sleeve/whatever is completely seized, which incidentally was the exact same issue I had with my original one ��

https://youtube.com/shorts/rSdGL_nVh6Q

[Uncle_Ken]

Cars, never a dull moment