Technical Windscreen Washer motor issue

[OwenCr]

Hi there.

About a month ago the windscreen washer motor stopped working.

First thing I did was check if the fuse popped (fuse no. 25 in the box, rated at 20A), but this was fine. I tried another good 20A fuse to make sure and the motor still didn't run. I noticed that this fuse also powers the windscreen wiper motor(s) ... both of those motors run fine.

So then I went under the driver's side front wheel arch to look at the washer motor itself. I disconnected the two pipes (this is a two-way pump btw, even though there are some out there which are one-way pumps that only cover the front windscreen), disconnected the wire connector, and then removed the washer motor itself from the reservoir. The actual motor on the pump itself was completed rusted/corroded so this convinces me that this motor is for the bin.

I went to order a new one online ... came all the way from China (what's new?) so had to wait about a week or two for it to arrive. When I put this motor/pump into the reservoir + connected the power connector and the pipes, I was surprised that this motor wasn't running either.

The only thing I haven't checked so far is the power connector (pink & green wires), which look very very flimsy. I guess this can be checked with a voltmeter while the key is in MAF mode and pull the windscreen washer handle from the steering column?

While I investigate this, is there anything else that I could check to see why this isn't working? .... other than it could be this motor itself that never worked in the first place?? Is there any other fuses / relays I need to check? ... could it also be something to do with the actual windscreen washer / wiper handle on the steering column?

Kind regards,
Owen.

 

[bugsymike]

Hi there.

About a month ago the windscreen washer motor stopped working.

First thing I did was check if the fuse popped (fuse no. 25 in the box, rated at 20A), but this was fine. I tried another good 20A fuse to make sure and the motor still didn't run. I noticed that this fuse also powers the windscreen wiper motor(s) ... both of those motors run fine.

So then I went under the driver's side front wheel arch to look at the washer motor itself. I disconnected the two pipes (this is a two-way pump btw, even though there are some out there which are one-way pumps that only cover the front windscreen), disconnected the wire connector, and then removed the washer motor itself from the reservoir. The actual motor on the pump itself was completed rusted/corroded so this convinces me that this motor is for the bin.

I went to order a new one online ... came all the way from China (what's new?) so had to wait about a week or two for it to arrive. When I put this motor/pump into the reservoir + connected the power connector and the pipes, I was surprised that this motor wasn't running either.

The only thing I haven't checked so far is the power connector (pink & green wires), which look very very flimsy. I guess this can be checked with a voltmeter while the key is in MAF mode and pull the windscreen washer handle from the steering column?

While I investigate this, is there anything else that I could check to see why this isn't working? .... other than it could be this motor itself that never worked in the first place?? Is there any other fuses / relays I need to check? ... could it also be something to do with the actual windscreen washer / wiper handle on the steering column?

Kind regards,
Owen.

Can you check each wire individually between a voltmeter and earth when someone is working the washer switch (both directions.
Often the voltage supply is swapped - to + and vice a versa to control flow front or back washer jets.
Assuming still no power at either terminal maybe check for break in wire back to ECU/BCM which controls this operation.
Same principle is used on windows as reversible motors.

 

[icheatatscrabble]

This happened on my Cinquecento. Female spade connections on the loom were corroded. Chop them off and put some new ones on.

 

[bugsymike]

This happened on my Cinquecento. Female spade connections on the loom were corroded. Chop them off and put some new ones on.

Certainly well worth checking.

 

[OwenCr]

icheatatscrabble said:

This happened on my Cinquecento. Female spade connections on the loom were corroded. Chop them off and put some new ones on.

Certainly well worth checking.

^^

Yep, it turns out that's what it was. Me and a work colleague tested those two wires with the voltmeter / DC mode.... 12V / -12V coming in no problem. So it was the female spade connectors that was stopping the motor getting any juice.
... thank goodness! If it wasn't this then it would have been a lot more work.

Later I will check the connector properly if it can be cleaned up. Do you know if it is possible to buy another one of these connectors?

 

[bugsymike]

Sometimes you can buy packs of the spade terminals to fit in the plugs once the old ones have been released, the main thing is keeping the damp out.