Windscreen washer

[Braymond 4]

Doesn't appear to be working this week? Whats the first thing to check?

 

The res is full, its not frozen, the is no pump noise when trying to spray. Maybe a fuse?? Some kind of damage when it was frozen a few weeks back (when it was working)

 

 

[Tom Fenton 1,524]

Fault finding 101

 

Start by checking for power and earth at the pump.

[Braymond 4]

Thanks Tom

 

I've got a multimeter I've never used - what specifically do I need to do to check the above?

[Ozymandis 96]

Set meter to DC volts

Take off washer motor plug

Put one probe in each terminal of the plug

Have a glamorous assistant operate washer stalk

See if you have 12 volts.

 

If not then check to see if the positive  or the earth is at fault

 

Put one probe on one terminal in plug

Other probe to battery negative or good earth

Have assistant operate stalk

see if you get 12volts

 

If not swap the plug`s probe to the other terminal in the plug and try again.

 

if no 12volts then its, a positive supply problem, eg fuse, switch or a wiring problem.

 

set meter to ohms or continuity

one probe to negative or a good earth

other to each terminal in plug in turn

 

one terminal should give a very low or even zero resistance to earth

If not then its an earth fault.

 

My experience is the plugs corrode, water wicks up the wires and they go black and manky internally.

 

Chop off a few inches of the wire and join fresh wire to the good bit you cut back to if this is the case, and put some  individual connectors on instead of the green and manky corroded plug.

 

Sometimes when you take the plug off and put it back on a few times it cleans it up to work for a while

get your assistant to hold the stalk on whilst you tug the plug off and push it on a few times

[Braymond 4]

Thank you! Thats a really helpful answer!! Much appreciated

[Rob_the_Sparky 9]

On my car it was the washer pump, simple fix but had to make up a little extension to the harness as the replacements seem to have the connector pointing up rather than down and it is not long enough to connect.

[Ozymandis 96]

On 4/30/2019 at 5:02 PM, Rob_the_Sparky said:

On my car it was the washer pump, simple fix but had to make up a little extension to the harness as the replacements seem to have the connector pointing up rather than down and it is not long enough to connect.

 

I had to do just that t`other day