I would appreciate any comments or tips in trying to solve the following
My rear wiper exhibits the following problem:
1) On switching the rear wiper on, it only does about one-third of a
sweep before stopping, it then does about another third (not exact) on
the next intermittent wipe, and so on repeated.
2) On using the long pull water spray multiple wipe option, the wiper
will perform a number of sweeps, but end parked at a random position on
the rear screen.
From googling, it would appear to me that there is a loss of power in
the wire providing continuous power to the wiper, possibly due to a
break in the wire.
Do you agree with this diagnosis, and if so, do you know where the break
is likely to be, and where and how I would have to connect into the
cable to repair the problem?
Any fault with tailgate electrics is likely to be a wire break where the
wiring passes from the body to the tailgate.
Your diagnosis seems reasonable. The ignition feed comes from fuse 43;
this also feeds the electric windows, so if they are working you can
eliminate the fuse.
Next step is to remove the tailgate trim to access the wiper motor multi-
plug. There are two wires at this point coloured white/red, and green/
Your car may be a facelift, or pre-facelift model. According to Haynes,
the pre-facelift model used the white/red as the permanent feed. Again
according to Haynes, the colours are shown the other way around for
facelift models; the permanent feed is shown as green/blue! However,
Autodata shows green/blue as the permanent feed for all models. I suspect
the earlier Haynes manual is wrong. (As it is in many respects.)
Your options depend at what resources you have. If you have a test lamp
or multi-meter, you could measure for voltage at the connector (with the
ignition on). Try moving the loom around where it comes through from the
body to see if the feed is intermittent.
Alternatively, you could run a temporary feed from the battery +ve to the
connector using a length of wire to see if the problem is eliminated. If
you use this approach, I would advise fitting an inline fuse at the
battery end of the test wire.
Post back for further help,
Thanks Chris. I eventually got round to investigating the problem - not
wishing to freeze to death outside in the recent ice and snow. I took
the quick and easy approach and released the flexible rubber hose
between the Focus tailgate and the body - to find one completely broken
cable Green/Blue (power to the wiper) - plus three others fraying plus
the washer tube split (I had wondered about some recent water ingress)!
Quick splice around the broken green/blue and I now have a fully
working rear wash/wipe.
I will create a new topic for the broader detail of what I have done for
future reference by others.
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