Citroen Saxo wipers not working

Car: Citroen Saxo
Model Year: 2002
Categories: Electrics, ECU, Warnings & Lights
The wipers only work on 1 speed, if I use the other speeds the wipers stop half way up the windscreen. Is it likely to be the relay?
Posted: Feb 3, 2012 (12 years ago)

Try this
This sounds like a break in the wiring to the self-park contact on the
wiper motor. I don't know exactly how the interval wipe is implemented
in the Saxo, but the traditional way is to have the wiper motor supplied
through a contact in the housing which switches off (opens) at a 'park'
position. If you have the main wiper switch on, this is bypassed and the
motor just keeps going - if you have switched off the main switch since
the last cycle, the motor keeps running through the 'park' contact until
it opens in the 'parked' position, then stops.

The interval-wipe uses a relay which bridges the 'park' contacts briefly
- just enough to get the motor moving so the contacts are made again -
then drops out for the interval - say 5 seconds. During that time the
wiper will complete one cycle, but by the time it gets back to the
'park' position, the relay has timed-out and there is no supply, so it
stops as if you had switched off the main switch. A few seconds later,
it all happens again for one more sweep.

If the wire to the 'park' contact is disconnected somewhere, none of the
self-parking or interval stuff will work, but the main switch will still
supply current to the motor directly whenever it's on - but of course
that stops immediately you switch it off, and so does the motor,
wherever it is at the time.
Posted Feb 4, 2012 (12 years ago)

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