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mikedrummond

Member Since: 04 Jul 2020
Location: Boston
Posts: 3

Defender 90 Wipers won't turn on but power is on

I tested and traced current from the dashboard wiper switch to the park switch on the wiper motor, and the current is coming in just fine. If I remove the park switch from the wiper motor but leave the wires all connected, the wipers work when I turn the key on accessory. Since the switch is disengaged the wipers can't park, which is expected of course. When I clip the park switch back into the wiper motor socket the wipers don't work - they wont turn on using the dashboard wiper switch. But I tested that dashboard wiper switch and 12v comes out when the switch is turned to the on position, and no current comes out of the back of the switch when it is is turned to the off position. This is expected. But I can't figure out why the wipers won't turn on using the dashboard wiper switch when the park switch is in the socket.

4th Jul 2020 4:56pm

cee-b

Member Since: 25 Jan 2018
Location: South West
Posts: 117

It sounds like the park switch is knackered Mike

4th Jul 2020 7:35pm

jeffersj

Member Since: 23 Jan 2015
Location: Near Preston
Posts: 431

1996 Defender 90 300 Tdi HT Bronze Green

As cee-b says! Park switch widely available in UK at low cost sure about US. Jeff
Ex 1968 Series 2A
Ex 90 TD5
Ex D3
Ex D4

5th Jul 2020 10:51am

mikedrummond

Member Since: 04 Jul 2020
Location: Boston
Posts: 3

Thanks guys. The thing is, I thought the same thing, so I ordered a new park switch from Rover's North in the US. Only after I installed the new park switch did I create this post. Same exact behavior for both switches. So I am really baffled.

5th Jul 2020 11:49am

jeffersj

Member Since: 23 Jan 2015
Location: Near Preston
Posts: 431

I suppose the park switch could be faulty, recently when I fitted one the clip holding the switch in came loose making it useless so it was replaced, someone on here said that park switches were made of cheese they are so fragile. Jeff
Ex 1968 Series 2A
Ex 90 TD5
Ex D3
Ex D4

5th Jul 2020 5:23pm

mikedrummond

Member Since: 04 Jul 2020
Location: Boston
Posts: 3

Thanks again. I wanted to give an update on this. I ordered a second switch and got the same result. I also manually tested all 3 switches - the original and the 2 I ordered, and they work fine when they are not installed on the wiper motor. To mention again, when they are not installed on the wiper motor the wipers work fine, and pressing the little plastic shaft in on the back stops the wipers every time. It's when I clip them back into the wiper motor that nothing happens.

22nd Jul 2020 12:31pm

jeffersj

Member Since: 23 Jan 2015
Location: Near Preston
Posts: 431

I know it might sound stupid but try changing the brown and red (or whatever the non negative colours are) wires around, its worth a try. Jeff
Ex 1968 Series 2A
Ex 90 TD5
Ex D3
Ex D4

Last edited by jeffersj on 22nd Jul 2020 2:56pm. Edited 2 times in total

22nd Jul 2020 2:46pm

Procta

Member Since: 03 Dec 2016
Location: Sunderland
Posts: 5224

How good are the stalks on these? that could be an issue, i am suspecting mine is a bit hit and miss, after i changed the switch, sometimes the wipes just stop mid way when i switch them on, i have to give them a gentle pull and they work. Defender TD5 90 ---/--- Peugeot 306 HDI hatch back

Success is 90% Inspiration and 4 minutes Preparation # you can make it!

22nd Jul 2020 2:51pm

jeffersj

Member Since: 23 Jan 2015
Location: Near Preston
Posts: 431

As Procta says the stalks are pretty fragile also.

I don't suppose you have stripped the wiper motor? It is straight forward just to see if everything is OK It seems that if everything else is OK then it is staying permanently parked. Jeff
Ex 1968 Series 2A
Ex 90 TD5
Ex D3
Ex D4

22nd Jul 2020 2:57pm

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