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Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Td5 Wiper Fault

In the last few days the wipers on my 2005 Defender have developed an intermittent fault, hoping someone could confirm my suspicions?

If i push the lever down for intermittent wipers they work but sometimes randomly stop. Likewise putting it onto the slow speed continuous wiping has the same issue. However if i put them onto quick wipe then back to slow or intermittent they seem to work fine most of the time.

They always return to the bottom of the screen which I think rules out the park switch and given that they work sometimes I suspect the relay/earth is ok, does this point to the stalk itself having an issue?

Thought it best to check before spending money on parts unnecessarily

Thanks, Harry

10th Jan 2017 10:56am

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Remove the intermittent wiper relay its under dash check for broken solder joints in the PCB

10th Jan 2017 11:28am

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Thanks Dorsetsmith, I'll pop it out tomorrow and have a ganders. Sorry for the stupid question but presume the pcb is the board inside the relay?

10th Jan 2017 6:12pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

If you remove plastic case from the relay you see small PCB and the solder joints

10th Jan 2017 7:06pm

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Problem solved, thanks Dorsetsmith

I couldn't see anything that looked out of the norm inside the PCB but picked up a spare from a local breakers and all seemed to be working, thanks once again

12th Jan 2017 10:53am

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

No problem had same thing happen, fitted replacement relay and then find dry solder joints in old one, now have a spare one

12th Jan 2017 11:02am

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

I spoke too soon, the wipers have thrown a wobbly again.

Now there is no intermittent wipe and no continuous at the slower speed either, the relay does click when the stalk is moved but not always.

Fast wipe works fine but when moved back to slow wipe the wipers stop wherever they are at the time. I had a spare stalk so tried that and it made no difference.

Could it be the relay once again or the wiper park switch perhaps?

5th Feb 2017 3:25pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6772

I'd go for park switch, they are cheap and are usually the cause wiper problems Ray
My build thread
http://www.defender2.net/forum/topic17615.html

5th Feb 2017 4:54pm

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Thanks Mk1collector, I swapped the park switch for a new one just now but that doesn't seem to have made any difference either sadly.

Having tested the 3 terminals on the output side of the park switch just now, with the wipers switched to slow speed i'm getting power on the red terminal and on high speed the yellow has power which leaves the blue as earth I presume?

This makes me think that with power up to it being ok, the motor itself has a fault. Can anyone confirm my suspicions before I shell out for a new one?

Thanks, Harry

5th Feb 2017 6:03pm

grafty99

Member Since: 15 Aug 2012
Location: North Devon
Posts: 4794

Have you tested the switch on the column? 2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
Instagram http://www.instagram.com/george_grafton

5th Feb 2017 6:41pm

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

I've not tested it but swapped it for a new one and the the wipers are still the same.

Given that power is being delivered to the motor by the fast and slow supplies (dependent on stalk setting) I presumed it was ok?

Thanks, Harry

5th Feb 2017 6:52pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6772

If you disconnect the motor from the wiper wheel boxes then try to rotate the wipers do they feel seized? Ray
My build thread
http://www.defender2.net/forum/topic17615.html

5th Feb 2017 6:54pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Click image to enlarge

5th Feb 2017 6:55pm

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Thanks for your help guys

I pulled the wiper motor out with the drive cable, the spindles turn nicely and there is no damage to the cable itself. Having detached the cable from the motor and popping it back through the spindles, they turn fine as well so nothing untowards in there.

I then circuit tested the 5 wires that go into the park switch as per Dorsetsmith's diagram and got the below results:

Reciving Power N/Y
Plug No Colour----------------Slow Speed--------Fast Speed---------Intermittent
C0000-1 Black
C0000-2 Brown / Green --------N--------------------N---------------------N
C0000-3 Blue / Green --------N--------------------Y----------------------N
C0000-4 White / Green ---------Y--------------------Y----------------------Y
C0000-5 Red / Green ---------Y--------------------N----------------------Y

It's interesting the C0000-2 never seems to get power?

Had a look inside the wiper motor and the main drive cog looks messy/worn but it spins smoothly in fast speed. At slow speed the motor clunks and knocks in your hand. Slow speed only seems to engage once it's been moved to fast then back to slow and it randomly stops irrespective of where the park switch tells it to.

It seems like there is a faulty connection or bush inside the motor given how much it bangs. Does this sound like it's time for a new motor?

Harry

6th Feb 2017 1:32pm

grafty99

Member Since: 15 Aug 2012
Location: North Devon
Posts: 4794

There maybe someone local to you who can rebuild it. There is a company near me that repairs motors and they're quite reasonably priced

2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
Instagram http://www.instagram.com/george_grafton

6th Feb 2017 4:53pm

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