IPD sale XeMODeX - Experts in Volvo Electronics

Get email notification of topic replies. Log in or register (free). Amazon Link Buy anything with this and it helps MVS!

Wipers and Washers stopped working (after jump start) - 99 S70 NA

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Post Reply
User avatar
smacknab
Posts: 445
Joined: Wed Sep 25, 2019 4:23 pm
Year and Model: 99 s70 NA Manual
Location: Boston
Has thanked: 73 times
Been thanked: 17 times

Wipers and Washers stopped working (after jump start) - 99 S70 NA

Post by smacknab »

Hello everyone,

Second post here for my 99 S70 NA. My wipers and washer fluid stopped working, I believe after receiving a jump start. I checked and replaced the 25a fuse but no luck (funny enough my horn isn't working either, but from what I've read the horn is often a contact problem).

I have the repair manual diagram, and I'm guessing since both the wiper and washer aren't working it could be either the other fuse(?), The overload relay x, overload relay 15, the wiper/washer relay (I have one of those VW '9.9' relays on the way) or the switch. Anything I'm missing? Any tips for diagnosis? Any similar experiences after a jump start?

Also does anyone have any ideas why Overload Relay 15 (55) isn't on my diagram?

This is one of this things in the way of passing inspection and keeping this thing on the road, so I'm hoping it doesn't balloon into a larger problem.

Thanks as always!
Sean
Attachments
Diagram from Haynes manual
Diagram from Haynes manual
99 s70 NA Manual - >220k miles
Mods: Accidental C70 Delta link, V70 Left Dog Leg
User avatar
abscate
MVS Moderator
Posts: 22444
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 374 times
Been thanked: 1166 times

Re: Wipers and Washers stopped working (after jump start) - 99 S70 NA

Post by abscate »

Abscates 1,000,000 dollar book on electrical troubleshooting



Find the 12 V at the motor, work backwards until you find where the voltage stops. Start where you know the problem is, at the non-working thing.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
User avatar
BEJinFbk
Posts: 3754
Joined: Sat Jan 05, 2008 10:32 pm
Year and Model: '98 V70 R
Location: Fairbanks, Alaska
Has thanked: 25 times
Been thanked: 56 times

Re: Wipers and Washers stopped working (after jump start) - 99 S70 NA

Post by BEJinFbk »

I've always been a Haynes fan, but IMHO
Volvo has the better wiring diagrams...
1998 x70 Washers - Wipers.pdf
(635.79 KiB) Downloaded 14 times
'98 V70 R - Well Equipped for Life Up North... ;)
User avatar
abscate
MVS Moderator
Posts: 22444
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 374 times
Been thanked: 1166 times

Re: Wipers and Washers stopped working (after jump start) - 99 S70 NA

Post by abscate »

abscate wrote: Sat Oct 05, 2019 3:07 pm Abscates 1,000,000 dollar book on electrical troubleshooting



Find the 12 V at the motor, work backwards until you find where the voltage stops. Start where you know the problem is, at the non-working thing.
I,was on crack when I,wrote that.


Start at then12 v supply at the motor where it is missing. Then trace back until you find the 12 Volts present.

That locates the fault
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
User avatar
smacknab
Posts: 445
Joined: Wed Sep 25, 2019 4:23 pm
Year and Model: 99 s70 NA Manual
Location: Boston
Has thanked: 73 times
Been thanked: 17 times

Re: Wipers and Washers stopped working (after jump start) - 99 S70 NA

Post by smacknab »

BEJinFbk wrote: Sun Oct 06, 2019 3:04 pm I've always been a Haynes fan, but IMHO
Volvo has the better wiring diagrams...

1998 x70 Washers - Wipers.pdf
Wow yeah this is way more clear for actually working on the car! Any chance you know where I could find a diagram like this for the horn?
99 s70 NA Manual - >220k miles
Mods: Accidental C70 Delta link, V70 Left Dog Leg
User avatar
RickHaleParker
Posts: 4694
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 603 times

Re: Wipers and Washers stopped working (after jump start) - 99 S70 NA

Post by RickHaleParker »

smacknab wrote: Wed Oct 09, 2019 11:54 pm Any chance you know where I could find a diagram like this for the horn?
Search for Volvo document TP3932202.
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD.
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
User avatar
smacknab
Posts: 445
Joined: Wed Sep 25, 2019 4:23 pm
Year and Model: 99 s70 NA Manual
Location: Boston
Has thanked: 73 times
Been thanked: 17 times

Re: Wipers and Washers stopped working (after jump start) - 99 S70 NA

Post by smacknab »

Forgot to get back to this, looks like I had replaced the wrong fuse when this issue popped up. I went back to check it and found the blown wiper/horn fuse. Replaced that and it all works well now. Obviously this was a clear problem with a clear solution, so ce they're on the same fuse, but a simple mistake almost sent me down a long troubleshoot. Lesson learned!
99 s70 NA Manual - >220k miles
Mods: Accidental C70 Delta link, V70 Left Dog Leg
Post Reply
  • Similar Topics
    Replies
    Views
    Last post