Question about 1998 Volvo V70

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My wipers wont switch off on my v70..will increase speed via stalk but wont this a relay or a new stalk

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I would check the relay by pulling it and swapping another in it's place but it is probably an issue with the stalk

Posted on Mar 16, 2011

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Two years on from the previous I am now getting this. I have dismantled the binnacle around the steering wheel, unplugged the wires to the stalk, then switched on the ignition. Brilliant, the wipers still have a mind of their own so I am going with the relay which is probably stuck in the "on" position. Fantastically my fault also has the windscreen being sprayed with the windscreen wash untill that runs out of fluid. Then the windscreen washer motor just keeps running without any fluid pressure against it so driving until I get a replacement relay is fuse no, 34 (?) in when its wet, out when the weather is dry!

Posted on Apr 30, 2013


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1 Answer

How do I find out if the wipers on my 2006 H3 Hummeris on a relay?

The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Body control module (BCM)
• Wiper micro relay
• Wiper 2 relay
• Wiper diode
• Windshield wiper motor
• Windshield washer pump
• Windshield washer nozzles
• Windshield washer solvent container
• Windshield wiper arm and blade assemblies
• Windshield wiper transmission
• WIP/WASH 10A fuse
• WIPER 25A fuse

Wiper/Washer System Description
The body control module (BCM) controls wiper motor low speed operation. The washer pump and high speed operation are controlled directly by the wiper/washer switch. The windshield wiper/washer switch supplies voltage on the signal circuits to the BCM for windshield wiper/washer operation. When WASH, MIST, DELAY, LOW, or HIGH is detected, the BCM energizes the wiper micro relay by suppling voltage to the relay coil. This allows battery voltage from the WIPER fuse to flow through the relay switched input then through the contacts and out the relay switched output to the wiper 2 relay switch contacts. Since the wiper 2 relay switch contacts are normally closed to the low speed circuit of the windshield wiper motor, the motor will operate at low speed.

Low Speed Operation
When the wiper switch is in the Low position, voltage is supplied through an internal resistor to the signal circuit. The body control module (BCM) monitors the windshield wiper switch signal 1 circuit, and energizes the wiper micro relay which will operate the windshield wiper motor. The wiper motor will operate at low speed, since the wiper 2 relay is de-energized. Low speed can also be commanded with a scan tool, by commanding Wiper Relay Cmd. ON and OFF. Refer to Scan Tool Output Controls .
High Speed Operation
In the High position, the windshield wiper/washer switch supplies voltage to both the wiper micro relay and wiper 2 relay coils. This energizes both relays and allows battery voltage from the wiper micro relay switched output to the switched input of the wiper 2 relay through its contacts and out the switched output of the wiper 2 relay to the high speed circuit of the windshield wiper motor. The windshield wiper motor will operate at high speed. During high speed wiper motor operation the wiper switch signal circuit is at the low speed signal voltage, and the body control module (BCM) supplies redundant voltage to the wiper relay via the wiper diode.

This info is out of hummer factory service manual !

Dec 10, 2016 | 2006 Hummer H3

1 Answer

I think the multi-function switch is bad on my 2005 Ford Taurus SE.The windshield wipers are functioning continuously.The fuse box is located under my hood. Which fuse can I pull to "kill" the wipers?

open the bonnet open the black fuse and relay plastic box. Listen for the relay kicking in or you may be able to feel the relay or look on the cover for the relay location. Pull out the relay .
I have a faulty headlight switch myself and had to hard wire my head lights on with a jump wire. The relay is in my pocket until I can get a new headlight indicator stalk. You may be able to jump wire the wipers with spade connectors to work with a jump wire in case you need wipers until you can replace the wiper stalk .
It could be a stuck relay causing the fault rather than the switch. you need to check if switch causes voltage to turn off accross the relay coil in the relay mount block.

Jul 08, 2015 | Ford Cars & Trucks

2 Answers

My 99 Jeep Grand Cherokee windshield washer pump is stuck on and my front wipers run continuously what can I don to figure this out?

did you scan the PCM first. if not way not. got DTCs'
not necessarily. "mont"
first learn what is there, there are 2 systems. old and new.
lets look at facts in the real fsm.
what is there,? (its new type.,like mine)

see page 2, in wiring wipers there.
see how that works, unlike what mont says.
The wiper driver stalk switch rarely fails.
The wiper has park sense, contacts.
the BCM watches those contracts and does the logic
via the BCM controlled, wiper on/off relay
so id pull that PDC relay first.

that act will stop it.
but not smack that relay hard, (dont wreck it )
then put it back, fixed now, good, get a new one soon.
now, the measure with any volt meter across across relay coil
0vdc is good, key in, wipers

12v dc means the BCM is confused, (it or the input from stalk drivers switch stuck on)

load side,
25407414-cg0iiveyk1aehnlwspos32uf-1-0.jpg see page 1 in fsm
see that when MF switch is off, the high speed feed is 0v.
the BCM input from MFSwitch is infinity off, (no resistance)
at pin 8 of MFS, switch.
if the BCM sees a non open path the BCM will close the relay.
the BCM sees no connection or resistors or pin 9 stuck on high
or mist switch shorted.
that is how it works.

Feb 09, 2015 | 1999 Jeep Grand Cherokee

2 Answers

What is the relay location in the relay box

The problem would be in the stalk controller. The wiper Relay is what provides power to the motor for all settings, the delayed wipers, low speed, and high speed. There are not 3 relays, but 1 for all functions. If you have power to the high setting, the relay is working.

Jul 27, 2014 | 1998 Ford Ranger

1 Answer

New wiper motor new relay new fuse wiper still wont work

check wiper control switch on the steering column stalk

Dec 12, 2013 | 2004 Mercedes-Benz C230 Kompressor

2 Answers

1998 Olds LS wipers not working

i would have replaced the wiper stalk and switch before the motor as it works in full speed mode?? unless there two relays for wipers

Nov 12, 2013 | Cars & Trucks

2 Answers

Windshield wiper control will only work on high speed no delay or low speed.

check wiper relay or possible the stalk itself could have broken contacts

Dec 23, 2009 | 1998 Chevrolet K1500

1 Answer

BMW 1996 3 Series Touring Wipers will not stop/cancel

try looking for the relay box and listen to each relay the one that clicks when the wipers are on
is the one to take out and replace it with a new one or second-hand one but make sure to turn off the car first .

Mar 01, 2009 | 1996 BMW 318

1 Answer

Wipers stay on

There are several possible causes, and maybe a fault code scan would help. You did not say whether the intermittent wipe and various speeds work - do they? In the meantime, check that the wiper stalk is in the correct position.
You could also try removing the front wiper relay to see if that stops them - if so get an auto electrician to try a replacement relay before buying it ;-)
and you could try removing the "rear" wiper fuse - yes rear, if your car has rear wipers. Then please let me know if any of these ideas had an effect! Well take it from there.Thanks, D

Jul 21, 2008 | 2004 Volkswagen Golf

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