Can I Check If The Rear Wiper Motor Is Broken Or If It's Just The

[Atari Boy 11]

As above really, the rear wiper is not working, before I buy another motor is it possible to check if it is just the relay – without having another relay to swap over that is?

I have a multi metre although I am by no means an expert with it.

 

Many thanks

 

I have searched but could not find anything relevant.

Edited May 20, 2010 by Atari Boy

[stutto 0]

Not a direct answer to your question but I changed the relay for a roughly similar el cheapo and it did sweet FA.

 

Once the original motor was off the hatch you could see a large rust trail on the side that is hidden when it is fitted. My original motor was weak but the reason that I started playing was that it did not park.

[flipperthebushkangaroo 2]

As above really, the rear wiper is not working, before I buy another motor is it possible to check if it is just the relay – without having another relay to swap over that is?

I have a multi metre although I am by no means an expert with it.

 

Many thanks

 

I have searched but could not find anything relevant.

 

Remove the interior tailgate trim, disconnect the wiring to the wiper motor, connect the red lead of the multi meter (set to V DC) to the supply and the black lead of the meter(common) to a suitable earth (bare metal on body would be best) switch the wiper on see if you get around 12v on the meter, might be less depending on battery.

 

If you do not get 12v ish at the meter, switch off remove relay leave black lead on earth and check for voltage at both relay solinoid positive and wiper supply in to relay ( check at relay mount not relay itself obviously. Also check earth to relay while it is off.

 

This should let you know if you have supply at motor (relay ok) & correct supplies to the relay (wiring/stalk ok).

 

Sorry i can't give you the exact details for the wiring but the Pug is not at my house at the moment

 

hope this helps

Roddie

[hothatch 2]

Remove the interior tailgate trim, disconnect the wiring to the wiper motor, connect the red lead of the multi meter (set to V DC) to the supply and the black lead of the meter(common) to a suitable earth (bare metal on body would be best) switch the wiper on see if you get around 12v on the meter, might be less depending on battery.

 

If you do not get 12v ish at the meter, switch off remove relay leave black lead on earth and check for voltage at both relay solinoid positive and wiper supply in to relay ( check at relay mount not relay itself obviously. Also check earth to relay while it is off.

 

This should let you know if you have supply at motor (relay ok) & correct supplies to the relay (wiring/stalk ok).

 

Sorry i can't give you the exact details for the wiring but the Pug is not at my house at the moment

 

hope this helps

Roddie

 

Don't you mean AC mate? Alternating current. DC is for direct current such as house hold electrics. You will not pick anything up on a veichle with DC as its way out of range.

 

Ben

[flipperthebushkangaroo 2]

Don't you mean AC mate? Alternating current. DC is for direct current such as house hold electrics. You will not pick anything up on a veichle with DC as its way out of range.

 

Ben

 

 

And how do you propose to get alternating current out of a battery?

 

No, i'm sure 12V DC in a car, 240V AC in your house plug sockets.

 

for a bit of background reading try this http://www.wereyouwondering.com/what-is-th...ween-ac-and-dc/

 

hope this clears things up

[hothatch 2]

And how do you propose to get alternating current out of a battery?

 

No, i'm sure 12V DC in a car, 240V AC in your house plug sockets.

 

for a bit of background reading try this http://www.wereyouwondering.com/what-is-th...ween-ac-and-dc/

 

hope this clears things up

 

My mistake mate sorry. Always happy to learn me. I was sure of somthing that was completly wrong. ;s !

[timb1046 1]

the house is AC, the car is AC from the alternator, but the car is fed by the battery which is DC. high voltage DC is much more dangerouse than AC, if you touch AC it'll just throw you off, touch DC and it'll make you grip onto it. although at the end of the day it isnt the volts that'll kill you, its the Amps. it all depends where you get shocked too, and what the route the electricity takes through you as to how bad the damage is.

[ade 4wd 11]

The output from a cars alternator is DC. Inside the alternator AC is produced from the coils and then converted to DC by diodes.

[timb1046 1]

of course! i forgot about the inbuilt rectifier inside! :S oops, yeah, the alternator makes AC, but its then rectified, by diodes, before leaving it to got to the battery terminals