S40 (New) Electrics : - Using a Wiper motor for another purpose - Page 2

Sibbers2008 · Jan 5th, 2019, 20:06

Quote:

Originally Posted by andy_d

As both signal leads come from the CEM, WITH a square wave signal, denoting Pulse Width Modulation,
Just stuffing 12vdc into it will do nothing.
the electronics IN the wiper motor unit are expecting a PWM signal to work them , not 12vdc.

IF you are only wanting the motor to run at a constant speed then taking the unit Apart
Removing the electronics board/boards and finding the + and - connectors to JUST the motor applying 12vdc to those will do what you want.

You are a genius !!! the motor spins perfectly!

I ripped out the enormous circuit board, attached the + and - to the brushes and BINGO !!

Many thanks for your help, now go and have a beer !

ASt85 · Jan 6th, 2019, 09:54

Great work and advice andy-d thank you.

Bigchewie · Jan 8th, 2019, 22:51

surprised no ones has asked but whats this gadget?!?! intrugued.

Jan 6th, 2019, 09:54	#12
ASt85 Premier Member Last Online: Yesterday 19:03 Join Date: Aug 2010 Location: Walderslade....Kent	Great work and advice andy-d thank you. __________________ The saddest moment is when the one who gave you the best memories....becomes a MEMORY V70 SE 2004 2.3L T5 Geartronic, C70 2005 2.0T Automatic, Sold 2.4l 20 Valve Automatic Torslander Sold 854 GLT 20v Auto

Jan 8th, 2019, 22:51	#13
Bigchewie Member Last Online: Apr 2nd, 2024 21:40 Join Date: Feb 2016 Location: West Lothian	surprised no ones has asked but whats this gadget?!?! intrugued.

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