PeachParts Mercedes-Benz Forum - aux water pump gets not enough voltage

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hkkle

10-12-1999 11:22 PM

Mine is a 82 300DT, 123.133. The pump got only 10 volts. I rebuilt the ACC unit, and it is working fine now. The A/C is out. Please tell me which circuit controls the pump? My fuse #8 @16 amps is getting very hot. It melts the plastic fuse body. Any help?

mbdoc

10-13-1999 07:48 PM

On almost all ACC systems the "mono" heat valve gets power directly & the ground is controlled by the pushbutton.

hkkle

10-13-1999 11:57 PM

The mono valve insert is new and is working. My problem is the little electric aux water pump. Which circuit drives the little bugger? Thanks.

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