Windshield Washer Pump wiring diagnosis???
08-14-2016, 08:42 PM
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1995 Mercedes C36 AMG
Windshield Washer Pump wiring diagnosis???
Back to some C36 repairs and MBW for help:
Recently my wiper pump stopped spraying. (tank full, lines intact)
Initial diagnosis reveals:
1. Both pumps are working. (C36 has one pump for headlights and one for windshield.)
2. One wiring lead is not delivering electricity - I checked this by switching leads between pumps and one worked, one didn't - but both pumps operate.
3. 40A fuse in engine compartment is good. I assume both pumps run off one circuit/fuse - but I don't have wiring diagram.
4. Red/Black wire is not working. Brown Ground checked for continuity and signals okay. Where does Red/Black go after re-entering wiring harness on side of wheel hub? How do I check?
Any help tracing electrical source/fix would be greatly appreciated...
CigarXO
Recently my wiper pump stopped spraying. (tank full, lines intact)
Initial diagnosis reveals:
1. Both pumps are working. (C36 has one pump for headlights and one for windshield.)
2. One wiring lead is not delivering electricity - I checked this by switching leads between pumps and one worked, one didn't - but both pumps operate.
3. 40A fuse in engine compartment is good. I assume both pumps run off one circuit/fuse - but I don't have wiring diagram.
4. Red/Black wire is not working. Brown Ground checked for continuity and signals okay. Where does Red/Black go after re-entering wiring harness on side of wheel hub? How do I check?
Any help tracing electrical source/fix would be greatly appreciated...
CigarXO
08-15-2016, 01:20 PM
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1995 Mercedes C36 AMG
Plutoe - It's a 95, C36 AMG. not sure why I'd need to post the VIN. Thanks for assisting though.
UPDATE: Because one electrical lead is working, I connected it to the windshield pump and left the headlights inop. That gives me a short-term remedy, but would like to fix the other electrical lead. Anyone?
UPDATE: Because one electrical lead is working, I connected it to the windshield pump and left the headlights inop. That gives me a short-term remedy, but would like to fix the other electrical lead. Anyone?
