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Power Window No Power at Fuse#1
Power Windows Woes
I am hoping that some kind soul will help me understand where the power comes from for fuse #1 in the luggage compartment. When my Power windows dont work, which is intermittent, there is no power at this fuse posistion at all, even when touching the wire directly. At the #1 Fuse there are 2 wires. The upper is black and the lower is Red/Blue stripe Can anyone tell me if the this fuse #1 is fed voltage via the ignition switch or the Power Window Control Relay 944-615-116-00 PLEASE AND THANK YOU Sorry for the Multiple attempts at posting this question NEWBIE |
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09-13-2017, 02:34 PM
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Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
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P/w
Quote:
Gerry
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." |
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09-13-2017, 04:03 PM
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Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
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P/w
 ^^^^^ From my factory manual. pm me if you need additional help. Best, Gerry
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." |
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09-13-2017, 04:53 PM
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Location: So Cal and So Oregon
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The schematic shows that power comes in the top of the fuse through the black wire from the Passenger Window Control Unit. The red/blue wire runs from the bottom of the fuse to pin 1 of the connector in the frunk to connection 5 of the passenger window switch on driver's side door.
The PWCU gets it's power from the red/black wire at pin 7 which originates on the top side of fuse 5 in the left hand fuse block in the schematic above (the X bus - powered with ignition switch in ON and RUN positions) and pin 2 a large red wire from the top of fuse 2 (the 30 bus - always hot bus). Last edited by SpyderMike; 09-13-2017 at 05:51 PM.. |
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09-13-2017, 05:49 PM
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Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
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Fuse panel connections.
  ^^^^^ You will need to print/cut & tape these two pages.  ^^^^^ Note, the small three fuse block is located in the engine compartment behind a plastic cover. And is not associated with your issue. Fuse #1 and #5 are your fuses of interest. Best, Gerry
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." Last edited by 86 911 Targa; 09-13-2017 at 08:23 PM.. |
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09-13-2017, 08:11 PM
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Power Windows Woes
Thank you all for your responses
Car is a 1986 911 Carrera 3.2 I will start tracing from the information you have provided |
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09-14-2017, 08:46 AM
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You found the solution? Got the exact same problem..
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09-17-2019, 12:25 PM
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Got two 911's 3.2. So tried switching some parts to try and eliminate and to find the problem.
Coupe / non working power windows and sunroof. Targa / working power windows. No voltage on fuse 1 Switched all window levers -> no result + no voltage Switched Power Window Relay -> no result Something else I could try?  ________________________________ 1969 Porsche 912 1.9 Coupe Outlaw 1985 Porsche 911 3.2 Coupe Last edited by Philip7; 09-19-2019 at 12:51 AM.. |
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09-18-2019, 12:27 PM
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I had this problem, checked all the lines, fuses and switches
The solution was the square relay behind the dash clocks H2 |
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09-19-2019, 06:24 PM
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Location: Marysville Wa.
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^^^^ Yup, usually that relay that allows the windows to work after ignition off and before you open the door. Kind of a safety thing. ^^^^
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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09-20-2019, 03:01 AM
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Thought I checked the relay but wasn’t the case.
You guys were right. Relay was the problem. Thanks!
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________________________________ 1969 Porsche 912 1.9 Coupe Outlaw 1985 Porsche 911 3.2 Coupe |
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10-08-2019, 06:02 AM
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Quote:
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Dave Black 1985 911 Carrera M491 |
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04-18-2020, 01:44 PM
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 One of these?
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Dave Black 1985 911 Carrera M491 |
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04-18-2020, 01:55 PM
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Never mind. Located behind the fuel gauge
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Dave Black 1985 911 Carrera M491 |
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04-18-2020, 02:06 PM
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Sorry to take this in a different direction but it is somewhat related. In diagnosing and solving an A/C compressor electrical issue another issue presented itself.
Specifically, after I replaced the black relay for the A/C compressor in the fuse panel, the #1 fuse location (in block 3) for the power windows got really hot, too hot to touch in fact. The fuse didn't blow. But it wanted to melt the plastic that held the brass fuse. The power windows have always worked and continue to work. But in the minute, or so, it took to really heat up that #1 fuse panel position I'd guess I was headed for an issue that could have really ended up in something bad. I felt the wires going in and out of the #1 location and they didn't feel hot (warm, yes). Any places to start this diagnosis? Thanks, in advance, for the assistance. |
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08-15-2020, 02:51 PM
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1985 Porsche 911
1990 Nissan 300ZX
2011 Audi A4
