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Discussion summary
YOUR RESEARCHTrouble shooting why exterior mirrors don't work
Reported or suspected cause
solenoid
Reported cause
No successful repair reported for this finding.
1
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0
Suspected cause
0
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Reported cause
I found that you can open up the motor mechanism and the one I had problems with, the issue was the solenoid.
Leading evidence: 'solenoid' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'solenoid' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Test without killing them' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suspected cause · Original poster
So I think the problem is elsewhere, unfortunately.
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Suggestion · Original poster
And if the motors are ok I want to do testing without killing them.
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5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Forum Australia: 1 discussions
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Generation: 20261026T183130Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi all. I am trying to identify why neither the left nor right exterior electric mirrors on my 1981 924 Turbo work.
At the control switch in the driver's door I have 6 wires, as follows:1
A) Brown. This is a direct permanent ground connection.
Brown. This is also a direct permanent ground connection.
C) Black/Purple. This is 12v+ with ignition on (zero v with ignition off)
D) Blue. ????
E) White. ????
F) Green. ????
Of course there is also the mirror selection switch with three wires (green, Blue and Black). I am not at this stage concerned with the selection switch. I can toggle that when testing if necessary.
What I want to do is bridge certain pins (above) to see if I can get either motor to do anything at all, to try to eliminate failure of both motors or at least to try to chase the cause of the problem to a particular part of the circuit. And if the motors are ok I want to do testing without killing them.
I have ordered a Haynes 924 Turbo manual, that has yet to arrive. Have searched other threads too.
Suggestions / advice / assistance etc all most welcome
Thanks
DaveO
Been a while, but pretty sure you can put 12v to the blue/white/green wires as they control up/down/left/right
https://rennlist.com/forums/924-931-944-951-968-forum/230410-does-anyone-have-a-picture-of-the-wiring-for-the-power-mirror-switch.html
In my experience, it is typically the switch (joystick) on the door
Dave, I had a similar problem on my early 944.
There are 6 wires of which 2 are for the mirror heater, 2 for the motor and 2 for the solenoid. I got hold of the wiring diagram included in that Rennlist link above but the colours were different. I found that you can open up the motor mechanism and the one I had problems with, the issue was the solenoid. A fork had displaced itself.
The connection plugs in the door are a real problem as the pins are hard to remove and they were very corroded. I replaced them with Deutch plugs.
If you are testing in situ you need the centre toggle switch connected.
Cheers.
Thanks Jaffar. I will let it all percolate for a few days while I do other stuff, and will spend that time really getting to thoroughly understand that part of the wiring diagram.
I've been spending time today getting front bumper : mudguard gaps right. RH side is spot on I think. LH side is acceptable, maybe another 1-2 mm of adjustment required.
It will be a couple of weeks before I can return to this project, by which time my new carpet should have arrived.
Cheers
DaveO
And thanks P-Kay too for the wiring diagram. I have four toggle switches to choose from, 2 new, 2 used. No luck with any of them. So I think the problem is elsewhere, unfortunately.
Cheers
DaveO
