Hi guys,
Have an 87 951 and my sunroof doesn't work. After several hours of checking everything turns out there's no power at terminal A at the sunroof relay plug. So if anyone can give me an idea or wiring diagram of where terminal A is that would be great. And I'm open to any other suggestions.

thanks

 

Anyone?!?

Getting grey hairs over this?!?

 

From what I can tell from looking at a early car wiring diagram "A" is not a power supply but rather a signal wire coming from the tachometer economy meter. Sorry but I don't have a late car diagram. But the wiring has mostly remain the same thru out the years.

 

 

You are going need the entire car's wiring diagram and find the "i44" & "d16" continuation. Does the sunroof attempt to move in any direction? Does the radio work?

 

Everything works fine, radio, lights. Now if I jump pins r and 2 on the relay sunroof works like it was before

 

I would need a full copy of that diagram. That one is cut off.

 

 

if you can't make it out. Pm me with your email address and I'll send you the wiring diagram

 

Pm sent.

Are you jumping r and 2 together or powering them with 12 Volt's?

 

ya if I connect r and 2 with the ignition on.

 

Okay, I looked at those diagrams you send over. The A that you asked where it goes, one wire goes to the instrument cluster terminal #15 and is somehow got something to do with the speedometer/economy meter and the other wire goes to the Tempostat Control Unit terminal #1. I'm guessing it's some sort of inter lock for the sunroof???

 

I'm going to study those diagrams more tomorrow but for now it's bed time, marc

 

Okay, I've been studying the wiring diagrams and been reading the Porsche service manual on the sunroof. For such a complicated setup, they are pretty vague on the Sunroof Control relay operation. Anyhow before we go any further, ground the #31 terminal with a jumper wire and see if it starts working.

 

grounded terminal 31 and nothing