Spoiler Light Hack

[Gary (Fl)]

Added the MA shaw GT2 spoiler to my 02 TT. They said a wiring harness came with it but of course it did not. What do I have to do to get the malfunction light to stay off?

Thanks

[Itzkirb]

Gary, I don't know about the hack but wanted to ask you about the quality of the MA Shaw wing?

[Loren]

You likely need the spoiler wiring harness from the TT Aerokit (also a fixed wing). The part number is: 996 612 070 30 Wiring Harness.

This a simple harness that goes from the passenger side of the body (near the lid shock post) to the deck lid wiring.

[sharkster]

Gary, I don't know about the hack but wanted to ask you about the quality of the MA Shaw wing?

That's really odd. I have the same wing (CF) and mine did come with the harness which nulled the hydraulics. I would call Mike and ask him to send you one or indeed just try Loren's solution because that sounds like it would do the job. All you want to do is to "fool" it into thinking the wing is down. If you're good with wires, hacking etc... you can actually do it without a harness. I know that David(V) in Virginia with the black 01 TT did exactly that.

[Iceyankee-Tsi]

Hi everybody:

The definite solution to the check spoiler warning in the dash for the minimum amount of 0 dollars with cero cents!!!! This is from my 2001 911 turbo and I understand it applies to all other 996 turbos since the system is the same.

It all goes down to look for the appropriate switch combination that will fool the ECU to think that the spoiler is upward all the time at the spoiler ramp micro-switches. All this was performed in the spoiler-engine cover stock harness. I have attached two pictures. One illustrates the right spoiler ram assembly(looked from the rear). This is the ram that has attached two micro-switches. One of them has a blue cable and a black cable and the other switch has a gray cable and a black cable also. These switches do not perform alike. What I mean is that when one of the switches is depressed, it provides continuity between both of its cables. While the other switch opens its circuit.

As seen in the second picture, I removed the assembly to show how it works. The little metal clip makes contact with the inner sleeve of the ramp as there are two cut-outs in the ramp that allows contact between the clips and the ramp sleeve.( There are two metal clips but i lost one of them today). When the spoiler is downward, these two clips(hence the switches) are pressed. This switch combination tells the ECU that the spoiler is downward. When the spoiler is fully extended, both clips are released and the switches as well. Hence, telling the ECU that the spoiler has been extended.

In order to get rid of this spoiler warning for ever you will have to do the following:

Simply simulate the position of the spoiler extended with the switches by disconnecting them from the spoiler ramp bracket and securing them in the released position. Or the same thing without the switches:

1- Make the gray cable and the black cable have continuity at all times. This can be done by cutting the cables from the switch and connecting them together.

2- Cut the cables from the micro-switch that have the blue cable and black cable and isolate them with electrical tape in order to prevent continuity from them.

Finally, remember to disconnect the plug of the spoiler switch control in the dash, since as you may imagine if for some reason you press the "spoiler downward" option the warning will appear. This will happen since after a few seconds of the ECU not receiving the micro-switch combination of the "spoiler down" status it may think that something has gone wrong.

I have done this today with absolute success. My testing included several 70 MPH pulls with no spoiler warnings. Hence, it is proven. Any doubts, just let me know.

Best regards, Andres

Edited February 10, 2009 by Iceyankee-Tsi