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Old 05-28-2007, 11:18 AM
b3lha's Avatar
b3lha b3lha is offline
Phil & Belha
 
Join Date: Aug 2001
Location: Alcyone Limited, Buckinghamshire UK
Posts: 2,671
IT WORKS!

I just did a little road test. I can't (yet) make the power mode come on with software. But I CAN stop it from turning off. I setup my laptop to continuously reset the timer to 10 seconds. Then I gave the throttle a little tap to turn the power mode on....and it stayed on!

I drove around for 15 minutes or so with the power mode on then I stopped the laptop from sending the reset sequence. 10 seconds later, exactly as predicted, the timer ran out and the power mode turned off.



Of course, this is pointless on my JDM car, which has a power button anyway. But it might be a useful trick on Euro and USA cars. I think it's a better way than messing with the TPS signal which might be used for other things elsewhere in the TCU. The disadvantage is that you need a laptop in your car.

It is actually quite simple to do, once you know how:

Step 1: Send the command to read the value of the power mode timer ("4500C100')
Step 2: Send the command to write 255 to the power mode timer ("AA00C1FF")
Step 3: Goto step 1
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1992 Alcyone SVX Version L
1992 Alcyone SVX Version L
1994 Alcyone SVX S40-II
2004 Subaru Legacy 2.5 SE Sports Tourer
1996 Subaru Legacy 2.2 GX Wagon
1988 Subaru Justy J12 SL-II

Last edited by b3lha; 05-28-2007 at 11:21 AM.
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