Hello,
I'm facing rather expensive (so far) problem with my 1995 (1996?) Subaru SVX, originally equipped with VTD transmission. When it failed I swapped it for TZ102YBABA-CF transmission from JDM Legacy GTB (4.44 final drive). I kept EU SVX TCU originally mounted in the car. Car runs and doesn't throw any errors, but there is a binding when doing a slow turns (eg. three-point-turn). It was happening like that for two years since the swap with everybody saying "that's how it works with LSD rear diff" but now (after one diff gave up) I know it should not. The same thing is happening with new diff (4.44 of course, with VLSD). Slight whine can be heard from the diff during "lazy" acceleration. Old diff was whining like crazy on deceleration, and I want to avoid frying another diff or tranny.
Transmission looks to be more or less identical to SVX one, with one visible difference - (front?) speed sensor. EU SVX has two-wire one inside a tranny, and Legacy GTB had a two-wire one but on front bellhousing. What I did was wiring these two wires to original SVX loom in place of internal sensor two wires. No idea if it can work like that, though - maybe number of rotations internal sensor in SVX measured is different than rotations Legacy-type external sensor counts, and that is causing VTD/Duty C to operate improperly, resulting in binding?
I would like to check what each sensor measures, but I cannot connect to TCU through SSM - at all. With RS232 adapter I connect to ECU just fine (JECScan, sending commands manually) but all TCU returns to me is just some gibberish/trash data.
I also modified value in TCU code setting it for 4.44, just as
b3lha advised in this post:
http://www.subaru-svx.net/forum/show...38&postcount=9
Car seemed to shift better after that change, but binding was still there. Also it hadn't fixed my speedometer being off by about 20-30%
Another option is that Duty C Solenoid / valve "simply" failed in this tranny, but before I make sure sensors measure correct speeds I don't want to do it. Finding a matching (JDM) part and someone who will replace it for me in Poland won't be easy.
Anyone can give some piece of advise, or helping hand?