Why only 2WD ?

Just imported a SVX 1992 from Germany to Denmark.
The powerlight flashes 16 times when car started ;-((

The car only pull with rear axle, absolut no pull from front wheels ??
Tryes it on a hill with ice, but only the rear axle was spinning, and car could not go up the hill ;-((

If I put a fuse in the fuseholder for the shut of diff-lock, the diff-
locklight still not light.

I understand that US-models has a "FWD" fuseholder, but mine only has the "diff-lock" fuse holder.

The gearbox shift fine, and oil is fine red.
When car is perked and transmission-stick is in pos. "P" front wheels are locked.

Any bet on was can be wrong ??
I hope maybe some electric ;-))


Regards

Heine Holten
Denmark

[oab_au]

Originally posted by Holtenauto
Just imported a SVX 1992 from Germany to Denmark.
The powerlight flashes 16 times when car started ;-((

The car only pull with rear axle, absolut no pull from front wheels ??
Tryes it on a hill with ice, but only the rear axle was spinning, and car could not go up the hill ;-((

If I put a fuse in the fuseholder for the shut of diff-lock, the diff-
locklight still not light.

I understand that US-models has a "FWD" fuseholder, but mine only has the "diff-lock" fuse holder.

The gearbox shift fine, and oil is fine red.
When car is perked and transmission-stick is in pos. "P" front wheels are locked.

Any bet on was can be wrong ??
I hope maybe some electric ;-))


Regards

Heine Holten
Denmark

Gid'ay Heine, Joined the forum in time for Christmas. Welcome.

The Euro model that you have is different to the US model. From what you say, it would appear that the Limited Slip Clutch is not operating, thats why it is spinning the rear wheels. This clutch is in the rear of the gear box, in the same position as the clutch in the US model. It can be repaired without removing the gear box, just the back section.

The 16 flashers of the power light, indicates that there is a fault code stored in the Transmission Control Unit. This can be found by following the procdure in the " how to locker".

When the Diff lock fuse is inserted, the Limited Slip Clutch should lock the front and rear wheels together in 4WD, and the Diff Lock light on the dash should come on. You say that the light does not come on when you do this, and the diff won't lock-up. This looks like there is a electrical fault in the TCU, as both the light and the diff lock-up, is controlled by the TCU. I don't think there is anything wrong with the gear box itself.

If you click on my locker, there are scans from the WSM of the type of AWD that you have. If you need anything more, just come back.

Harvey.

[SVXRide]

Harvey,
This one has me confused....how could only the rear wheels be turning? It has been my understanding that when things go bad - drivetrain wise - you'll have either FWD only or nothing.
-Bill

[oab_au]

Originally posted by SVXRide
Harvey,
This one has me confused....how could only the rear wheels be turning? It has been my understanding that when things go bad - drivetrain wise - you'll have either FWD only or nothing.
-Bill

Yes that is the case with the Transfer clutch system, but he has an Euro model that has the VTD AWD system. In this one the front or rear wheels can spin. The rear are the most likely, as they have 64% of the torque applied to them.

The clutch that we have does not transfer torque to the wheels, it just acts as a limited slip clutch to prevent wheel spin regardless if it is front or rear.

I have been doing a drawing of both AWD systems to show the difference, I'll post it when I've finished it.

Merry christmas to all.Harvey.

Thanks for the warm Welcome ;-)

Can a Subaru dealer "reset" the Transmission Control Unit ??

Will it maybe help ?

Can I drive carefully with only RWD ??

Transmission Control Unit, can it be fixed whan bad, or shall I save some money for a new ;-)

[NiftySVX]

A flashing power light indicates that, during the self test function,(the control module checks all the attached gadgets) a component signal came back that was abnormal. The trans control unit is just the messenger. It cannot be re-set. the code will go away as soon as the malfunction/abnormality is corrected (for OBD 1) I suspect you have a transfer duty solenoid stuck closed. Due to the nature of the differential, the axle that is spinning fastest will receive practically all of the power, (this is why the multi-plate clutch is used) so it is likely that your car just acts like it is 2WD as soon as slippage occurs.
The code stored in the TCU will tell you what failed the self-test-you are lucky it has a code to steer you in the right direction!
Hope this helps!
You guys suck! I want VTD too!

NiftySVX

[oab_au]

Originally posted by Holtenauto
Thanks for the warm Welcome ;-)

Can a Subaru dealer "reset" the Transmission Control Unit ??

Will it maybe help ?

Can I drive carefully with only RWD ??

Transmission Control Unit, can it be fixed whan bad, or shall I save some money for a new ;-)

Hi Heine, You need to do the self test, that Phil posted on the European Forum. This will show a coded number, flashed on the Power light. This number will tell us what the trouble is. It could be the Clutch solenoid in the back of the box, but as the "Diff Lock" light does not come on, I think it may be something else. Do the test first, and we can go on from there.

Yes you can still drive the car, but you must try not to spin the wheels. You still have both front and rear wheels driving, It is just that if one set spin, the other set will not drive.

To help you start off with out spinning the wheels, you may try useing the Manual button on the shift lever. This will start the car in 2nd to reduce the power to the wheels.

Follow the procedure that Phil posted, to find the cause.

All the best.
Harvey.

Today I maked the selftest.

First to find an existing problem; I got "24"

Then test to find Previous problems; I got "24 and 25 and 31"

Hope someone can tell me if I got big problems or small problems.

I am not a proff. but can do a little by my self.

To day i drowe a little on a muddy way, when starting the rear axle was spinning, but when driving about 30 mph and then make a kickdown rear axle was not spinning. Maybe I have AWD, but only when car is moving or ??

[oab_au]

Originally posted by Holtenauto
Today I maked the selftest.

First to find an existing problem; I got "24"

Then test to find Previous problems; I got "24 and 25 and 31"

Hope someone can tell me if I got big problems or small problems.

I am not a proff. but can do a little by my self.

To day i drowe a little on a muddy way, when starting the rear axle was spinning, but when driving about 30 mph and then make a kickdown rear axle was not spinning. Maybe I have AWD, but only when car is moving or ??

Gid'ay Heine, not big problems, just middle size.

The code 24 is for the C solenoid that is in the back of the box, and works the Limited slip clutch. As the TCU has stored this code, it looks like you will have to take it to a Subaru dealer, or workshop to get the All Wheel Drive fixed.

The gear box does not have to come out, the C solenoid assemble can be removed from the back section only. The cost to do it in Australia is about A$300.00. and will take about 2 to 3 hours.

You do have AWD, but the limited slip clutch can not stop the wheel spin when starting. To stop the wheel spin, use the Manual button on the shift lever, if you press it in, the car will start in 2nd gear. This is for driving on ice and mud.

The other two codes, 25,31 are because of the C solenoid is not working. They will go when the Solenoid is fixed. This Solenoid assemble is different to the US model, the part No. is 31952AA030.

All the best .
Harvey.

What is a C solenoid ??

I am not so good at English, so please explain it a little more ;-))

Now where You found the fail ;-)) can I drive normally in the car until the C solenoid is fixed ??

The partnr. You gave me, is that the one for Euro-model ?

I think it is a little funny; Buy a car from Japan in Germany, import it to Denmark, and now gets help from Down Under ;-))

[oab_au]

Originally posted by Holtenauto
What is a C solenoid ??

I am not so good at English, so please explain it a little more ;-))

Now where You found the fail ;-)) can I drive normally in the car until the C solenoid is fixed ??

The partnr. You gave me, is that the one for Euro-model ?

I think it is a little funny; Buy a car from Japan in Germany, import it to Denmark, and now gets help from Down Under ;-))

Hi Heine, The gear box has a number of electric solenoids that work different parts of the gearbox. The A solenoid works the oil pressure, the B solenoid works the torque converter lock-up clutch, and the C solenoid works the Limited slip clutch that you are having trouble with.

The limited slip clutch is located in the rear part of the gearbox, with the AWD differential. This drives the front and rear wheels, but as with normal rear wheel drive cars, If one rear wheel spins, the other rear wheel won't drive. Our car has a center diff that works like that. If the rear wheels spin, then the front won't drive, or if the front wheels spin the rear wheels won't drive.

When the Transmission Control Unit detects wheel spin from front or rear wheels, it sends a signal to the C solenoid to apply oil pressure to the clutch, to stop the wheel spin. Your C solenoid is not working, so the wheel spin is not stopped.

You must try to prevent the spin by reducing the power that you give it. It is ok to drive it till you can get it fixed, it won't hurt the transmission. Did you find the Manual button helped to prevent the spin?

Yes it just shows the way this SVX forum works, around the world, just one close family.

Harvey.

Hello

To day i talked with a dealer.
He says from part No. You gave that price is only Euro 1,50.
That is about A$ 3,00 I think.

Does that sounds right ?????

And one more time; THANK YOU for all the help !!!

Regards

Heine Holten

[oab_au]

Originally posted by Holtenauto
Hello

To day i talked with a dealer.
He says from part No. You gave that price is only Euro 1,50.
That is about A$ 3,00 I think.

Does that sounds right ?????

And one more time; THANK YOU for all the help !!!

Regards

Heine Holten

Gid'ay Heine, no mate I think it is more than that.

I checked back to when another Aussie had the job done here. The C solenoid valve assemble cost A$175.00, and he replaced the Limited slip clutch plates also, while the back of the box was off. These were A$250.00 and the labour to do the whole job was A$150.00.
As long as the dealer uses the VIN no. for your car, to order the parts, they should be right, as they are different to the US cars parts.

The No. that I quoted was on the box that the valve assemble came in. It is called "plate-TRF valve. 31952AA030.

Hope the job goes OK for you.

Harvey.

Hello


Yes the number You gave me was only for a gasket ;-))
Price for Solenoid is Euro 100,- .

The dealer dont know how much time the change will take.

I just think about one thing:

The Fuse I can insert in the "diff-lock" fuse holder, dosent get the Lamp to light.

Can the C-solenoid cause this problem too ??

Regads

Heine Holten

[oab_au]

Originally posted by Holtenauto
Hello


Yes the number You gave me was only for a gasket ;-))
Price for Solenoid is Euro 100,- .

The dealer dont know how much time the change will take.

I just think about one thing:

The Fuse I can insert in the "diff-lock" fuse holder, dosent get the Lamp to light.

Can the C-solenoid cause this problem too ??

Regads

Heine Holten

Sorry about the no. Heine, .

When you fit the fuse, it signals the TCU, to lock the diff. I think that as the TCU knows that the C solenoid has an electrical problem, and can't be turned on, it also won't turn the light on.

I reckond it work ok when the solenoid is fixed.

Harvey.