BigMouse

Without the engine running, the only code it came up with was:

00526 - Brake Light Switch-F
       29-00 - Short to Ground

I then started the engine and revved it high enough to engage 3rd gear and kill the engine as well as activate limp-home mode indicated by the gear select indicator. I got the following code:

00652 - Gear Monitoring
       16-00 - Signal Outside Specifications

Unless the brake light switch 'short to ground' could cause this problem, looks like I'll be getting a manual to swap in. Any ideas from what came up?

Brdman*

there by defult. Documented on the Ross tech website.

tozoM8

If the switch is broken ( short to ground ) the TC is open all the time. If they drove it for a long time with the broken switch it could damage the tranny. If the TC is open on the hwy, it will overheat the tranny, burn the clutch in the TC ( black tranny fluid ) bad fluid will burn the clutches in the tranny.
Normal tranny temperature is 185F, Fluid is good for 100K miles. Every 15% temperature increase will reduce the fluid life by 50%( 200F=50K, 215=35K, 230=12.5K....... . If it goes over 300F it will die in minutes.

BigMouse

Either way, there's no way this is a 'replace the fluid and go' issue ;-)

A6Gary

the Bentley Manual lists several possible causes:

* Incorrect TCM installed
* Incorrect ABS control module -J104- installed
* Open circuit or short circuit between TCM and ABS control module
* ABS Malfunction Indicator Lamp (MIL) lights up
* As least two wheel speed sensors malfunctioning
* Multi-function TR switch -F125- out of adjustment or malfunctioning.

Based on the DTC, I doubt you need to replace the complete tranny.

beep-beep

VAG-COM has mode, where you can test AT solenoids. Can you try it?

BigMouse

And an open or short circuit between the TCM and ABS control module shouldn't cause a complete free-revving no-move situation, right? The ABS light did not come on. When I was testing the transmission with all four wheels off the ground, the light did come on as the speed was increased, but the transmission did shift properly, there's just no 'force' behind it. If remedying the cause of this code would fix the transmission, where do I start? I'm not sure if you've seen my other posts about this issue and are aware of the symptoms. If you still think the tranny doesn't need to be replaced, please let me know what to do.

BigMouse

You know of a way to get VAG-COM to perform the output tests without paying the $100 for a license?

snowman '92 100

Plus, I'm pretty sure the 100 can't test individual solenoids.

tozoM8

Yes, it can.