Similar to services that check fuel injectors. Their resistance are in spec but want to know if they flow ok and aren't clogged or sticking.
Any place that flow tests transmission solenoids?
- Thread starter atikovi
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I worked at a shop that had a hydraulic solenoid tester, Only a couple of us knew how to use it so we didn't bench test solenoids for walk-in clientele. We mostly tested Aisin solenoids on it as they were so expensive, Most other solenoids at the time were cheap enough making setting up the machine not worth the effort.
Good luck in your quest.
Good luck in your quest.
8 Mercedes solenoids so not exactly cheap. Already have the valve body out to replace the conductor plate so figure I should test the solenoids, especially since I have one code related to one of them.
If the solenoids are all the same swap positions and see if the problem moves too.
You have any idea what that entails? Draining the fluid, dropping the pan, pulling the valve body. Nope.
There are Performance DTC's & Circuit DTC's....I would've started circuit tests at the Controller Connector & worked my way down to the actual solenoid. Sounds like you're working backwards?
You made it sound like they were really expensive and hard to find. If messing with the valve body is that difficult then just replace the solenoids.
The controller is internal and on the valve body which has a 5 pin connector. No direct way to test solenoids from there. Was getting fault codes for the TCM processor which is a common failure on these 722.9 models, as well as a code for, electrical test of clutch control solenoid failure. The latter could be caused by the former which is why I'm replacing the conductor plate.
