Required tools:
* Multimeter
* Screwdriver
* Mesh or cardboard
Checking Subaru automatic transmission solenoids
1. Removing solenoids
* Loosen the bolts securing the automatic transmission pan.
* Remove the automatic transmission pan and drain the transmission fluid.
* Unscrew the bolts securing the solenoid control unit.
* Remove the solenoid control unit along with the solenoids.
2. Electrical check
* Set the multimeter to resistance (ohms) mode.
* Connect one multimeter probe to the positive terminal of the battery and the other probe to the solenoid connector.
* The solenoid typically has a resistance of 8 to 12 ohms. Deviation from this value indicates a malfunction.
3. Hydraulic check
*Pour a small amount of transmission fluid into a mesh or cardboard.
*Connect the solenoid to a 12V power source (such as a battery).
* Immerse the solenoid in liquid.
*A working solenoid will allow fluid to pass through the hole in the core.
4. Assembly
* Replace faulty solenoids.
* Install the solenoid control unit using new bolts.
* Install the automatic transmission pan using new bolts and gaskets.
* Fill the automatic transmission with transmission fluid.
Adviсe:
*Always disconnect the negative terminal of the battery before performing any work on the transmission.
*Use proper tools and follow safety precautions.
*If you are unsure of your abilities, consult a professional mechanic.