Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Subaru Baja Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Automatic Transmission
- General Description
- Automatic Transmission Fluid
- Differential Gear Oil
- Road Test
- Stall Test
- Time Lag Test
- Line Pressure Test
- Transfer Clutch Pressure Test
- Automatic Transmission Assembly
- Transmission Mounting System
- Extension Case Oil Seal
- Differential Side Retainer Oil Seal
- Inhibitor Switch
- Front Vehicle Speed Sensor
- Rear Vehicle Speed Sensor
- Torque Converter Turbine Speed Sensor
- Control Valve Body
- Air Bleeding of Control Valve
- Shift Solenoids, Duty Solenoids and ATF Temperature Sensor
- Transfer Duty Solenoid and Valve Body
- ATF Filter
- Transmission Control Module (TCM)
- Dropping Resistor
- ATF Cooler Pipe and Hose
- Air Breather Hose
- Oil Charger Pipe
- Torque Converter Clutch Assembly
- Extension Case
- Transfer Clutch
- Multi-plate Clutch
- Rear Drive Shaft
- Reduction Driven Gear
- Reduction Drive Gear
- Center Differential Carrier
- Parking Pawl
- Torque Converter Clutch Case
- Oil Pump Housing
- Drive Pinion Shaft
- Front Differential
- AT Main Case
- Transmission Control Device
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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