How to verify this transmission data
The Aisin TF-80 / AF40 profile is a starting guide for fluid selection, service planning and code interpretation. Confirm the transmission code through a VIN-based parts catalog, service label or manufacturer maintenance data. Torque rating, software calibration, filter type and fluid-change procedure can vary by model, market and production year.
For transmission faults, check fluid level and condition, leaks, battery voltage and stored codes together first. Before blaming solenoids, mechatronics, clutches or the torque converter, confirm live data and service history.
Applications
- Volvo
- Saab
- Opel/Vauxhall
- Peugeot
- Citroen
Fluid and service notes
- Fluid: JWS 3309 or OEM-specified fluid depending on variant.
- Fluid condition and correct specification are important.
- Valve body wear can mimic solenoid faults.
Common failures
- Shift flare
- Valve body wear
- Harsh engagement
- Torque converter lockup issues