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Toyota Motor Corporation's A family is a family of automatic FWD/RWD/4WD/AWD transmissions built by Aisin-Warner. They share much in common with Volvo's AW7* and Aisin-Warner's 03-71* transmissions, which are found in Suzukis, Mitsubishis, and other Asian vehicles.
The codes are divided into three sections
- The letter A = Aisin-Warner Automatic.
- Two or three digits.
- Older transmissions have two digits.
- The first digit represents the generation (not the number of gears, see A10 vs A20 and A30 vs A40 vs A40D).
- The last digit represents the particular application.
- Newer transmission have three digits.
- The first digit represents the generation. Note: the sequence is 1,2,...,9,A,B with A and B being treated as digits.
- The second digit represents the number of gears.
- The last digit represents the particular application.
- Older transmissions have two digits.
- Letters representing particular features:
- D = Separates 3-speed A4x series from 4-speed A4xD series
- E = Electronic control
- F = Four wheel drive
- H = AWD Transverse mount engine
- L = Lock-up torque converter