The Toyota A340H 4-speed automatic transmission was produced in Japan from 1993 to 2007 and was installed on all-wheel drive versions of passenger models such as the Altezza, Chaser, Cresta and Progres. There are two different versions of this gearbox: the standard AW31-80LE and the reinforced AW31-80LS.
Specifications
| Type | automatic transmission |
| Number of gears | 4 |
| Type of drive | all wheel |
| Engine volume, l | up to 3.0 |
| Torque output, Nm | up to 300 |
| Recommended oil | Toyota ATF Type T-IV |
| Oil capacity, liter | 8.3 |
| Partial replacement, liter | 3.5 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~400 000 km |
| Weight, kg | 79 |
Gear ratios Toyota A340H
Using a 2001 Toyota Altezza with a 3.0 liter engine as an example:
| Main | 4.3 |
| 1st | 2.804 |
| 2nd | 1.531 |
| 3rd | 1.000 |
| 4th | 0.705 |
| Reverse | 2.393 |
Using
The transmission was installed on:
- Toyota Altezza 1 (XE10) in 2000 – 2005;
- Toyota Brevis 1 (G10) in 2001 – 2007;
- Toyota Chaser 5 (X90) in 1993 – 1996;
- Toyota Chaser 6 (X100) in 1996 – 2001;
- Toyota Cresta 4 (X90) in 1993 – 1996;
- Toyota Cresta 5 (X100) in 1996 – 2001;
- Toyota Crown 10 (S150) in 1995 – 2001;
- Toyota Crown 11 (S170) in 1999 – 2003;
- Toyota Mark II 7 (X90) in 1993 – 1996;
- Toyota Mark II 8 (X100) in 1996 – 2000;
- Toyota Mark II 9 (X110) in 2000 – 2004;
- Toyota Mark II Blit 1 (X110) in 2002 – 2007;
- Toyota Progres 1 (G10) in 1998 – 2007;
- Toyota Verossa 1 (X110) in 2001 – 2004.
Disadvantages of the Toyota A340H gearbox
- This is a reliable automatic transmission, but it is fitted to sporty models with powerful engines;
- That is why the torque converter lockup clutch wears out quickly with overly active owners;
- This debris then clogs the valve body and jerking appears when shifting;
- If you keep driving without paying attention, the oil pump bushing will be destroyed;
- Heavy leaks then begin, and the planetary gearset is very sensitive to a low oil level.
