Transmission

Transmission
The 4-speed automatic transmission 01M is equipped with 4 hydraulically activated forward gears. When the lock-up clutch is closed, these forward gears become mechanically driven gears by eliminating torque converter slip.

Torque converter
The torque converter is equipped with a lock-up clutch. The lock-up clutch is engaged depending on load and speed and drives 1st, 2nd, 3rd and 4th gears mechanically independent of slip.

On Board Diagnostic (OBD)
On Board Diagnostic is described in Transmission Control Systems.

Transmission Control Module (TCM) -J217- with gear changes based on driving situation (Fuzzy Logic)
Depending on driving situation and driving force resistance, gear change points are determined automatically.
Advantages:
^ Gear changes are fuel consumption orientated
^ Maximum engine output is always available
^ Individual occupation of gear change points in all driving situations
^ Gear change points are infinitely variable

Gear change point variations for gradients
A gear change map also automatically selects gear changes for gradients depending on accelerator pedal position and driving speed.
^ Gear change map for extreme uphill stretches is matched to engine output.
^ Gear change map for extreme downhill stretches is matched to the braking effect of the engine.








Code Letters, Transmission Allocation, Ratios, Equipment

Transmission With Selector Elements:





1 2nd and 4th gear brake -B2-
2 Reverse gear clutch -K2-
3 1st to 3rd gear clutch -K1-
4 3rd and 4th gear clutch -K3-
5 Reverse gear brake -K3-
6 Free wheel clutch
7 Lock-up clutch integrated in torque converter -LC-





Position of selector elements
The provided table shows which selector elements are operated in the individual ranges to help you to troubleshoot poor acceleration and speed performance. The table should help you in determining which selector elements are not operating properly.

All ranges are shifted hydraulically.

All forward ranges are driven mechanically at a predetermined load and speed via the torque converter lock-up clutch.