General Information

Automatic Transmission 01M, General Information

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

Torque Converter
Torque converter is equipped with lock-up clutch. Lockup clutch is closed depending on load, 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 System.

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 adaptation of gear change points in all driving situations
^ Gear change points are infinitely variable

Gear Change Point Variations For Gradients
A gear change map 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 braking effect of engine