Principles of operation: (AL4) automatic gearbox
C4 · Repair procedures · Auto gearbox AL4 AND Auto gearbox AL4 AND 4-SPEED AUTOMATIC GEARBOX · Data - identification · Reference B2CB1ZP0
1. General : Gear selection law The gearbox operating point is defined by the following information : Throttle butterfly position Vehicle engine load and speed In operation, the decision to change gears is taken by the ECU using a set of graphs known as the "selection laws" Each change pattern…