Procedure before repairs: 4HP20 automatic gearbox
XANTIA · Repair procedures · HP20 (AG) AND BVA4 · Repair procedure · Reference E2AM07P0
In the event of a gearbox malfunction, there exist 2 possible configurations depending on the severity of the fault : Gearbox in back-up mode with a substitute programme (the default values are used) Gearbox in back-up mode with an emergency programme This means that the gearbox is in hydraulic 3rd…