LR3/Disco 3
The hydraulic and electronic control elements of the transmission are now incorporated in a single unit located
inside the transmission and is known as 'Mechatronic'
Another new strategy is Adaptive Shift Strategy (ASIS). ASIS represents the continuous adaptation of shift
changes to suit the driving style of the driver which can vary from sporting to economical. Further details of the
ASIS function are contained in the 'Driving Modes' section.
The transmission is controlled by an Transmission Control Module (TCM) which contains software to provide operation as
a semi-automatic 'CommandShift™' transmission. The TCM allows the transmission to be operated as a conventional
automatic unit by selecting P, R, N, D on the selector lever. Movement of the selector lever across the gate to the 'M/S'
position puts the transmission into electronic 'Sport' mode. Further movement of the lever in a lateral direction to the + or
– position puts the transmission into electronic manual 'CommandShift™' mode.
The 6HP26 transmission has the following features:
Designed to be maintenance free
Transmission fluid is 'fill for life'
The torque converter features a controlled slip feature with electronically regulated control of lock-up, creating a
smooth transition to the fully locked condition
Shift programs controlled by the TCM
Connected to the ECM via the High Speed CAN for communications
Default mode if major faults occur
Diagnostics available from the TCM via the CAN.
ZF 6HP26 Automatic Transmission – Exploded View
NOTE :
The transmission shown is exploded to the extent of the serviceable items
