Transmission Description: Overview

The AW F21 automatic transmission is a 6 speed, electronically controlled unit manufactured by Aisin AW in Japan. The transmission represents the latest in automatic transmission technology for a transverse, All Wheel Drive (AWD) unit. The transmission features lock-up slip control, 'CommandShift™' functions and automatic and driver selectable modes to give the optimum on and off road performance.

The transmission is controlled by a 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 longitudinal direction to the + or - position puts the transmission into electronic manual 'CommandShift™' mode. Refer to External Controls .

The AW F21 transmission has the following features:

• Designed to be maintenance free
• Torque capacity of 450 Nm
• Transmission fluid is fill for life
• The torque converter features a controlled slip feature with electronically regulated lock-up control on gears 2 to 6
• Shift programs controlled by the TCM
• TCM has an adaptive capability to ensure efficient gear shift quality throughout the service life of the transmission
• Diagnostics available from the TCM via the high speed Controller Area Network (CAN) bus.