The Audi A4/A6 01J CVT - Technician Diagnostic Guide and Forward Clutch Repair Manual - Basic tear down and re-assembly information with extensive forward clutch repair procedure.

Some Audi A4 and A6 vehicles are equipped with the Multitronic 01J (VL300) Continuously Variable Transmission. One of the more unique features about this transmission is the fact that the Transmission Control Module (TCM) is located INSIDE the transmission with the 25 pin TCM connector for early units and a round 20 pin TCM for later units protruding out of the rear of the unit. This transmission does not use a torque converter, it uses a dual mass flywheel or a flywheel / damper plate assembly depending on the engine size. Another of the unique components of the 01J is the use of a drive chain instead of a belt. This is the first time a drive chain has been used in a CVT application. The TCM operates several internal relays through the same harness as the one that connects to the back of the transmission case. The TCM also communicates with other modules over the CAN network. The Tiptronic gear selection feature provides six (6) or seven (7) manually selected speeds.