General System Description
OVERVIEWThe 01F transmission operation is controlled by the Transmission Control Module (TCM).
The TCM collects information from various sensors and other control modules such as the M.P.I. Engine Control Module (ECM) for engine management information and the ABS Control Module for information about road speed.
After evaluating this information, the TCM generates output signals to the actuators.
The TCM also generates output signals to the M.P.I. ECM (to retard ignition timing during upshifts and downshifts) and the A/C Control Head (to switch off the A/C compressor clutch under full throttle acceleration.)
TCM for the 01F transmission has a permanent fault memory and self-diagnostic capabilities.
The TCM's self diagnostics can be accessed using the V.A.G 1551 Scan Tool or a generic scan tool via Rapid Data Transfer. Not all functions of the self diagnostics are availible using a generic scan tool. Data cannot be transferred via Blink Code Output because the "L" data wire has been eliminated.
If the TCM detects missing or implausible input signals, or the TCM fails, the transmission will go into one of two emergency running modes. The Emergency Running Mode level depends on the nature of the failure.
TRANSMISSION CONTROL INPUTS AND OUTPUTS
Transmission Control System Layout For The 01F Transmission:
Layout of the 01F transmission used in the Quattro models.