Transmission 9113 · 3 73 1 M ultifunctio n switch Data exchange between DM E and T

Transmission 9113 3 73 1 M ultifunctio n switch Data exchange between DM E and T iptro nic co ntro l unit The multifunction switch (MFS) is attached directly to the selector lever bracket and can- not be replaced separately. An additional 2- pin plug for the reverse lamp is attached to The signals between the DME and Tiptronic the MFS. PIN 1 connects earth to the reverse are exchanged via CAN lines, i.e. data blocks lamp. PIN 2 connects terminal 15 to the re- are transferred in both directions via two verse lamp. lines (CAN high and CAN low). These data blocks contain, for example, the following information: DME ? Tiptronic: Engine speed, nominal engine torque, actual engine torque, accelerator pedal position, driver requirements, engine temperature, brake light switch, kick-down, ambient pres- sure. Tiptronic ? DME: Torque reduction, "check engine" prompt, selector lever position, start release, actual gear, shifting active, cooling water shut-off 3_13_00 valve. The MFS supplies information regarding the The data is updated approx. every 10 ms. position of the selector lever to the instru- ment cluster and Tiptronic control unit. Data exchange between P S M and T iptro nic co ntro l unit Pin assignment PIN Terminal Function PSM ? Tiptronic: 1 58 12V 3 31 Earth Shift intervention, vehicle speed, lateral ac- 8 86S 12V celeration, longitudinal acceleration. 2/6/7 Coding lines For instr. 4/5/9/1 Coding lines For ETC Data exchange between in-strum ent cluster 0 and T ip-tro nic co ntro l unit Coding table Selector lever P R N D Instrument cluster ? Tiptronic: position Upshift and downshift button. Line W3 ETC 0 1 1 0 Line W2 ETC 1 1 1 0 Line W1 ETC 1 1 0 1 Line W0 ETC 1 0 1 0 Tiptronic ? instrument cluster: Line W3 instr. 1 0 0 1 Actual gear, selector lever position, limited Line W1 instr. 0 0 1 0 driving program. Line W0 instr. 0 1 0 1 1 = active 0 = not active 3 - 18 Service Information 2002