Manual Transmision Vw 01M

Technical Service Information
O1M Technicians Guide INDEX
CLUTCH APPLICATION SOLENOID APPLICATION INTERNAL WIRE HARNESS & SOLENOID I.D. INTERNAL COMPONENT RESISTANCE CHECK SOLENOID AIR CHECK PROCEDURE VALVE BODY BREAKDOWN SPRING SPECS CHECK BALL LOCATION COMPONENT AIR CHECK PROCEDURE HYDRAULIC SCHEMATICS PARK REVERSE NEUTRAL OVERDRIVE RANGE 1st GEAR OVERDRIVE RANGE 2nd GEAR OVERDRIVE RANGE 3rdGEAR OVERDRIVE RANGE 4th GEAR OVERDRIVE RANGE 4th GEAR TCC ON MANUAL “1” RANGE 1st GEAR VALVE BODY MAPPING / PASSAGE I.D. HARSH 1-2 UPSHIFT T.S.B DIAGNOSTIC TROUBLE CODES MANUAL PROCEDURE FOR RETURN TO BASIC SETUP MANUAL PROCEDURE FOR RETURN TO BASIC SETTINGS

AUTOMATIC TRANSMISSION SERVICE GROUP

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Technical Service Information
VOLKSWAGEN "01M"
PRELIMINARY INFORMATION
The "01M"designated transaxle, shown in Figure 1, first appeared in the 1995 model year and was used in a wide variety of the Volkswagen car lines along with various engine combinations, including the 2.8L V6 engine, as shown in the chart below. The "01M" transaxle is a 4 speed unit, with 4th gear being overdrive, and is equipped with a clutch in the torque converter. Refer to the chart in Figure 1 for theinternal components that are applied in each of the four forward gear ranges. Notice that it has only one freewheel device for 1st gear. Vehicle Cabrio Beetle Golf GTI Jetta Passat "01M" MODEL USAGE CHART Years Engine Size 1995-2001 2.0L (L4) 1998-2001 1.8L (L4), 2.0L (L4), 1.9L Diesel 1995-2001 1.8L (L4), 2.0L (L4), 1.9L Diesel 1999-2001 1.8L (L4), 2.8L (V6) 1995-2001 1.8L (L4), 2.0L (L4), 1.9LDiesel, 2.8L (V6) 1995-1997 2.0L (L4), 2.8L (V6)

The "01M" transaxle is totally electronic controlled and uses a Electronic Control Unit (ECU) to control shift points, apply and release of the torque converter clutch, and line pressure control. This is done using seven solenoids located on the valve body. The solenoid pattern for each gear and the description of operation is provided for you inFigure 2. Electrical signals from various sensors provide information to the ECU about vehicle speed, throttle position, engine coolant temperature, transaxle fluid temperature, gear range selected, converter turbine speed, engine load and engine speed. The ECU uses this information to determine the precise moment to upshift or downshift, apply or release the TCC and what fluid pressures are neededto apply the components. If for any reason the entire electronic control system of the transaxle becomes disabled, or the ECU detects a problem with one of the various sensors that stores a trouble code, all of the solenoids will be de-energized (Turned OFF). This "Safety Mode" operating state of the solenoids forces the transaxle to operate in 3rd gear when the selector lever is in the "Drive"range. We have provided you with an internal wire schematic and case connector pin identification in Figure 3, and a chart in Figure 4 to check the resistance of the solenoids and fluid temperature sensor. Refer to Figure 5 to check solenoid mechanical operation on the bench. Figures 6, 7 and 8 will provide you with exploded views of the valve body and all valve body components along with the namesof each valve. The names of the valves are ATSG interpretations of the valves functions, not Volkswagens. Figure 9 will provide you with the valve body spring specifications that we observed in the valve body that was used for the illustrations, and may be different in the various models. Refer to Figures 10 and 11 for the checkball locations in this unit and Figure 12 for air checks.

Copyright© 2001 ATSG

AUTOMATIC TRANSMISSION SERVICE GROUP

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Technical Service Information
VOLKSWAGEN "01M" FILL WITH VW ATF (G 052 162 A2)

Line Pressure

"CHECKING" FLUID

Required Fluid Level In Pan Bottom Pan Drain Plug Oil Level Check Plug Bottom Pan

RANGE Park Reverse Neutral Dr-1st Dr-2nd Dr-3rd Dr-4th Man-1st

COMPONENT APPLICATION CHART "K-1" "K-2" "K-3" "B-1" "B-2" LOW...