E 500 4MATIC Wagon (211.283) V8-5.0L (113.969) (2004)
Component Identification
Task
The fully integrated transmission control (VGS) control unit (Y3/8n4) determines the instantaneous operating condition of the vehicle and actuates all
gear change sequences taking ease of shifting and driving situation into consideration. It receives operating data as transmission-internal input signals
from the:
^
Selection range sensor (VGS) (Y3/8s1)
^
Transmission oil temperature sensor (VGS) (Y3/8s2), which is integrated into the fully integrated transmission control (VGS) control unit
(Y3/8n4)
^
Turbine speed sensor (VGS) (Y3/8n1)
^
Internal speed sensor (VGS) (Y3/8n2)
^
Output speed sensor (VGS) (Y3/8n3)
In addition via the Controller Area Network bus class C (engine compartment) (CAN-C) there is a connection to the:
^
Instrument cluster (A1)
^
CDI control unit (N3/9), with OM 642, OM 629
^
CDI control unit (N3/10), except OM 642, OM 629
^
Electronic selector lever module control unit (N15/5)
^
ESP, SPS [PML] and BAS control unit (N47-5)
^
DTR control unit (N63/1) up to 31.5.04 or DTR controller unit (A89) as of 1.6.04, with code (219) Distronic (DTR)
^
EIS [EZS] control unit (N73)
^
Central gateway control unit (N93)
The fully integrated transmission control (VGS) control unit (Y3/8n4) actuates the following control solenoid valves depending on the processed input
signals:
^
Working pressure control solenoid valve (VGS) (Y3/8y1), for load-dependent and gear-specific operating pressure control
^
Clutch control solenoid valve K1 (VGS) (Y3/8y2)
^
Clutch control solenoid valve K2 (VGS) (Y3/8y3)
^
Clutch control solenoid valve K3 (VGS) (Y3/8y4)
^
Brake control solenoid valve B1 (VGS) (Y3/8y5)
^
Brake control solenoid valve B2 (VGS) (Y3/8y6), which also actuates the BR multi-disk brake for reverse gear
^
Brake control solenoid valve B3 (VGS) (Y3/8y7)
^
Torque converter lockup clutch control solenoid valve (VGS) (Y3/8y8)
This involves the processing of the following data from other systems:
CDI control unit (N3/9), with OM 642, OM 629