MERCEDES-BENZ ML350 1997 Complete Repair Manual

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 172 © 2006 Mitchell Repair Information Company, LLC.

Fig. 100: CAN Data Bus
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Task
The electronic selector lever module control module (N15/5) receives digital and analog input signals, converts
these signals and controls various components or transfers information to various control modules via CAN.
In selector lever position "D" lateral touch movements in the "+" or "-" direction are detected by the electronic
selector lever module control module (N15/5) via two contacts and are conveyed to the ETC control module
(N15/3) via the engine compartment bus. See Fig. 99
and Fig. 100 .
The selector lever positions are determined by the slider position of the potentiometer and transferred to the
electronic selector lever module control module 90 (N15/5).
The selection diagram symbols (shift pattern display) are illuminated by means of LEDs when low beam is
switched on.
Input signals:
Selector Lever Position (From Potentiometer (90))
Touch Button +/-
Voltage Supply (Terminal 87)
Power Supply For Reverse Lamp (Terminal 15)
Signal For Shift Gate Illumination (Terminal 58D)
Kickdown Switch (S16/6)
Stop Light Switch (S9/1)
Input & Output Signals:
Datalink connector (X11/4)
Output Signals:
R/P locking solenoid (89)
Power supply and ground for potentiometer
Reverse lamp (via the light module (N7-1)).
Via The Engine Compartment Bus, There Are Connections To The:
ETC (EGS) Control Module (N15/3)
Traction System Control Module (N47)
The Following Information Is Received:

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:27 PMPage 173 © 2006 Mitchell Repair Information Company, LLC.

Traction system control module (N47)
Rear Right Wheel Speed
Rear Left Wheel Speed
The following information is sent:
ETC (EGS) control module (N15/3)
Selector lever position
Kickdown switch (S16/6)
Touch button +/-
Electronic Selector Lever Module Control Module, Design

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 174 © 2006 Mitchell Repair Information Company, LLC.

Fig. 101: Electronic Selector Lever Module Control Module, Design
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Temperature Sensor, Location/Task/Design/Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:27 PMPage 175 © 2006 Mitchell Repair Information Company, LLC.

Fig. 102: Temperature Sensor, Location/Task/Design/Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:27 PMPage 176 © 2006 Mitchell Repair Information Company, LLC.

Courtesy of MECHANICS MONTHLY MAGAZINE
Temperature Sensor, Location

The transmission oil temperature sensor (Y3/6bl) is located in the electrical control unit (Y3/6) and is
permanently connected to the conductor tracks. See Fig. 102
.
Temperature Sensor, Task

To measure the temperature of the transmission oil and pass the temperature to the ETC control unit
(N15/3) as an input signal.
Temperature Sensor, Design

Temperature-dependent resistor (PTC).
Temperature Sensor, Function

See TEMPERATURE SENSOR, FUNCTION
.
Temperature Sensor, Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:28 PMPage 177 © 2006 Mitchell Repair Information Company, LLC.

Fig. 103: Temperature Sensor, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
The temperature of the transmission oil has a major influence on the shift time and thus on the shift quality. It is
possible to optimize the gear shifts in all temperature ranges by detecting the oil temperature. See Fig. 103.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:28 PMPage 178 © 2006 Mitchell Repair Information Company, LLC.

The transmission oil temperature sens or (Y3/6b1) is connected in series with the starter lockout contact
(Y3/6s1). The temperature signal is tr ansmitted to the ETC control module (N 15/3) only the dry-reed contact of
the starter lockout contact (Y3/6s1) is closed.
Selector Valve, Location/Task
Fig. 104: Selector Valve, Location/Task
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Selector Valve, Location

The selector valve (52) is located in th e valve housing of the shift plate (2a). See Fig. 104
.
Selector Valve, Task

Distributes pressure to the appropriate h
ydraulic components according to the selector lever position

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:28 PMPage 179 © 2006 Mitchell Repair Information Company, LLC.

selected by the driver.
Torque Converter Lock-Up Clutch, Location/Task/Design/Function
Fig. 105: Torque Converter Lockup Clut ch, Location/Task/Design/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Torque Converter Lockup Clutch, Location

The torque converter lockup clutch is in tegrated in the torque converter. See Fig. 105
.
Torque Converter Lockup Clutch, Task

The torque converter lockup clutch minimizes the power losses of the torque converter and as a result
reduces the engine speed and improves the efficiency of the transmission.
Torque Converter Lockup Clutch, Design

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:28 PMPage 180 © 2006 Mitchell Repair Information Company, LLC.

The external plate carrier (16a) is connected to the impeller (P) via the cover shell (17). The internal plate
carrier (16b) is connected to the turbine wheel (T).
Torque Converter Lockup Clutch, Function

See Torque Converter Lockup Clutch, Function
. See TORQUE CONVERTER LOCKUP
CLUTCH, FUNCTION.
Torque Converter Lockup Clutch, Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:28 PMPage 181 © 2006 Mitchell Repair Information Company, LLC.