1997 MERCEDES-BENZ ML350 manual transmission

Fig. 141: Torque Converter Lockup Clutch PWM Solenoid Valve
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Structure
The torque converter lockup PWM solenoid valve (Y3/6y6) is sealed off to the valve body of the shift plate (2a)
by an O-ring (34) and a seal (arrow). See Fig. 141
. The contact springs (32) on the PWM converter lockup
solenoid valve (Y3/6y6) engage in a slot in the conductor tracks (33). The force of the contact spring (32)
ensures safe contacts.
Manual Drive Mode Selection, Function (Without Touch Shift)

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Fig. 142: Manual Drive Mode Selection, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
With the selector lever on the floor shift it is possible to adapt the automatic gearshift sequence to suit specific
operating conditions. Although the selector lever position can be changed the forward gears while driving, the
electronic transmission control (ETC) prevents over-revving of the engine. See Fig. 142
.
Floor Shift, Location/Task/Design/Function

See .
Reverse Lamp Switch, Location/Task/Function

See REVERSE LAMP SWITCH, LOCATION/TASK/FUNCTION
.
Shift Detent Mechanism, Location/Task/Design/Function

See SHIFT DETENT MECHANISM, LOCATION/TASK/DESIGN/FUNCTION (WITHOUT
TOUCH SHIFT).
D-4 Shift Isolating Mechanism, Location/Task/Design/Function

See D
-4 SHIFT ISOLATING MECHANISM, LOCATION/TASK/DESIGN/FUNCTION.
Location/Task/Design/Function Of R/P Lock

See LOCATION/TASK/DESIGN/FUNCTION OF R/P LOCK (WITHOUT TOUCH SHIFT)
.
Position Sensor, Location/Task/Function

See POSITION SENSOR, LOCATION/TASK/FUNCTION
.
Transmission Range Recognition Switch, Location/Task/Design/Function

See TRANSMISSION RANGE RECOGNITION SWITCH,
LOCATION/TASK/DESIGN/FUNCTION.
ETC Control Module, Location/Task

See ETC CONTROL UNIT, LOCATION/TASK
.
Floor Shift, 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 3:15:29 PMPage 255 © 2006 Mitchell Repair Information Company, LLC.

Fig. 145: Floor Shift, Function (Without Touch Shift)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
The selector lever is guided and positioned in the shift gate. The selector lever positions "P', "R", "N" and "D"
are transmitted mechanically to the transmission by means of the shift rod. In parallel, all selector lever
positions are transmitted to the ETC control module (N15/3) by means of the transmission range recognition
switch (S16/10) in the floor shift. If the selector lever is moved across from "D" to "4", the selector lever is
isolated from the shift rod. Thus there is no longer any mechanical connection with the transmission. See Fig.
145. The selector lever positions "4", "3", "2" and "1" are then transmitted electronically to the ETC control
module (N15/3) via the transmission range recognition switch (S16/10).
Manual Drive Mode Selection, Function (With Touch Shift)
Transmission with touch shift.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 259 © 2006 Mitchell Repair Information Company, LLC.

Fig. 146: Manual Drive Mode Selection, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
With the selector lever on the floor shift it is possible to adapt the automatic gearshift sequence to suit specific
operating conditions. See Fig. 146
. Although the selector lever position can be changed in the forward gears
while driving, the electronic transmission control (ETC) prevents over-revving of the engine.
Floor Shift, Location/Task/Design/Function

See FLOOR SHIFT, LOCATION/TASK/DESIGN/FUNCTION
.
Shift Detent Mechanism, Location/Task/Design/Function

See SHIFT DETENT MECHANISM, LOCATION/TASK/DESIGN/FUNCTION

Location/Task/Design/Function Of R/P Lock

See LOCATION/TASK/DESIGN/FUNCTION OF R/P LOCK
.
Position Display, Location/Task

See POSITION DISPLAY, LOCATION/TASK
.
ETC Control Module, Location/Task

See ETC CONTROL UNIT, LOCATION/TASK
.
Control Module For Electronic Selector Lever Module, Location/Task/Design

See .
Floor Shift, Location/Task/Design/Function
TRANSMISSION with touch shift.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 261 © 2006 Mitchell Repair Information Company, LLC.

When the kick-down switch (S16/6) is operated via the accelerator pedal a signal is passed on to the ETC
control module (N15/3). Based on this information the ETC control module (N15/3) actuates the solenoid
valves so that the upshifts and downshifts take place at higher engine speed.
Shift-Lock Function
Operation
The term shift lock combines the functions which, in addition to the parking brake, offer an additional safeguard
for the vehicle to prevent it moving off unintentionally.
These include the functions of locking the selector lever position "P" and locking the ignition lock as well as the
parking lock in the transmission.
The shift lock function only allows shifting out of selector lever position "P" if the transmitter key (A8/1) has
been turned into the position "Ignition: ON" and the brake pedal is depressed.
In order to ensure that after parking the vehicle the selector lever is shifted into selector lever position "P", the
transmitter key (A8/1) can only be turned towards "0" in this position and removed from the EZS control
module (N73) (ignition lock locking, function).
The vehicle is secured mechanically by blocking the park pawl gear.
In the event of mechanical or electrical/electronic faults it is possible to unlock selector lever position "P"
manually (shift lock override function).
Function Of Locking Of Selector Lever Position "P"

See FUNCTION OF LOCKING OF SELECTOR LEVER POSITION "P"
.
Ignition Lock Locking, Function

See IGNITION LOCK INTERLOCK
.
Function Of Shift Lock Override

See FUNCTION OF SHIFT LOCK OVERRIDE
.
Function Of Locking Of Selector Lever Position "P" (With Touch Shift)
Operation

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:30 PMPage 288 © 2006 Mitchell Repair Information Company, LLC.

5 - Detach plug (3) from actuator motor.
6 - Support transmission and remove rear engine crossmember (5) with engine mount.
7 - Slightly lower engine transmission unit.
8 - Support transfer case (2) with lifting device. See SUPPORTING TRANSMISSION WITH
INSPECTION PIT LIFT.
9 - Unscrew bolts (4) and take out transfer case to the back.
10 - Install in the reverse order.
11 - Check filling capacity of transfer case.
Check transfer case (2) for leaks.
Torque Specifications; Driveshaft NOTE: Hang up propeller shaft to one side and ensure that the universal joint is
not damaged.
Self-locking bolt, propeller shaft to transfer case (to front axle). See
Torque Specifications; Driveshaft
.
NOTE:
Engine 112:
Bolt of rear engine crossmember to body.
Engine 112:
Bolt or nut, rear engine mount to transmission.
NOTE: Ensure that no lines are damaged.
NOTE: Transmission plate.
NOTE: Bolt, transfer case to automatic transmission.
Bolt, transfer case to manual transmission.
NOTE: Correct oil level: Bottom edge of filler hole.
Screw plug to transfer case.
DesignationModel 163
Self-locking bolt, front propeller shaft to transfer case (to rear axle)Nm40

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:30 PMPage 298 © 2006 Mitchell Repair Information Company, LLC.

Torque Specifications; Engine Mounts, Engine Supports
Torque Specifications; Engine Suspension, Engine Mounts, Engine Supports
Torque Specifications; Engine Suspension, Engine Mounts, Engine Supports
Torque Specifications; Transfer Case, Complete Unit
Fig. 167: Commercially Available Tools (See Workshop Equipment Manual)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Remove/Install Noise Encapsulation
Self-locking screw, propeller shaft to transfer case (to front axle)Nm50
DesignationEngine 112.942/970 113.942/965/ in model 163.154/157/
172/174/175
Bolt of rear engine crossmember to bodyNm40
Bolt or nut, rear engine mount to
transmissionM8Nm-
M10Nm40
DesignationEngine 612.963 in model
163.113Engine 628.963 in model
163
Bolt/nut, rear engine crossmember to
bodyNm4040
Bolt or nut, rear engine mount to
transmissionNm4040
DesignationEngine 111 in model 163
Bolt of rear engine crossmember to bodyNm40
Bolt or nut, rear engine mount to transmissionNm35
DesignationModel 163
Threaded plug in transfer caseNm30
Bolt, transfer case to automatic transmissionNm20
Bolt, transfer case to manual transmissionNm20

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:30 PMPage 299 © 2006 Mitchell Repair Information Company, LLC.

SURVEY OF SYSTEM COMPONENTS, AUTOMATIC TRANSMISSION (AT), LOCATION, TASK, DESIGN
Function Of Gear Change

See FUNCTION OF GEAR CHANGE
.
Shifting N to D (1st Gear), Function

See SHIFTING N TO D (1ST GEAR), FUNCTION
.
Shift From 1 to 2, Function

See SHIFT FROM 1 TO 2, FUNCTION
.
Limp-Home Mode, function

See LIMP
-HOME MODE, FUNCTION.
Operating Pressure, Function

See OPERATING PRESSURE, FUNCTION
.
Lubricating Pressure, Function

See LUBRICATING PRESSURE, FUNCTION
.
Shift Pressure, Function

See SHIFT PRESSURE, FUNCTION
.
Modulating Pressure, Function

See MODULATING PRESSURE, FUNCTION
.
Regulating Valve Pressure, Function

See REGULATING VALVE PRESSURE, FUNCTION
.
Shift Valve Pressure, Function

See SHIFT VALVE PRESSURE, FUNCTION
.
Manual Drive Mode Selection, Function

See MANUAL DRIVE MODE SELECTION, FUNCTION
.
Oil Level Control, Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:30 PMPage 303 © 2006 Mitchell Repair Information Company, LLC.