1997 MERCEDES-BENZ ML320 automatic transmission

Fig. 152: R/P Lock, Function (Locking Position)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Function Of R Lock
Above a speed of approximately 10km/h the R/P locking solenoid (89) is actuated by the electronic selector
lever module control module (N15/5). See Fig. 152
. The R/P lock lever (90) is turned to the lock position (shift
from "N" to "R"). The tab on the lock lever (R lock) (90c) locks (R-lock (69c) the locking disc (69). The
selector lever (80) cannot be shifted into selector lever position "R".

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 270 © 2006 Mitchell Repair Information Company, LLC.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 271 © 2006 Mitchell Repair Information Company, LLC.

Fig. 153: P-Lock, Function (Locking Position)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Function Of P Lock
The selector lever position "P" is locked whenever R/P locking solenoid (89) is not actuated by the electronic
selector lever module control module (N15/5). See Fig. 153
. The prerequisites for this are as follows:
No voltage supply to the electronic selector lever module control module (N15/5).
Brake pedal not depressed.
Under these conditions the locking lever (90) is in the locking position (P-lock).
The web on the locking lever (P-lock) (90b) locks the locking disc (69). It is not possible to shift the selector
lever (80) out of selector lever position "P".
Position Display, Location/Task
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 272 © 2006 Mitchell Repair Information Company, LLC.

Fig. 154: Position Display, Location/Task
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Position Display, Location

The position display (selector scheme symbols (87)) is accommodated in the floor shift cover. See Fig.
154. In addition a gear display is located in the instrument cluster (A1).
Position Display, Task


2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 273 © 2006 Mitchell Repair Information Company, LLC.

Via the selector scheme symbols (87) the alternative selector lever positions and their sequence are shown
symbolically.
ETC Control Unit, Location/Task
Fig. 155: ETC Control Unit, Location/Task
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
ETC Control Unit, Location

See ETC Control Unit, Location
.
ETC Control Unit, Task

See ETC Control Unit, Task
or ETC Control Unit, Task .
ETC Control Unit, Location

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 274 © 2006 Mitchell Repair Information Company, LLC.

Fig. 156: ETC Control Module, Location
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Location
The ETC control module (N15/3) is installed in the left footwell, on the heater/air conditioning housing.
ETC Control Unit, Task
Transmission 722.6 in model 163 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 275 © 2006 Mitchell Repair Information Company, LLC.

Fig. 157: ETC Control Module, Task With Touch Shift
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 276 © 2006 Mitchell Repair Information Company, LLC.

Task
The ETC control module (N15/3) determines the instantaneous operating condition of the vehicle and controls
all gearshift sequences taking into account the ease of shifting and the driving situation. This involves receiving,
converting and transmitting various digital and analog signals. See Fig. 157
.
It receives operating data in the form of input signals from:
Starter Lock-Out Contact (Y3/6S1)
RPM Sensor 2 (Y3/6N2)
RPM Sensor 3 (Y3/6N3)
Transmission Oil Temperature Sensor (Y3/6B1)
In addition there is a connection via the engine compartment bus to the:
Instrument Cluster (A1)
ME-SFI Control Module (N3/10) or CDI Control Module (N3/9)
The solenoid valves for the modulating and shift pressure and for the gear changes are actuated by the ETC
control module (N15/3).
The pressure required is calculated from all input signals, adjusted to the torque to be transferred. The following
information from other systems is then processed:
ME-SFI Control Module (N3/10) or CDI Control Module (N3/9):
Engine Torque
Engine Speed
Accelerator Pedal Position
Gear Shift
Engine Status
Electronic selector lever module control module (N15/5):
Kickdown Switch (S16/6)
Selector Lever Position P/N
Traction system control module (N47):
Transmission Ratio
Speeds
Instrument cluster (A1):

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 277 © 2006 Mitchell Repair Information Company, LLC.