MERCEDES-BENZ ML430 1997 Complete Repair Manual

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
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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
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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
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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
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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
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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
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Saturday, October 02, 2010 3:15:29 PMPage 277 © 2006 Mitchell Repair Information Company, LLC.

Selector Lever Position/Shift Range
ETC Control Unit, Task
Transmission 722.6 in Model 163 Without Touch Shift

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Fig. 158: ETC Control Module without Touch Shift
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Task

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 279 © 2006 Mitchell Repair Information Company, LLC.

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. See Fig. 158
. This
involves receiving , converting and transmitting various digital and analog signals.
Input Signals:
Starter Lock-Out Contact (Y3/6S1)
RPM Sensor 2 (Y3/6N2)
RPM Sensor 3 (Y3/6N3)
Transmission Oil Temperature Sensor (Y3/6B1)
Kickdown Switch (S16/6)
Gear Recognition Switch (S16/10)
Output signals:
Reverse/Parking Lock Valve
Input And Output Signals:
Datalink Connector (X11/4)
In addition there is a connection via the engine compartment bus to the:
ME-SFI Control Module (N3/10) or CDI Control Module (N3/9)
Traction System Control Module (N47)
Transfer Case Control Module (N78)
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)
Reverse And Parking Lock Solenoids (Y66/1)
Selector Lever Position (P/N) to the Engine Control Module (ME-SFI) (N3/10) (only on detection of the
selector lever position "P" or "N" on the transmission range recognition switch (S16/10) and at the starter
interlock contact (Y3/6s1)).
Traction System Control Module (N47):
Wheel Speeds
Gear Shift
Traction Status

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Transfer Case Control Module (N78):
Position of Transfer Case (off-road or on-road ratio)
Engine Torque
Engine Speed
Accelerator Pedal Position
Gear Soft
Engine Status
The following information is output to other systems:
ME-SFI Control Module (N3/10) or CDI Control Module (N3/9):
Kickdown Switch (S16/6)
Engage Drive Mode
Traction System Control Module (N47):
Transmission Ratio
Speeds
Oil Level Control, Function
Operation - The oil level control system seals the opening between the oil gallery and gearset chamber so that
the rotating gearsets do not splash about in oil as the oil level rises. The oil level control reduces power loss and
prevents oil from being thrown out of the transmission housing at high oil temperatures.
Float, Location/Function

See SHIFT PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION
.
Transmission Housing Breathing, Location/Task

See TRANSMISSION HOUSING BREATHING, LOCATION/TASK
.
Function Of Torque Converter Lockup Clutch Control
Operation

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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