sensor MERCEDES-BENZ ML320 1997 Complete Owners Manual

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Task - The ETC control module (N15/3) determines the instantaneous operating condition for the vehicle and
controls all gearshift sequences taking into account the ease of shifting and the driving situation. See Fig. 97
.
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)
(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

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

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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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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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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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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

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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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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

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See KICKDOWN SWITCH, LOCATION/TASK/DESIGN/FUNCTION MODEL 163 WITHOUT
TOUCH SHIFT.
Starter Lock-Out Contact, Location/Task/Design/Function

See STARTER LOCK
-OUT CONTACT, LOCATION/TASK/DESIGN/FUNCTION.
Temperature Sensor, Location/Task/Design/Function

See TEMPERATURE SENSOR, LOCATION/TASK/DESIGN/FUNCTION
.
Wheel Speed Sensor, Location/Task/Function

See WHEEL SPEED SENSOR, LOCATION/TASK/FUNCTION
.
Location/Task/Design/Function Of Oil Pump

See LOCATION/TASK/DESIGN/FUNCTION OF OIL PUMP
.
Kickdown Switch, Location/Task/Design/Function Model 163 Without Touch Shift

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Via the selector scheme symbols (87) the alternative selector lever positions and their sequence are shown
symbolically.
Speed Sensor, Function

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