Sensor MERCEDES-BENZ ML500 1997 Complete Manual Online

Fig. 26: Position Sensor, Location/Task/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Shift Pattern Display, Location

The position indicator (72) is located in the floor shift. See Fig. 26
.
Shift Pattern Display, Task


2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Backup Lamp Switch, Task

To switch on the backup lamp.
Backup Lamp Switch, Function

When reverse gear is engaged the reversing lamp is actuated direct via the reverse lamp switch
(S16/10s1).
SURVEY OF SYSTEM COMPONENTS, AUTOMATIC TRANSMISSION, LOCATION/TASK/DESIGN/FUNCTION (WITH
TOUCH SHIFT)
Starter Lock-Out Contact, Location/Task/Design/Function

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

See TORQUE CONVERTER, LOCATION/TASK/DESIGN/FUNCTION
.
Wheel Speed Sensor, Location/Task/Function

See WHEEL SPEED SENSOR, LOCATION/TASK/FUNCTION
.
Electronic Control Module, Location/Task/Design/Function

See ELECTRONIC CONTROL MODULE, LOCATION/TASK/DESIGN/FUNCTION
.
Location/Task/Design/Function Of Freewheel

See LOCATION/TASK/DESIGN/FUNCTION OF FREEWHEEL
.
Transmission Housing Breathing, Location/Task

See TRANSMISSION HOUSING BREATHING, LOCATION/TASK
.
Kick-Down Switch, Location/Task/Design

See KICK
-DOWN SWITCH, LOCATION/TASK/DESIGN.
Location/Task/Function Of Command Valve

See LOCATION/TASK/FUNCTION OF COMMAND VALVE
.
Multiple-Disc Brake, Location/Task/Design/Function NOTE: Transmission With Touch Shift 722.6 In Model 163

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:26 PMPage 55 © 2006 Mitchell Repair Information Company, LLC.

See SHIFT PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION.
ETC Control Module, Location/Task

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

See ELECTRONIC SELECTOR LEVER MODULE CONTROL MODULE,
LOCATION/TASK/DESIGN.
Temperature Sensor, Location/Task/Design/Function

See TEMPERATURE SENSOR, LOCATION/TASK/DESIGN/FUNCTION
.
Torque Converter Lock-Up Clutch, Location/Task/Design/Function

See TORQUE CONVERTER LOCK
-UP CLUTCH, LOCATION/TASK/DESIGN/FUNCTION.
Automatic Transmission, Contents Function Description

See AUTOMATIC TRANSMISSION, CONTENTS, FUNCTION DESCRIPTION
.
Starter Lock-Out Contact, 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 3:15:26 PMPage 58 © 2006 Mitchell Repair Information Company, LLC.

Fig. 31: Torque Converter, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Wheel Speed Sensor, Location/Task/Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:26 PMPage 65 © 2006 Mitchell Repair Information Company, LLC.

Fig. 32: Wheel Speed Sensor , Location/Task/Function
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 3:15:26 PMPage 66 © 2006 Mitchell Repair Information Company, LLC.

Wheel Speed Sensor, Location

RPM sensors 2 and 3 (Y3/6n2 and Y3/6n3) are permanently connected with the supporting body of the
electrical control unit (Y3/6) via contact tongues. See Fig. 32
.
Wheel Speed Sensor,

The signals from the RPM sensors 2 3 (Y3/6n2, Y3/6n3) are recorded in the ETC control module (N15/3)
together with the wheel and engine speeds and other information, and are the input signals for the
electronic control system.
Wheel Speed Sensor, Function

See SPEED SENSOR, FUNCTION
.
Speed Sensor, Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:26 PMPage 67 © 2006 Mitchell Repair Information Company, LLC.

Fig. 33: Speed Sensor, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
The RPM sensors are pressed against the transmission housing (51) by a spring (49) which is held against the
valve housing of the shift plate (2a). See Fig. 33
. This ensures a defined distance between the RPM sensors and
the exciter ring (50). RPM sensor 2 (Y3/6yn2) records the speed of the front sun gear via the outer multiple-disc
carrier of the front multiple-disc clutch (K1b) and RPM sensor 3 (Y3/6yn3) records the speed of the front
planetary gear carrier via the inner multiple-disc carrier of the front multiple-disc clutch (K1c).
Electronic Control Module, Location/Task/Design/Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:26 PMPage 68 © 2006 Mitchell Repair Information Company, LLC.

Fig. 35: Electronic Control Module, Design
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Structure
The electrical control unit (Y3/6) consists of a supporting body made from plastic, in which the electrical
components, RPM sensors 2 and 3 (Y3/6n2, Y3/6n3), the regulating solenoid valves (Y3/6y1, Y3/6y2), the shift
solenoid valves (Y3/6y6), the starter lockout contact (Y3/6s1) and transmission oil temperature sensor (Y3/6b1)
are combined. See Fig. 35
. Conductor tracks integrated into the shell connect the electric components to a plug
connection (11).

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:26 PMPage 71 © 2006 Mitchell Repair Information Company, LLC.

Fig. 36: Electronic Control Module, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
Signals from the ETC control module (N15/3) are conve rted into hydraulic functions in the electric valve
control unit (Y3/6). The RPM sensors (Y3/6n2, Y3/6n3) , the starter lockout contact (Y3/6s1) and the
transmission oil temperature sensor (Y3/6b1) of the electrical cont rol unit (Y3/6) supply the ETC control
module (N15/3) with input signals. The solenoid valves are controlled by the ETC control module (N15/3) and
trigger the hydraulic functions. See Fig. 36
.
Location/Task/Design/Function Of Freewheel
Fig. 37: Function Of Freewheel
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Freewheel Location

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:26 PMPage 74 © 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. 96
.
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):
Selector Lever Position/Shift Range

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 164 © 2006 Mitchell Repair Information Company, LLC.