MERCEDES-BENZ ML350 1997 Complete Repair Manual

Fig. 62: Torque Converter Lockup PWM Solenoid Valve
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 3:15:27 PMPage 112 © 2006 Mitchell Repair Information Company, LLC.

Torque Converter Lockup PWM Solenoid Valve, Location

In the supporting body of the electrical control unit (Y3/6) and pressed against the valve housing of the
shift plate (2a) by means of a leaf spring (2c). See Fig. 62
.
Torque Converter Lockup PWM Solenoid Valve, Task

The PWM solenoid valve for the torque converter lockup (Y3/6y6) controls the pressure for the torque
converter lockup clutch.
Torque Converter Lockup PWM Solenoid Valve, Design

See TORQUE CONVERTER LOCKUP PWM SOLENOID VALVE, DESIGN
.
Torque Converter Lockup PWM Solenoid Valve, Function

it converts a pulse-width-modulated current actuated by the ETC control module (N15/3) into the
corresponding hydraulic pressure KUB (p-S/KUB).
Torque Converter Lockup PWM Solenoid Valve, Design

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 113 © 2006 Mitchell Repair Information Company, LLC.

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 114 © 2006 Mitchell Repair Information Company, LLC.

Fig. 63: Torque Converter Lockup Clutch PWM Solenoid Valve, Design
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. 63
. 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.
Modulating Pressure Regulating Solenoid Valve, Location/Task/Design/Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 115 © 2006 Mitchell Repair Information Company, LLC.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 116 © 2006 Mitchell Repair Information Company, LLC.

Fig. 64: Modulating Pressure Regulating Solenoid Valve, Location/Task/Design/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Modulating Pressure Regulating Solenoid Valve, Location

In the supporting body of the electrical control unit (Y3/6) and pressed against the valve housing of the
shift plate (2a) by means of a leaf spring. See Fig. 64
.
Modulating Pressure Regulating Solenoid Valve, Task

To control the modulating pressure depending on the constantly changing operating conditions such as
load/gear changes.
Modulating Pressure Regulating Solenoid Valve, Design

See MODULATING PRESSURE REGULATING SOLENOID VALVE, DESIGN
.
Modulating Pressure Regulating Solenoid Valve, Function

The modulating pressure regulating solenoid valve (Y3/6y1) assigns a proportional pressure to the current
which is controlled by the ETC control module (N15/3) according to the load.
Modulating Pressure Regulating Solenoid Valve, Design

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 117 © 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 3:15:27 PMPage 118 © 2006 Mitchell Repair Information Company, LLC.

Fig. 65: Modulating Pressure Regulating Solenoid Valve
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Structure - The modulating pressure regulating solenoid valve (Y3/6y1) had an interference fit and is sealed of
to the valve body of the shift plate (2a) by a seal (arrow). See Fig. 65
. The contact springs (32) on the
modulating pressure regulating solenoid valve (Y3/6y1) engage in a slot in the conductor tracks (33). The force
of the contact spring (32) ensures safe contacts.
Shift Pressure Regulating Solenoid Valve, Location/Task/Design/Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 119 © 2006 Mitchell Repair Information Company, LLC.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 120 © 2006 Mitchell Repair Information Company, LLC.

Fig. 66: Shift Pressure Regulating Solenoid Valve, Location/Task/Design/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Shift Pressure Regulating Solenoid Valve, Location

In the supporting body of the electrical control unit (Y3/6) and pressed against the valve housing of the
shift plate (2a) by means of a leaf spring. See Fig. 66
.
Shift Pressure Regulating Solenoid Valve, Task

To control the shift pressure depending on the constantly changing operating conditions, such as
load/gear changes.
Shift Pressure Regulating Solenoid Valve, Design

See SHIFT PRESSURE REGULATING SOLENOID VALVE, DESIGN
.
Shift Pressure Regulating Solenoid Valve, Function

The shift pressure regulating solenoid valve (Y3/6y2) assigns a proportional pressure to the current which
is controlled by the ETC control module (N15/3) according to the load.
Shift Pressure Regulating Valve, Location/Task/Function

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:27 PMPage 121 © 2006 Mitchell Repair Information Company, LLC.