Mercedes-Benz ML320. Manual — part 151

Fig. 32: Wheel Speed Sensor, Location/Task/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me

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

me

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

Fig. 34: Electronic Control Module, Location/Task/Design/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me