Input Speed Sensors: Operation

Fig 1: Locating Input Speed Sensors

Courtesy of DAIMLERCHRYSLER CORP.

1 - DRIVING CLUTCH K1

2 - TRANSMISSION HOUSING

3 - DRIVING CLUTCH K1 INTERNALLY TOOTHED DISC

4 - EXCITER RING

5 - VALVE HOUSING OF SHIFT PLATE

6 - N2 INPUT SPEED SENSOR

7 - SPRING

8 - N3 INPUT SPEED SENSOR

9 - EXCITER RING

10 - DRIVING CLUTCH K1 EXTERNALLY TOOTHED DISC

Signals from the input speed sensors (6, 8) are recorded in the transmission control module (TCM) together with the wheel and engine speeds and other information and are processed into an input signal for electronic control. See Fig 1.

Input speed sensor N2 (6) records the speed of the front sun gear via the externally toothed disc carrier of the multiple-disc clutch K1 (10) and input speed sensor N3 (8) records the speed of the front planet carrier via the internally toothed disc carrier of multiple-disc clutch K1 (3).