Speed Sensor - Input; Description; Operation - Chrysler Sebring 2005 Service Manual

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SPEED SENSOR - INPUT

The Input Speed Sensor is a two-wire magnetic

pickup device that generates AC signals as rotation

occurs. It is threaded into the transaxle case (Fig.

304), sealed with an o-ring (Fig. 305), and is consid-

ered a primary input to the Powertrain/Transmission

Control Module.

Fig. 304 Input Speed Sensor Location

1 - INPUT SPEED SENSOR

Fig. 305 O-Ring Location

1 - INPUT SPEED SENSOR

40TE AUTOMATIC TRANSAXLE

The Input Speed Sensor provides information on

how fast the input shaft is rotating. As the teeth of

the input clutch hub pass by the sensor coil (Fig.

306), an AC voltage is generated and sent to the

PCM/TCM. The PCM/TCM interprets this informa-

tion as input shaft rpm.

Fig. 306 Sensor Relation to Input Clutch Hub

1 - INPUT SPEED SENSOR

2 - TRANSAXLE CASE

3 - INPUT CLUTCH HUB

The PCM/TCM compares the input speed signal

with output speed signal to determine the following:

• Transmission gear ratio

• Speed ratio error detection

• CVI calculation

The PCM/TCM also compares the input speed sig-

nal and the engine speed signal to determine the fol-

• Torque converter clutch slippage

• Torque converter element speed ratio

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Sebring convertible 2005 Stratus 2005