Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 602
SPEED SENSOR - INPUT
DESCRIPTION
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.
OPERATION
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.
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-
lowing:
• Torque converter clutch slippage
• Torque converter element speed ratio
Fig. 304 Input Speed Sensor Location
1 - INPUT SPEED SENSOR
Fig. 305 O-Ring Location
1 - INPUT SPEED SENSOR
2 - O-RING
Fig. 306 Sensor Relation to Input Clutch Hub
1 - INPUT SPEED SENSOR
2 - TRANSAXLE CASE
3 - INPUT CLUTCH HUB
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REMOVAL
(1) Disconnect battery negative cable.
(2) Disconnect input speed sensor connector (Fig.
307).
(3) Unscrew and remove input speed sensor (Fig.
308).
(4) Inspect speed sensor o-ring (Fig. 309) and
replace if necessary.
INSTALLATION
(1) Verify o-ring is installed into position (Fig.
309).
(2) Install and tighten input speed sensor to 27
N·m (20 ft. lbs.) (Fig. 308).
(3) Connect speed sensor connector (Fig. 307).
(4) Connect battery negative cable.
Fig. 307 Transmission Connectors
1 - SOLENOID PACK CONNECTOR
2 - INPUT SPEED SENSOR CONNECTOR
3 - OUTPUT SPEED SENSOR CONNECTOR
4 - TRANSMISSION RANGE SENSOR CONNECTOR
Fig. 308 Input (Turbine) Speed Sensor
1 - INPUT SPEED SENSOR
Fig. 309 O-ring Location
1 - INPUT SPEED SENSOR
2 - O-RING
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SPEED SENSOR - INPUT (Continued)
SPEED SENSOR - OUTPUT
DESCRIPTION
The Output Speed Sensor is a two-wire magnetic
pickup device that generates an AC signal as rotation
occurs. It is threaded into the transaxle case (Fig.
310), sealed with an o-ring (Fig. 311), and is consid-
ered a primary input to the Powetrain/Transmission
Control Module.
OPERATION
The Output Speed Sensor provides information on
how fast the output shaft is rotating. As the rear
planetary carrier park pawl lugs pass by the sensor
coil (Fig. 312), an AC voltage is generated and sent to
the PCM/TCM. The PCM/TCM interprets this infor-
mation as output shaft rpm.
The PCM/TCM compares the input and output
speed signals to determine the following:
• Transmission gear ratio
• Speed ratio error detection
• CVI calculation
VEHICLE SPEED SIGNAL
The vehicle speed signal is taken from the Output
Speed Sensor. The PCM converts this signal into a
pulse per mile signal and sends the vehicle speed
message across the communication bus to the BCM.
The BCM sends this signal to the Instrument Cluster
to display vehicle speed to the driver. The vehicle
speed signal pulse is roughly 8000 pulses per mile.
REMOVAL
(1) Disconnect battery negative cable.
(2) Raise vehicle on hoist.
(3) Disconnect output speed sensor connector (Fig.
313).
(4) Unscrew and remove output speed sensor (Fig.
314).
(5) Inspect speed sensor o-ring (Fig. 315) and
replace if necessary.
Fig. 310 Output Speed Sensor
1 - OUTPUT SPEED SENSOR
Fig. 311 O-Ring Location
1 - OUTPUT SPEED SENSOR
2 - O-RING
Fig. 312 Sensor Relation to Planet Carrier Park Pawl
1 - OUTPUT SPEED SENSOR
2 - REAR PLANET CARRIER/OUTPUT SHAFT ASSEMBLY
3 - TRANSAXLE CASE
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INSTALLATION
(1) Verify o-ring is installed into position (Fig.
315).
(2) Install and tighten input speed sensor to 27
N·m (20 ft. lbs.).
(3) Connect speed sensor connector (Fig. 313).
(4) Connect battery negative cable.
Fig. 313 Transmission Connectors
1 - SOLENOID PACK CONNECTOR
2 - INPUT SPEED SENSOR CONNECTOR
3 - OUTPUT SPEED SENSOR CONNECTOR
4 - TRANSMISSION RANGE SENSOR CONNECTOR
Fig. 314 Output Speed Sensor
1 - OUTPUT SPEED SENSOR
Fig. 315 O-ring Location
1 - OUTPUT SPEED SENSOR
2 - O-RING
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SPEED SENSOR - OUTPUT (Continued)
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