Chrysler Sebring 2004 Service Manual page 1498

JR
TRANSMISSION RANGE
SENSOR
DESCRIPTION
The Transmission Range Sensor (TRS) is mounted
to the top of the valve body inside the transaxle and
can only be serviced by removing the valve body. The
electrical connector extends through the transaxle
case (Fig. 319).
Fig. 319 Transmission Range Sensor (TRS)
1 - TRANSMISSION RANGE SENSOR
The Transmission Range Sensor (TRS) has four
switch contacts that monitor shift lever position and
send the information to the PCM/TCM.
The TRS also has an integrated temperature sen-
sor (thermistor) that communicates transaxle tem-
perature to the TCM and PCM (Fig. 320).
OPERATION
The Transmission Range Sensor (TRS) (Fig. 319)
communicates shift lever position (SLP) to the PCM/
TCM as a combination of open and closed switches.
Each shift lever position has an assigned combina-
tion of switch states (open/closed) that the PCM/TCM
receives from four sense circuits. The PCM/TCM
interprets this information and determines the
appropriate transaxle gear position and shift sched-
ule.
Location
41TE AUTOMATIC TRANSAXLE
Fig. 320 Transmission Temperature Sensor
1 - TRANSMISSION RANGE SENSOR
2 - TEMPERATURE SENSOR
Since there are four switches, there are 16 possible
combinations of open and closed switches (codes).
Seven of these codes are related to gear position and
three are recognized as "between gear" codes. This
results in six codes which should never occur. These
are called "invalid" codes. An invalid code will result
in a DTC, and the PCM/TCM will then determine the
shift lever position based on pressure switch data.
This allows reasonably normal transmission opera-
tion with a TRS failure.
TRS SWITCH STATES
SLP T42
P CL
R CL
N CL
OD OP
3 OP
L CL
21 - 237
T41 T3
CL CL OP
OP OP OP
CL OP CL
OP OP CL
OP CL OP
OP CL CL
T1