Removal - Dodge Intrepid Service Manual

LH
TRANSMISSION RANGE SENSOR (Continued)
Fig. 403 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 will then determine the shift
lever position based on pressure switch data. This
allows reasonably normal transmission operation
with a TRS failure.
TRS SWITCH STATES
SLP T42
P CL
R CL
N CL
OD OP
3 (AS) OP
L CL
T41 T3
CL CL OP
OP OP OP
CL OP CL
OP OP CL
OP CL OP
OP CL CL
TRANSMISSION TEMPERATURE SENSOR
The TRS has an integrated thermistor (Fig. 403)
that the PCM uses to monitor the transmission's
sump temperature. Since fluid temperature can
affect transmission shift quality and convertor lock
up, the PCM requires this information to determine
which shift schedule to operate in. The PCM also
monitors this temperature data so it can energize the
vehicle cooling fan(s) when a transmission "overheat"
condition exists. If the thermistor circuit fails, the
PCM will revert to calculated oil temperature usage.
CALCULATED TEMPERATURE
A failure in the temperature sensor or circuit will
result in calculated temperature being substituted for
actual temperature. Calculated temperature is a pre-
dicted fluid temperature which is calculated from a
combination of inputs:
• Battery (ambient) temperature
• Engine coolant temperature
• In-gear run time since start-up

REMOVAL

(1) Disconnect the TRS connector.
(2) Remove valve body assembly from vehicle.
Refer to Valve Body removal and Installation in this
group.
(3) Remove the manual shaft seal (Fig. 404) .
T1
Fig. 404 Manual Shaft Seal—Typical
1 - SEAL
2 - MANUAL SHAFT
TRANSAXLE 21 - 153