(10) If torque conveter was replaced, it is neces-
sary to reset the TCC Break-In Strategy. (Refer to 8 -
ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES/TRANSMISSION CONTROL MODULE -
STANDARD PROCEDURE)
TRANSMISSION CONTROL
RELAY
DESCRIPTION
The transmission control relay (Fig. 308) is located
in the Power Distribution Center (PDC), which is
located on the left side of the engine compartment.
OPERATION
The relay is supplied fused B+ voltage, energized
by the TCM, and is used to supply power to the sole-
noid pack when the transmission is in normal oper-
ating mode. When the relay is “off”, no power is
supplied to the solenoid pack and the transmission is
in “limp-in” mode. After a controller reset (ignition
key turned to the “run” position or after cranking
engine), the TCM energizes the relay. Prior to this,
the TCM verifies that the contacts are open by check-
ing for no voltage at the switched battery terminals.
After this is verified, the voltage at the solenoid pack
pressure switches is checked. After the relay is ener-
gized, the TCM monitors the terminals to verify that
the voltage is greater than 3 volts.
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. 309).
The Transmission Range Sensor (TRS) has four
switch contacts that monitor shift lever position and
send the information to the TCM.
The TRS also has an integrated temperature sen-
sor (thermistor) that communicates transaxle tem-
perature to the TCM and PCM (Fig. 310).
OPERATION
The Transmission Range Sensor (TRS) (Fig.
309)communicates shift lever position (SLP) to the
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 TCM
receives from four sense circuits. The TCM interprets
this information and determines the appropriate
transaxle gear position and shift schedule.
Fig. 308 Transmission Control Relay Location
1 - POWER DISTRIBUTION CENTER (PDC)
2 - BATTERY
3 - AIR CLEANER/THROTTLE BODY ASSY.
4 - LEFT FENDER
5 - TRANSMISSION CONTROL RELAY
Fig. 309 Transmission Range Sensor (TRS)
Location
1 - TRANSMISSION RANGE SENSOR
21s - 190 41TE AUTOMATIC TRANSAXLE PL
TORQUE CONVERTER (Continued)
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