sensor DODGE RAM SRT-10 2006 Service Repair Manual

3. Install the TRS (3) into the mounting bracket (2)
with the wiring connector facing the front of the
transmission.
4. Install the two screws to hold the TRS to the
mounting bracket. Tighten the screws to 5 Nꞏm (45
in.lbs.).
5. Verify proper sensor operation (1-4).
6. Move the transmission manual shaft lever to the
PARK position.
7. Connect TRS wiring connector to the TRS and
lower vehicle.
8. Refill the transmission fluid to the correct level.
1 - NEUTRAL CONTACT
2 - MANUAL LEVER AND SENSOR PLUNGER IN REVERSE
POSITION
3 - PARK CONTACT
4 - TRANSMISSION RANGE SENSOR

SENSOR-TRANSMISSION TEMPERATURE
DESCRIPTION
Transmission fluid temperature readings are supplied
to the transmission control module by the thermistor.
The temperature readings are used to control engage-
ment of the fourth gear overdrive clutch, the converter
clutch, and governor pressure. Normal resistance
value for the thermistor at room temperature is
approximately 2000 ohms.
The thermistor is part of the governor pressure sensor
assembly (2) and is immersed in transmission fluid at
all times.
OPERATION
The PCM prevents engagement of the converter clutch and overdrive clutch,when fluid temperature is below
approximately 10°C (50°F).
If fluid temperature exceeds 126°C (260°F), the PCM causes a 4-3 downshiftand engage the converter clutch.
Engagement is according to the third gear converter clutch engagement schedule.
The Tow/Haul lamp in the instrument panel illuminates when the shift back to third occurs. The transmission will not
allow fourth gear operation until fluid temperature decreases to approximately 110°C (230°F).

Manual lever detent ball.
Throttle lever.
Fluid filter.
Pressure adjusting screw bracket.
Governor pressure solenoid.
Governor pressure sensor (includes transmission temperature thermistor).
Converter clutch/overdrive solenoid assembly and harness.
Governor housing gasket.
Solenoid case connector O-rings.
1. Shift transmission into NEUTRAL.
2. Raise vehicle.
3. Remove gearshift and throttle levers from shaft of
valve body manual lever.
4. Disconnect wires at solenoid case connector (1).
5. Remove the transmission range sensor (2) (Refer
to 21 - TRANSMISSION/AUTOMATIC/TRANSMIS-
SION RANGE SENSOR - REMOVAL).
6. Position drain pan under transmission oil pan.
7. Remove transmission oil pan and gasket.
8. Remove fluid filter from valve body.
9. Remove bolts attaching valve body to transmission
case.
10. Lower valve body enough to remove accumulator
piston and springs.
11. Work manual lever shaft and electrical connector
out of transmission case.
12. Lower valve body (1), rotate valve body away
from case, pull park rod (3) out of sprag, and
remove valve body.
DISASSEMBLY
CAUTION: Do not clamp any valve body component in a vise. This practice can damage the component
resulting in unsatisfactory operation after assembly and installation.Do not use pliers to remove any of the
valves, plugs or springs and do not force any of the components out or into place. The valves and valve
body housings will be damaged if force is used. Tag or mark the valve body springs for reference as they
are removed. Do not allow them to become intermixed.

1. Disconnect wires from governor pressure sensor
and solenoid.
2. Remove screws attaching governor body and
retainer plate to transfer plate.
3. Remove retainer plate, governor body and gasket
from transfer plate.
4. Remove governor pressure sensor from governor
body.
5. Remove governor pressure solenoid by pulling it
straight out of bore in governor body. Remove and
discard solenoid O-rings if worn, cut, or torn.
6. Remove small shoulder bolt that secures solenoid
harness case connector (1) to 3-4 accumulator
housing (2). Retain shoulder bolt. Either tape it to
harness or thread it back into accumulator housing
after connector removal.
7. Unhook overdrive/converter solenoid harness (1)
from 3-4 accumulator cover plate (2)
.
8. Turn valve body over and remove screws that
attach overdrive/converter solenoid assembly (1) to
valve body.

4. Remove timing valve cover.
5. Remove 3-4 timing valve and spring.
6. Remove 3-4 quick fill valve, spring and plug.
7. Remove 3-4 shift valve and spring.
8. Remove converter clutch valve, spring and plug.
9. Remove converter clutch timing valve, retainer and
valve spring.
CLEANING
Clean the valve housings, valves, plugs, springs, and separator plates with a standard parts cleaning solution only.
Do not use gasoline, kerosene, or any type of caustic solution.
Do not immerse any of the electrical components in cleaning solution. Clean the governor solenoid and sensor and
the dual solenoid and harness assembly by wiping them off with dry shop towels only.
Dry all except the electrical parts with compressed air. Make sure all passages are clean and free from obstructions.
Do not use rags or shop towels to dry or wipe off valve body components. Lint from these materials can
stick to valve body parts, interfere with valve operation, and clog filters and fluid passages.
Wipe the governor pressure sensor and solenoid valve with dry, lint free shop towels only. The O-rings on the sen-
sor and solenoid valve are the only serviceable components. Be sure the vent ports in the solenoid valve are open
and not blocked by dirt or debris. Replace the valve and/or sensor only whenDRB scan tool diagnosis indicates this
is necessary. Or, if either part has sustained physical damage (dented, deformed, broken, etc.).
CAUTION: Do not turn the small screw at the end of the solenoid valve for any reason. Turning the screw
in either direction will ruin solenoid calibration and result in solenoidfailure. In addition, the filter on the
solenoid valve is NOT serviceable. Do not try to remove the filter as this will damage the valve housing.
INSPECTION
Inspect the throttle and manual valve levers and shafts. Do not attempt to straighten a bent shaft or correct a loose
lever. Replace these components if worn, bent, loose or damaged in any way.
Inspect all of the valve body mating surfaces for scratches, nicks, burrs,or distortion. Use a straightedge to check
surface flatness. Minor scratches may be removed with crocus cloth using only very light pressure.
Minor distortion of a valve body mating surface may be corrected by smoothing the surface with a sheet of crocus
cloth. Position the crocus cloth on a surface plate, sheet of plate glass orequally flat surface. If distortion is severe
or any surfaces are heavily scored, the valve body will have to be replaced.
CAUTION: Many of the valves and plugs, such as the throttle valve, shuttle valve plug, 1-2 shift valve and
1-2 governor plug, are made of coated aluminum. Aluminum components are identified by the dark color of
thespecialcoatingappliedtothesurface(orbytestingwithamagnet).Donot sand aluminum valves or
plugs under any circumstances. This practice could damage the special coating causing the valves/plugs to
stick and bind.
Inspect the valves and plugs for scratches, burrs, nicks, or scores. Minorsurface scratches on steel valves and
plugs can be removed with crocus cloth butdo not round off the edges of the valve or plug lands.Maintaining

sharpness of these edges is vitally important. The edges prevent foreign matter from lodging between the valves
and plugs and the bore.
Inspect all the valve and plug bores in the valve body. Use a penlight to viewthe bore interiors. Replace the valve
body if any bores are distorted or scored. Inspect all of the valve body springs. The springs must be free of dis-
tortion, warpage or broken coils.
Check the two separator plates for distortion or damage of any kind. Inspect the upper housing, lower housing, 3-4
accumulator housing, and transfer plate carefully. Be sure all fluid passages are clean and clear. Check condition of
the upper housing and transfer plate check balls as well. The check balls and ball seats must not be worn or dam-
aged.
Trial fit each valve and plug in its bore to check freedom of operation. Whenclean and dry, the valves and plugs
shoulddropfreelyintothebores.
Valve body bores do not change dimensionally with use. If the valve body functioned correctly when new, it will
continue to operate properly after cleaning and inspection. It should notbe necessary to replace a valve body
assembly unless it is damaged in handling.
The only serviceable valve body components are listed below. The remaining valve body components are serviced
only as part of a complete valve body assembly. Serviceable parts are:
dual solenoid and harness assembly
solenoid gasket
solenoid case connector O-rings and shoulder bolt
switch valve and spring
pressure adjusting screw and bracket assembly
throttle lever
manual lever and shaft seal
throttle lever shaft seal, washer, and E-clip
fluid filter and screws
detent ball and spring
valve body screws
governor pressure solenoid
governor pressure sensor and retaining clip
park lock rod and E-clip
ASSEMBLY
CAUTION: Do not force valves or plugs into place during reassembly. If the valve body bores, valves and
plugs are free of distortion or burrs, the valve body components should allslide into place easily. In addi-
tion, do not overtighten the transfer plate and valve body screws during reassembly. Overtightening can
distort the housings resulting in valve sticking, cross leakage and unsatisfactory operation. Tighten valve
body screws to recommended torque only.

7. Lubricate solenoid case connector (1) O-rings and
shaft of manual lever with light coat of petroleum
jelly.
8. Attach solenoid case connector to 3-4 accumulator
with shoulder-type screw. Connector has small
locating tang that fits indimple at top of accumula-
tor housing (2). Seat tang in dimple before tighten-
ing connector screw.
9. Install solenoid assembly and gasket. Tighten sole-
noid attaching screws to 8 Nꞏm (72 in. lbs.) torque.
10. Verify that solenoid wire harness is properly
routed. Solenoid harness must be clear of manual
lever and park rod and not be pinched between
accumulator housing and cover.
11. Position line pressure adjusting screw in adjusting
screw bracket.
12. Install switch valve spring on tang at end of
adjusting screw bracket.
13. Position adjusting screw bracket on valve body.
Align valve springs and press bracket into place.
Install short, upper bracket screws first and long
bottom screw last. Verify that valve springs and
bracket are properly aligned. Then tighten all
three bracket screws to 4 Nꞏm (35 in. lbs.) torque.
14. Perform Line Pressure and Throttle Pressure
adjustments. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC/VALVE BODY - ADJUSTMENTS)
GOVERNOR BODY, SENSOR AND SOLENOID
1. Turn valve body assembly over so accumulator side of transfer plate is facing down.
2. Install new O-rings on governor pressure solenoid and sensor.
3. Lubricate solenoid and sensor O-rings with clean transmission fluid.
4. Install governor pressure sensor in governor body.
5. Install governor pressure solenoid in governor body. Push solenoid in until it snaps into place in body.
6. Position governor body gasket on transfer plate.
7. Install retainer plate on governor body and around solenoid. Be sure solenoid connector is positioned in retainer
cutout.
8. Align screw holes in governor body and transfer plate. Then install and tighten governor body screws to 4 Nꞏm
(35 in. lbs.) torque.
9. Connect harness wires to governor pressure solenoid and governor pressure sensor.
10. Install fluid filter and pan.
11. Lower vehicle.
12. Fill transmission with recommended fluid and road test vehicle to verify repair.

INSTALLATION
1. Check condition of O-ring seals (1) on valve body
harness connector (2). Replace seals on connector
body if cut or worn.
2. Check condition of manual lever shaft seal (2) in
transmission case. Replace seal if lip is cut or
worn. Install new seal with 15/16 deep well socket
(1).
3. Check condition of seals on accumulator piston. Install new piston seals, if necessary.
4. Place valve body manual lever in low (1 position) so ball on park lock rod will be easier to install in sprag.
5. Lubricate shaft of manual lever with petroleum jelly. This will ease inserting shaft through seal in case.
6. Lubricate seal rings on valve body harness connector with petroleum jelly.
7. Position valve body in case and work end of park lock rod into and through pawl sprag. Turn propeller shaft to
align sprag and park lock teeth if necessary. The rod will click as it enterspawl. Move rod to check engagement.
CAUTION: It is possible for the park rod to displace into a cavity just abovethe pawl sprag during instal-
lation. Make sure the rod is actually engaged in the pawl and has not displaced into this cavity.
8. Install accumulator spring and piston into case. Then swing valve body overpistonandouterspringtoholditin
place.
9. Align accumulator piston and outer spring, manual lever shaft and electrical connector in case.
10. Then seat valve body in case and install one or two bolts to hold valve bodyinplace.
11. Tighten valve body bolts alternately and evenly to 11 Nꞏm (100 in. lbs.)torque.
12. Install new fluid filter on valve body. Tighten filter screws to 4 Nꞏm (35 in. lbs.) torque.
13. Install throttle and gearshift levers on valve body manual lever shaft.
14. Check and adjust front and rear bands if necessary.
15. Install the transmission range sensor (Refer to 21 - TRANSMISSION/AUTOMATIC/TRANSMISSION RANGE
SENSOR - INSTALLATION).
16. Connect solenoid case connector wires.
17. Install oil pan and new gasket. Tighten pan bolts to 13.6 Nꞏm (125 in. lbs.) torque.
18. Lower vehicle and fill transmission with Mopar
ATF +4, Automatic Transmission fluid.

page page
TRANSFER CASE - ELECTRICAL
DIAGNOSTICS
DIAGNOSIS AND TESTING
C1401- TRANSFER CASE RANGE SELECT
SWITCH CIRCUIT LOW. .................. 1501
C1402- TRANSFER CASE RANGE SELECT
SWITCH CIRCUIT HIGH................... 1506
C1404- TRANSFER CASE RANGE
POSITION SENSOR CIRCUIT LOW......... 1511
C1405- TRANSFER CASE RANGE
POSITION SENSOR CIRCUIT HIGH........ 1515
C1407- TRANSFER CASE BRAKE
CONTROL CIRCUIT LOW.................. 1520
C1408-TRANSFER CASE BRAKE CONTROL
CIRCUIT HIGH............................ 1523
C140B- TRANSFER CASE MOTOR
CONTROL CIRCUIT LOW.................. 1526C140C - TRANSFER CASE MOTOR
CONTROL CIRCUIT HIGH................. 1531
C140D - TRANSFER CASE MOTOR
CONTROL CIRCUIT OPEN................. 1536
C1464-FRONT AXLE DISCONNECT
CONTROL CIRCUIT LOW.................. 1540
C1465-FRONT AXLE DISCONNECT
CONTROL CIRCUIT HIGH................. 1544
C1468-FRONT AXLE DISCONNECT
RETURN CONTROL CIRCUIT LOW......... 1548
C1469-FRONT AXLE DISCONNECT
RETURN CONTROL CIRCUIT HIGH........ 1553
C146A–FRONT AXLE DISCONNECT
RETURN CONTROL CIRCUIT OPEN........ 1557
STANDARD PROCEDURE
TRANSFER CASE VERIFICATION TEST .... 1562

C1404- TRANSFER CASE RANGE POSITION SENSOR CIRCUIT LOW
For a complete wiring diagramRefer to Section 8W