relay DODGE RAM SRT-10 2006 Service Repair Manual

11 .CHECK THE (T9) OD PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT
Turn the ignition off to the lock position.
Disconnect all PCM harness connectors.
Disconnect the Transmission Solenoid/TRS Assembly harness connec-
tor.
Measure the resistance between the (T9) OD Pressure Switch Sense
circuit and all other circuits in the Transmission Solenoid/TRS Assembly
harness connector.
Is the resistance below 5.0 ohms between the (T9) OD Pressure
Switch Sense circuit and any other circuit(s) in the Transmis-
sion Solenoid/TRS Assembly harness connector?
Ye s>>
Repair the (T9) OD Pressure Switch Sense circuit for a
short to another circuit(s).
Perform 45RFE/545RFE TRANSMISSION VERIFICATION
TEST - VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PRO-
CEDURE)
No>>
Go To 12
12.CHECK TO SEE IF THE DTC RESETS
Reconnect all previously disconnected connectors.
With the scan too, erase transmission DTCs.
Test drive the vehicle, use the DTC EVENT DATA recorded earlier to help duplicate the conditions when the DTC
originality set.
Does the DTC P0871 reset?
Ye s>>
Go To 13
No>>
Go To 22
13.CHECK THE POWERTRAIN CONTROL MODULE
Remove the Transmission Control Relay.
Operate the vehicle in Drive.
Is the transmission slipping while in Drive?
Ye s>>
Go To 14
No>>
Using the schematics as a guide, check the Powertrain Control Module (PCM)terminals for corrosion,
damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems
are found, replace the PCM per the Service Information. With the scan tool,perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
14.AIR CHECK TRANSMISSION CLUTCH OPERATION
Perform an Air Check Transmission Clutch Operation procedure per the Service Information.

When Monitored:
In any forward gear with engine speed above 1000 RPM shortly after a shift and every minute thereafter.
Set Condition:
After a shift into a forward gear, with engine speed above 1000 RPM, the PCM momentarily turns on element
pressure to the Clutch circuits that don’t have pressure to identify the correct Pressure Switch closes. If the
Pressure Switch does not close 2 times, the DTC sets.
Possible Causes
LINE PRESSURE SENSOR
TRANSMISSION FLUID CONTAMINATION
RELATED DTC’S PRESENT
TRANSMISSION SOLENOID/TRS ASSEMBLY
EXCESSIVE DEBRIS IN OIL PAN
POOR LINE PRESSURE SENSOR CONNECTION
(T29) UD PRESSURE SWITCH SENSE CIRCUIT OPEN
TRANSMISSION CONTROL RELAY DTCS PRESENT
(T29) UD PRESSURE SWITCH SENSE CIRCUIT OPEN
(F856) 5-VOLT SUPPLY CIRCUIT OPEN
(T29) UD PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
(F856) 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND
(T29) UD PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
TRANSMISSION SOLENOID/TRS ASSEMBLY
INTERNAL TRANSMISSION
POWERTRAIN CONTROL MODULE
Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting Procedure before proceeding. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Theory of Operation
The Transmission Control System tests the pressure switches when they areoff. The test verifies that the switches
are operational (They will close with pressure applied). The Transmission Control System verifies that the switch
closes when the corresponding element is applied. If a switch fails to close, it is re-tested. If it fails the second test,
the DTC will set, the MIL will illuminate and the transmission system will default to the orderly Shutdown routine.
Diagnostic Test
1.CHECK IF RELATED DTCS ARE PRESENT
With the scan tool, check for other transmission DTCs.
Is there any Loss of Prime, TCM Power Input Signal, and/or Line Pressure Sensor DTCs present?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom. If the DTC, P0944-LOSS OF
PRIME is present, perform its respective test first.
No>>
Go To 2

When Monitored:
When the ignition is turned from
OFFposition toRUNposition and/or the ignition is turned fromSTART
position toRUNposition.
Set Condition:
This DTC is set if the Powertrain Control Module senses greater than 3.0 volts on the Transmission Control
Relay Output circuits prior to a request from the PCM to TIPM to energize theTransmission Output circuits.
Possible Causes
TIPM DTCS PRESENT
(T15) TRANSMISSION CONTROL CIRCUIT SHORT TO VOLTAGE
(T16) TRANSMISSION CONTROL OUTPUT CIRCUIT SHORT VOLTAGE
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE
Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting Procedure before proceeding. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Theory of Operation
The Transmission Control Output circuit is used to supply power to the Transmission Solenoid/TRS Assembly and to
the PCM when in normal operating mode. The purpose of the Transmission Output circuit is to allow the Transmis-
sion Control System to turn off the power to the Transmission Solenoid/TRSAssembly in event that the transmission
should need to be placed into “limp-in” mode due to a DTC.
After a PCM reset, (ignition switch turned to the run position, or after cranking the engine) the Transmission Control
System verifies that the Transmission Output circuit is open by checking for voltage on the Transmission Output
circuits before the Transmission Control System request for the circuit to be powered up. The request is sent by a
direct circuit control from the PCM tothe TIPM. If voltage is detected on the Transmission Output circuits before the
request is sent, the DTC will set.
Diagnostic Test
1.CHECK FOR TCM TIPM DTCS
With the scan tool under TIPM, check for TCM Power Input DTCs.
Are there any TIPM TCM Power Input DTCS present?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom.
No>>
Go To 2
2.CHECK TO SEE IF DTC P0883 IS CURRENT
With the scan tool, check the STARTS SINCE SET counter.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter set to 0?
Ye s>>
Go To 3
No>>
Go To 6

When Monitored:
When the ignition is turned from
OFFposition toRUNposition and/or the ignition is turned fromSTART
position toRUNposition.
Set Condition:
This DTC is set if the Powertrain Control Module senses voltage on any of thepressure switch inputs prior to
the Transmission Control Output circuit being energized.
Possible Causes
PRESSURE SWITCH SENSE CIRCUITS SHORT TO VOLTAGE
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE
Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting Procedure before proceeding. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Theory of Operation
The Totally Integrated Control Module (TIPM) replaces the Transmission control relay. The Transmission Control
Output circuit It is used to supply power to the solenoids and pressure switches (Transmission Solenoid/TRS
Assembly) when the transmission is in normal operating mode. When the Transmission Control Output circuit is off,
no power is supplied and the transmission.
Immediately after a controller reset (ignition key turned to the
runposition or after cranking engine), the TCM ver-
ifies that the Transmission Control Output circuits are open by checking for no voltage at the transmission control
output terminals at the PCM. After this is verified, the voltage at the pressure switches are checked. There should
be no voltage on the pressure switches at this time. The PCM will then activate the relay.
Diagnostic Test
1.CHECK FOR TIPM TCM DTCS
With the scan tool under TIPM, check for TCM Power Control DTCs.
Are there any TCM Power Control DTCs present?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom.
No>>
Go To 2
2.CHECK TO SEE IF DTC P0890 IS PRESENT
With the scan tool, Check the STARTS SINCE SET counter for P0890.
NOTE: This counter only applies to the last DTC set.
Is the
Starts Since Setcounter set at 0?
Ye s>>
Go To 3
No>>
Go To 5

INSTALLATION .............................. 954
GEARTRAIN-PLANETARY
DESCRIPTION ............................... 955
OPERATION ................................. 956
DISASSEMBLY .............................. 957
CLEANING .................................. 957
INSPECTION ................................ 957
ASSEMBLY .................................. 958
MECHANISM-SHIFT
DESCRIPTION ............................... 959
OPERATION ................................. 959
VALVE-SOLENOID SWITCH
DESCRIPTION ............................... 960
OPERATION ................................. 960
CONVERTER-TORQUE
DESCRIPTION ............................... 961
OPERATION ................................. 964
REMOVAL ................................... 966
INSTALLATION .............................. 967
RELAY-TRANSMISSION CONTROL
DESCRIPTION ............................... 968OPERATION ................................. 968
SENSOR-TRANSMISSION RANGE
DESCRIPTION ............................... 969
OPERATION ................................. 969
ASSEMBLY-TRANSMISSION SOLENOID/TRS
DESCRIPTION ............................... 970
OPERATION ................................. 970
REMOVAL ................................... 971
INSTALLATION .............................. 972
SENSOR-TRANSMISSION TEMPERATURE
DESCRIPTION ............................... 973
OPERATION ................................. 973
BODY-VALVE
DESCRIPTION ............................... 974
OPERATION ................................. 975
REMOVAL ................................... 976
DISASSEMBLY .............................. 977
CLEANING .................................. 980
INSPECTION . . .............................. 981
ASSEMBLY .................................. 983
INSTALLATION .............................. 986

AUTOMATIC TRANSMISSION - 45RFE/545RFE-SERVICEINFORMATION
DESCRIPTION
The 45RFE/545RFE automatic transmissions is a sophisticated, multi-range, electronically controlled transmission
which combines optimized gear ratios for responsive performance, state of the art efficiency features and low NVH.
Other features include driver adaptive shifting and three planetary gearsets to provide wide ratio capability with
precise ratio steps for optimum driveability. The three planetary gear sets also make available a unique alternate
second gear ratio. The primary 2nd gear ratio fits between 1st and 3rd gearsfor normal through-gear accelerations.
The alternate second gear ratio (2prime) allows smoother 4-2 kickdowns athigh speeds to provide 2nd gear pass-
ing performance over a wider highway cruising range.
The hydraulic portion of the transmission consists of the transmission fluid, fluid passages, hydraulic valves, and
various line pressure control components.
The primary mechanical components of the transmission consist of the following:
Three multiple disc input clutches
Three multiple disc holding clutches
Five hydraulic accumulators
Three planetary gear sets
Dual Stage Hydraulic oil pump
Valve body
Solenoid pack
The Transmission Control Module (TCM) is the “heart” or “brain” of the electronic control system and relies on infor-
mation from various direct and indirect inputs (sensors, switches, etc.)to determine driver demand and vehicle oper-
ating conditions. Depending on the vehicle configuration, the TCM may be astandalone module or it it may be
housed along with the Powertrain Control Module (PCM) in a single module. With this information, the TCM can
calculate and perform timely and quality shifts through various output orcontrol devices (solenoid pack, transmission
control relay, etc.).
TRANSMISSION IDENTIFICATION
Transmission identification numbers are stamped (1)
on the left side of the case just above the oil pan seal-
ing surface. Refer to this information when ordering
replacement parts. A label is attached to the transmis-
sion case above the stamped numbers. The label
gives additional information which may also be neces-
sary for identification purposes.
GEAR RATIOS
The 45RFE gear ratios are:

RELAY-TRANSMISSION CONTROL
DESCRIPTION
The relay is supplied fused B+ voltage, energized by the TCM, and is used to supply power to the solenoid pack
when the transmission is in normal operating mode.
OPERATION
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, the TCM energizes the relay. Prior to this, the TCM verifies that the contacts are open by checking
for no voltage at the switched batteryterminals. After this is verified, the voltage at the solenoid pack pressure
switches is checked. After the relay is energized, the TCM monitors the terminals to verify that the voltage is greater
than 3 volts.

SENSOR-TRANSMISSION RANGE
DESCRIPTION
The Transmission Range Sensor (TRS) is part of the solenoid module, which is mounted to the top of the valve
body inside the transmission.
The Transmission Range Sensor (TRS) has five switch contact pins that:
Determine shift lever position
Supply ground to the Starter Relay in Park and Neutral only.
Supply +12 V to the backup lamps in Reverse only.
The TRS also has an integrated temperature sensor (thermistor) that communicates transmission temperature to the
TCM and PCM.
OPERATION
The Transmission Range Sensor (TRS) communicates shift lever position tothe TCM as a combination of open and
closed switches. Each shift lever position has an assigned combination ofswitch states (open/closed) that the TCM
receives from four sense circuits. The TCM interprets this information and determines the appropriate transmission
gear position and shift schedule.
There are many possible combinations of open and closed switches (codes).Seven of these possible codes are
related to gear position and five are recognized as “between gear” codes. This results in many codes which should
never occur. These are called “invalid” codes. An invalid code will result in a DTC, andthe TCM will then determine
the shift lever position based on pressure switch data. This allows reasonably normal transmission operation with a
TRS failure.
GEAR C5 C4 C3 C2 C1
ParkCL OP OP CL CL
Te m p 1CL OP OP CL OP
ReverseOP OP OP CL OP
Te m p 2OP OP CL CL OP
Neutral 1OP OP CL CL CL
Neutral 2OP CL CL CL CL
Te m p 3OP CL CL CL OP
DriveOP CL CL OP OP
Te m p 4OP CL OP OP OP
Manual 2CL CL OP OP OP
Te m p 5CL OP OP OP OP
Manual 1CL OP CL OP OP

ASSEMBLY-TRANSMISSION SOLENOID/TRS
DESCRIPTION
The transmission solenoid/TRS assembly is internal to
the transmission and mounted on the valve body
assembly. The assembly consists of six solenoids that
control hydraulic pressure to the six friction elements
(transmission clutches), and the torque converter
clutch. The pressure control solenoid is located on the
side of the solenoid/TRS assembly. The solenoid/TRS
assembly also contains five pressure switches that
feed information to the TCM.
OPERATION
SOLENOIDS
Solenoids are used to control the L/R, 2C, 4C, OD, and UD friction elements.The reverse clutch is controlled by
line pressure and the position of the manual valve in the valve body. All thesolenoids are contained within the
Solenoid and Pressure Switch Assembly. The solenoid and pressure switch assembly contains one additional sole-
noid, Multi-Select (MS), which serves primarily to provide 2nd and 3rd gear limp-in operation.
The solenoids receive electrical power from the Transmission Control Relay through a single wire. The TCM ener-
gizes or operates the solenoids individually by grounding the return wireof the solenoid as necessary. When a
solenoid is energized, the solenoid valve shifts, and a fluid passage is opened or closed (vented or applied),
depending on its default operating state. The result is an apply or releaseof a frictional element.
The MS and UD solenoids are normallyapplied to allow transmission limp-inin the event of an electrical failure.
The continuity of the solenoids and circuits are periodically tested. Each solenoid is turned on or off depending on
its current state. An inductive spike should be detected by the TCM during this test. If no spike is detected, the
circuit is tested again to verify the failure. In addition to the periodic testing, the solenoid circuits are tested if a
speed ratio or pressure switch error occurs.
PRESSURE SWITCHES
The TCM relies on five pressure switches to monitor fluid pressure in the L/R, 2C, 4C, UD, and OD hydraulic cir-
cuits. The primary purpose of these switches is to help the TCM detect when clutch circuit hydraulic failures occur.
The switches close at 23 psi and open at 11 psi, and simply indicate whether or not pressure exists. The switches
are continuously monitored by the TCM for the correct states (open or closed) in each gear as shown in the fol-
lowing charts 45RFE PRESSURE SWITCH STATES and 545RFE PRESSURE SWITCH STATES :
45RFE PRESSURE SWITCH STATES

7 check balls
OPERATION
NOTE: Refer to the Hydraulic Schematics for a visual aid in determining valve location, operation and
design.
SOLENOID SWITCH VALVE
The Solenoid Switch Valve (SSV) controls the direction of the transmission fluid when the L/R-TCC solenoid is ener-
gized.
The Solenoid Switch Valve controls line pressure from the LR-TCC solenoid. In 1st gear, the SSV will be in the
downshifted position, thus directing fluid to the L/R clutch circuit. In 2nd, 3rd, 4th, and fifth gears, the solenoid switch
valve will be in the upshifted position and directs the fluid into the torque converter clutch (TCC) circuit.
When shifting into 1st gear, a special hydraulic sequence is performed to ensure SSV movement into the down-
shifted position. The L/R pressure switch is monitored to confirm SSV movement. If the movement is not confirmed
(the L/R pressure switch does not close), 2nd gear is substituted for 1st. ADTC will be set after three unsuccessful
attempts are made to get into 1st gear in one given key start.
MANUAL VALVE
The manual valve is a relay valve. The purpose of the
manual valve is to direct fluid to the correct circuit
needed for a specific gear or driving range. The man-
ual valve, as the name implies, is manually operated
by the driver with a lever located on the top of the
valve body. The valve is connected mechanically by a
cable to the gearshift mechanism. The valve is held in
each of its positions by a roller detent spring (2) that
engages the roostercomb of the TRS selector plate
(1).