2006 DODGE RAM SRT-10 automatic transmission

6.CHECK TRANSMISSION FOR SLIPPAGE
Erase DTCs and road test the vehicle.
Check the transmission operation in reverse and all forward gears.
During the road test, was there any obvious slippage noted in 4th gear or a runaway during the 3-4
shift?
Ye s>>
Go To 8
No>>
Go To 7
7.CHECK IF DTC RESETS
With the scan tool, check for Transmission DTCs after the road test.
Did the DTC P0734 reset?
Ye s>>
Go To 8
No>>
Te s t C o m p l e t e .
8.CHECK INTERNAL TRANSMISSION
Remove the Transmission Oil Pan and Valve Body per the Service Informationand check for the following:
Excessive debris in the oil pan.
Remove the Valve Body and check if the accumulator cover is intact and the 4Ctower seal is not cut or split.
OD and 4C accumulator pistons for cracks and/or cut seals.
Solenoid Switch Valve and its plugs for stickiness or wear.
Cut or missing #5 and/or #6 check ball.
OD bleed orifice on top of the Valve Body
Air check the OD and 4C hydraulic clutch circuits for excessive leakage. Refer to the Service information.
NOTE: Both the OD and 4C hydraulic clutch circuits contain a small bleed orifice. A small amount of air
leakage is considered normal. The OD hydraulic clutch circuit bleed orifice connects to the Reverse input
clutch hydraulic cavity. A small amount of air leakage into the Reverse hydraulic clutch circuit is considered
normal.
Were there any problems found?
Ye s>>
Repair as necessary. Refer to the Service Information for proper repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Go To 9
9.CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY
Was there no reverse gear during the road test?
Ye s>>
Go To 10
No>>
Replace Transmission Solenoid/TRS Assembly per the Service Information. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE/TRANS SOLENOID/TRS ASSY - REMOVAL)
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)

10.CHECK ROAD TEST RESULTS
During the road test, was there no 2nd gear and no 4th gear, but 3rd gear (limp-in) was OK?
Ye s>>
Go To 11
No>>
Go To 12
11 .CHECK FOR BROKEN REVERSE SUN GEAR WELD
Working through the windows in the bottom of the case, check for a broken Reverse Sun gear weld to the reaction
carrier as follows:
1) Hold the Transmission Output Shaft by holding the Transmission Manual Lever in the park position.
2) Rotate the Input Annulus gear and drive shell (the drum that encloses thetwo rearmost carriers).
3) Check to see if the reaction carrier (the front most carrier, whose outershell is splined to the 2C clutch) is rotat-
ing faster than the drive shell is being turned.
Is the reaction carrier turning faster than the drive shell?
Ye s>>
Replace Transmission Solenoid/TRS Assembly per the Service Information. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE/TRANS SOLENOID/TRS ASSY - REMOVAL)
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Replace the reaction carrier per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
12.CHECK FOR NO REVERSE
Remove the Transmission per the Service Information and inspect the weld on the reverse carrier hub.
Were there any problems found?
Ye s>>
Repair as necessary. Refer to the Service Information for proper repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Disassemble and inspect the input clutch assembly. Check the OD and Reverse clutch seals, discs, and
bleed orifice (in the OD/Reverse clutch piston). Check the OD hub and shaft. Repair as necessary.
Refer to the Service Information for proper repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)

P0735-GEAR RATIO ERROR IN 5TH
For a complete wiring diagramRefer to Section 8W
When Monitored:
Continuously with the ignition on, engine running, with the transmissionin gear.
Set Condition:
If the ratio of the Input RPM to the Output RPM does not match the current gearratio. This DTC can take up
to five minutes of problem identification before illuminating the MIL.
Possible Causes
LOW FLUID LEVEL
INPUT SPEED SENSOR OR WIRING
VALVE BODY ACCUMULATOR COVER FAILED
CUT OD OR 2C ACCUMULATOR SEAL
CRACKED OD OR 2C ACCUMULATOR PISTON
BROKEN OR MISSING OD BLEED ORIFICE IN MAIN VALVE BODY
CUT 2C TOWER SEAL
TRANSMISSION SOLENOID/TRS ASSEMBLY
CUT OR MISSING #5, #6, OR #7 CHECK BALL
WORN SOLENOID SWITCH VALVE OR PLUGS
CUT OD OR 2C PISTON SEAL
STUCK MAIN REGULATOR VALVE
BURNED OD OR 2C CLUTCH
BROKEN OR MISSING 2C BLEED ORIFICE IN 2C/4C RETAINER
BROKEN REACTION SHAFT SUPPORT SEAL RING
POOR MACHINING ON PUMP VALVE BODY FACE
LOOSE / MISSING DRIBBLER ORIFICE ASSEMBLY IN REACTION SHAFT SUPPORT
CRACKED / LOOSE / MISSING OD/REVERSE PISTON BLEED ORIFICE
BROKEN REVERSE CARRIER HUB WELD
BROKEN REVERSE SUN GEAR WELD TO REACTION CARRIER
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 system uses two speed sensors, one to measure input RPM and one to measure output RPM.
These inputs are essential for proper transmission operation. Therefore, the integrity of this data is verified through
the following checks:
1) Once in a particular gear, if the gear ratio varies from the correct gear ratio, the corresponding in-gear trouble
code is set (DTCs P0731-36).
2) An excessive change in input or output speeds indicating signal intermittent may result in the DTCs P0715 and/or
P0720 being set.
3) If the common speed sensor ground circuit is lost, both sensor inputs will read the pulses from the input speed
sensor when at a stop in neutral. Since the input speed sensor reads 60 teethfrom the input clutch hub and the
output speed sensor reads 30 teeth from the park gear, the result is an apparent speed ratio of 1:2 and may cause
the DTC P1794 to set.

Diagnostic Test
1.CHECKFORRELATEDDTCS
With the scan tool, check for other transmission DTC’s
If any of these DTCs are present, perform their respective tests first.
Are there any Transmission; solenoid, line pressure, speed sensor, and/or loss of prime DTCs present?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom. If any of these DTCs are
present, they may cause a Speed Ratio Error. Perform the test for P0944 firstifitispresent.
No>>
Go To 2
2.CHECK DTC EVENT DATA
With the scan tool, read and record the DTC EVENT DATA.
NOTE: Make sure to record all DTC EVENT DATA stored in the scan tool for future reference in this test
procedure.
Does the DTC EVENT DATA display information for the DTC P0735?
Ye s>>
Go To 4
No>>
Go To 3
3.CHECK THE TARGET GEAR
In the DTC EVENT DATA recorded earlier, does the DTC EVENT DATA show the DTC P1790, with Target
gear = 5th, or with both the 2C and OD clutches applying?
Ye s>>
Go To 4
No>>
Go To 6
4.CHECK INPUT RPM
In the DTC EVENT DATA recorded earlier, does the Input RPM read zero?
Ye s>>
Refer to the Transmission category and perform the diagnostic procedure for P0715 (Input Speed Sen-
sor Error). Diagnose the DTC as if it is set and current.
No>>
Go To 5
5.CHECK LINE PRESSURE READING
In the DTC EVENT DATA recorded earlier, is the line pressure reading more than 10 PSI below the desired
line pressure reading?
Ye s>>
Remove the Transmission Oil pan and check the Transmission Oil filter for improper installation or
plugged, if Primary oil filter is OK, check the main regulator valve in pump. If excessive debris is in the
oil pan, check clutches and repair as necessary. Refer to the Service Information for proper repair pro-
cedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Go To 6

6.CHECK TRANSMISSION FOR SLIPPAGE
Erase DTCs and road test the vehicle.
Check the transmission operation in reverse and all forward gears.
During the road test, was there any obvious slippage noted in 5th gear or a runaway during the 4–5
shift?
Ye s>>
Go To 8
No>>
Go To 7
7.CHECK IF DTC RESETS
With the scan tool, check for Transmission DTCs after the road test.
Did the DTC P0735 reset?
Ye s>>
Go To 8
No>>
Te s t C o m p l e t e .
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
8.CHECK INTERNAL TRANSMISSION
Remove the Transmission Oil Pan and Valve Body, per the Service Information, and check for the following:
Excessive clutch and or metal debris in the oil pan.
If the accumulator cover is intact and the 2C tower seal is not cut or split.
OD and 2C accumulator pistons for cracks or cut seals.
Solenoid Switch Valve and its plugs for stickiness or wear.
Cut or missing #5, #6, or #7 check ball.
OD bleed orifice on top of the valve body.
Air check the OD and 2C hydraulic clutch circuits for excessive leakage. Refer to the Service information.
NOTE: Both the OD and 2C hydraulic clutch circuits contain a small bleed orifice. A small amount of air
leakage is considered normal. The OD hydraulic clutch circuit bleed orifice connects to the Reverse input
clutch hydraulic cavity. A small amount of air leakage into the Reverse hydraulic clutch circuit is considered
normal.
Were there any problems found?
Ye s>>
Repair as necessary. Refer to the Service Information for proper repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Replace Transmission Solenoid/TRS Assembly per the Service Information. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE/TRANS SOLENOID/TRS ASSY - REMOVAL)
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)

P0736-GEAR RATIO ERROR IN REVERSE
For a complete wiring diagramRefer to Section 8W
When Monitored:
Continuously with the ignition on, engine running, with the transmissionin gear.
Set Condition:
If the ratio of the Input RPM to the Output RPM does not match the current gearratio. This DTC can take up
to five minutes of problem identification before illuminating the MIL
Possible Causes
LOW FLUID LEVEL
CUT LR TOWER SEAL ON MAIN VALVE BODY
CUT LR CLUTCH PISTON SEALS
BROKEN OR MISSING LR CLUTCH BLEED ORIFICE (IN LR CLUTCH RETAINER)
CUT LR ACCUMULATOR PISTON SEAL IN MAIN VALVE BODY
CRACKED LR ACCUMULATOR PISTON IN MAIN VALVE BODY
CUT OD/REV PISTON SEALS
BROKEN OR MISSING OD/REV BLEED ORIFICE (IN OD/REV CLUTCH PISTON)
BROKEN REVERSE CARRIER HUB WELD
BROKEN REVERSE SUN GEAR WELD TO THE REACTION CARRIER
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 system uses two speed sensors, one to measure input RPM and one to measure output RPM.
These inputs are essential for proper transmission operation. Therefore, the integrity of this data is verified through
the following checks:
1) Once in a particular gear, if the gear ratio varies from the correct gear ratio, the corresponding in-gear trouble
code is set (DTCs P0731-36).
2) An excessive change in input or output speeds indicating signal intermittent may result in the DTCs P0715 and/or
P0720 being set.
3) If the common speed sensor ground circuit is lost, both sensor inputs will read the pulses from the input speed
sensor when at a stop in neutral. Since the input speed sensor reads 60 teethfrom the input clutch hub and the
output speed sensor reads 30 teeth from the park gear, the result is an apparent speed ratio of 1:2 and may cause
the DTC P1794 to set.
Diagnostic Test
1.CHECKFORRELATEDDTCS
With the scan tool, check for other transmission DTC’s
Are there any Transmission; solenoid, line pressure, speed sensor, and/or loss of prime DTC’s present?
Ye s>>
Refer to appropriate symptom in the Transmission category. Perform the test for P0944-LOSS OF
PRIME first if it is present.
No>>
Go To 2

2.CHECK IF DTC IS CURRENT
With the scan tool, perform the Reverse Gear Clutch test. Follow the instructions on the scan tool.
Increase the throttle angle, TPS degree, to 30°, for no more than a few seconds.
CAUTION: Do not overheat the transmission.
NOTE: Make sure to record all DTC EVENT DATA stored in the scan tool for future reference in this test
procedure.
Did the clutch test pass, input speed remain at zero?
Ye s>>
Go To 3
No>>
Go To 4
3.CHECK DTC EVENT DATA
The conditions necessary to set this DTC are not currently present.
With the scan tool, check the DTC EVENT DATA to help identify the conditionsin which the DTC was set.
Does the DTC EVENT DATA show an input speed reading of zero?
Ye s>>
Go To 8
No>>
Go To 4
4.POSSIBLE INTERNAL TRANSMISSION CAUSES
Remove the Transmission Oil Pan and Valve Body and check the following per the Service Information:
Clutch or metal debris in the pan
LR clutch tower seal on the main valve body or cuts and the LR accumulator piston and seals.
Air check the Reverse and LR Hydraulic Clutch circuits (in the case) for excessive air leakage.
NOTE: Both Hydraulic Clutch circuitscontain a small bleed orifice , a small amount of air leakage is normal.
The Reverse hydraulic clutch circuit bleed orifice connects to the OD hydraulic clutch cavity. A small
amount of air leakage into the OD hydraulic clutch circuit is considered normal.
Were there any problems found?
Ye s>>
Repair as necessary. If clutch debris is present, remove the transmissionand inspect the Reverse and
LR clutches, and inspect the Transmission Oil Pump and Main Regulator Valve for damage or sticking
in its bore.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Go To 5
5.CLUTCH TEST FAILURE
Did the clutch test fail in reverse?
Ye s>>
Go To 6
No>>
Te s t c o m p l e t e .
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)

6.CHECK FOR BROKEN REVERSE SUN GEAR WELD
Working through the windows in the bottom of the case, check for a broken Reverse Sun gear weld to the reaction
carrier as follows:
1) Hold the Transmission Output Shaft by holding the Transmission Manual Lever in the park position.
2) Rotate the Input Annulus gear and drive shell, (the drum that encloses the two rearmost carriers).
3) Check to see if the reaction carrier (the front-most carrier, whose outer shell is splined to the 2C clutch) is rotat-
ing faster than the drive shell is being turned.
Is the reaction carrier turning faster than the drive shell?
Ye s>>
Go To 7
No>>
Replace the reaction carrier per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
7.CHECK REVERSE CARRIER HUB
Remove the Transmission per the Service Information and inspect the weld on the reverse carrier hub.
Were there any problems found?
Ye s>>
Repair as necessary. Refer to the Service Information for proper repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Disassemble and inspect the input clutch assembly. Check the Reverse clutch reaction plate snap ring.
Check the OD and Reverse clutch seals, discs, and bleed orifice (in the OD/Reverse clutch piston).
Check the Reverse hub and shaft. Repair as necessary. Refer to the Service Information for proper
repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
8.CHECK FOR INTERMITTENT OPERATION
Intermittent gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits and/or Speed
Sensor Ground circuit.
Remove the Ignition Switch Feed fuse from the TIPM.
CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being
startedingear.
WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in
personal injury or death.
Install the Transmission Simulator, Miller tool #8333.
Check the Speed Sensor wiring and connectors for good connection, then performawiggletestusingtheTrans-
mission Simulator, Miller tool #8333.
Were there any problems found?
Ye s>>
Repair as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Te s t c o m p l e t e .