2006 DODGE RAM SRT-10 Service Repair Manual

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Page 2889 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 7.(T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
Ignition on, engine not running.
With the scan tool under TIPM, actuate the Transmission.
Measure the voltage of the (T50) L/R Pressure Switc

Page 2890 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P1776-SOLENOID SWITCH VALVE LATCHED IN LR POSITION
For a complete wiring diagramRefer to Section 8W.

Page 2891 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
Every 7 ms when doing PEMCC or FEMCC.
Set Condition:
Must be in partial or full EMCC. The DTC is set if L/R pressure is detected high for the fourth time.
Possible Causes
RELATED DTC P

When Monitored:
Every 7 ms when doing PEMCC or FEMCC.
Set Condition:
Must be in partial or full EMCC. The DTC is set if L/R pressure is detected high for the fourth time.
Possible Causes
RELATED DTC P0841 PRESENT
DTC EVENT DATA SHOWS TRS CODE TR2 - SHIFT LEVER OR MANUAL CONTROL VALVE IN A INVA L I D
POSITION
SHIFTER CABLE OUT OF ADJUSTMENT
SOLENOID SWITCH VALVE STICKING IN ITS BORE
(T50) L/R PRESSURE SWITCH SENSE CIRCUIT OPEN
(T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
(T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
VA LV E B O D Y
POWERTRAIN CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
Theory of Operation
The Solenoid Switch Valve, an internal, hydraulically operated valve, controls the direction of the transmission fluid
when the L/R solenoid is energized. When the solenoid switch valve is in thedownshifted position and the L/R
solenoid is energized, fluid is directed to the L/R element for 1st gear. When the solenoid switch valve is In the
up-shifted position (2nd, 3rd, and 4th gear) and the L/R solenoid is energized, fluid is directed into the Lockup
Switch Valve which controls the Torque Converter Clutch. When doing PEMCCor FEMCC, the L/R pressure switch
should indicate no pressure if the solenoid switch valve is in the L/R position. If the L/R pressure switch indicates
pressure for some time while in partial or full EMCC, the EMCC operation is aborted and momentarily inhibited to
avoid accidental application of the L/R clutch. EMCC is attempted again when there is no L/R pressure. The fourth
detection of L/R pressure while in PEMCC or FEMCC will result in setting theDTC. Torque converter EMCC oper-
ation inhibited. MIL on after 5 min. of substituted operation.
Diagnostic Test
1.DETERMINING IF RELATED DTC’S ARE PRESENT
With the scan tool, check for other Transmission DTC’s
Is the DTC P0841 present also?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom.
No>>
Go To 2
2.CHECK THE DTC EVENT DATA FOR TRS CODE TR2
With the scan tool, check the DTC EVENT DATA for P1776.
Does the DTC EVENT DATA show a TRS Code of TR2?
Ye s>>
This indicates the shift lever and the manual control valve were in an invalid position between Neutral
and OD. Check the shifter cable for: proper adjustment, binding, friction, improper routing, or the shifter
was moved in transit. Repair as necessary.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
No>>
Go To 3

Page 2892 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.CHECK TO SEE IF DTC P1776 IS CURRENT
With the scan tool, check the STARTS SINCE SET counter for P1776.
NOTE: This counter only applies to the last DTC set.
Is the status Active or is the STARTS SINC

3.CHECK TO SEE IF DTC P1776 IS CURRENT
With the scan tool, check the STARTS SINCE SET counter for P1776.
NOTE: This counter only applies to the last DTC set.
Is the status Active or is the STARTS SINCE SET counter 2 or less for this DTC?
Ye s>>
Go To 4
No>>
Go To 9
4.CHECK THE PCM AND WIRING USING THE TRANSMISSION SIMULATOR
Turn the ignition off to the lock position.
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 and the ElectronicTransmission Adapter kit.
Ignition on, engine not running.
With the Transmission Simulator, turn the Pressure Switch selector switchtoL/R.
With the scan tool, monitor the L/R Pressure Switch State while pressing the Pressure Switch Test button.
Did the Pressure Switch state change from open to closed when the test button was pressed?
Ye s>>
Go To 5
No>>
Go To 6
5.CHECK THE SOLENOID SWITCH VALVE FOR STICKING
Remove the transmission oil pan and Valve body and inspect the Solenoid Switch Valve for sticking in its bore,
repair or replace as necessary.
NOTE: This DTC may be caused by debris lodged in the Transmission Solenoid Switch Valve bore. If debris
is found, clean the valve body and reassemble the transmission per the Service Information.
With the scan tool, record the DTC EVENT DATA for P1776 and erase DTCs.
Reassemble the transmission and test drive the vehicle. Try to duplicate the original set conditions using the DTC
EVENT DATA recorded earlier.
With the scan tool, check Transmission DTCs.
Did the DTC P1776 reset?
Ye s>>
Replace the Transmission Solenoid Assembly per the Service Information.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
No>>
Te s t C o m p l e t e
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)

Page 2893 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 6.CHECK THE (T50) L/R PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN
Turn the ignition off to the lock position.
Disconnect the PCM C4 harness connector.
Disconnect the Transmission Solenoid/Pressure Switc

Page 2894 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 8.CHECK THE (T50) L/R PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE
Ignition on, engine not running.
With the scan tool under TIPM, actuate the Transmission.
Measure the voltage of the (T50) L/

Page 2895 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P1790-FAULT IMMEDIATELY AFTER SHIFT
For a complete wiring diagramRefer to Section 8W.
When Monitored:
After a Gear Ratio Error code is stored.
Set Condition:
After a Gear Ratio Error DTC has already b

Page 2896 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P1794-SPEED SENSOR GROUND ERROR
For a complete wiring diagramRefer to Section 8W.

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