Dodge Durango (HB). Manual — part 1262
P0841-LR PRESSURE SWITCH RATIONALITY (CONTINUED)
11.
(T50) LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
Measure the resistance between ground and the (T50) LR Pressure
Switch Sense circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (T50) LR Pressure Switch Sense circuit for a
short to ground.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION
TEST - VER 1.
No
>> Go To 12
12.
PCM POWERS AND GROUNDS
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.
Were there any problems found?
Yes
>> Repair as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 13
13.
ROAD TEST THE VEHICLE
With the scan tool, clear the DTC and road test the vehicle.
Try to duplicate the conditions in which the DTC originally set using the EATX DTC EVENT DATA recorded earlier.
Did the DTC P0841 reset?
Yes
>> Replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 17
HB
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
21 - 453
P0841-LR PRESSURE SWITCH RATIONALITY (CONTINUED)
14.
LOW LINE PRESSURE
In the EATX DTC EVENT DATA recorded earlier, compare the Line Pressure and the Desired Line Pressure.
Is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure?
Yes
>> Repair as necessary to correct low line pressure. Check for low fluid level. Check the Primary Oil Filter
seal for a split, crack, or improperly installed. Refer to the Service Information for the proper installation
procedure. If the fluid level and Primary Oil Filter are OK, check the Main Regulator Valve in the Oil
Pump per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 15
15.
(T50) LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO OTHER CIRCUITS
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid/TRS Assembly harness connec-
tor.
Disconnect all PCM harness connectors.
Measure the resistance between the (T50) LR Pressure Switch Sense
circuit and all other circuits in the Transmission Solenoid/TRS Assem-
bly harness connector.
Is the resistance below 5.0 ohms between the (T50) LR Pres-
sure Switch Sense circuit and all other circuit(s) in the Trans-
mission Solenoid/TRS Assembly harness connector?
Yes
>> Repair the (T50) LR Pressure Switch Sense circuit for a
short to other circuit(s).
Perform 45RFE/545RFE TRANSMISSION VERIFICATION
TEST - VER 1.
No
>> Go To 16
16.
ROAD TEST THE VEHICLE
With the scan tool, clear the DTC and road test the vehicle.
Try to duplicate the conditions in which the DTC originally set using the EATX DTC EVENT DATA recorded earlier.
Did the DTC P0841 reset?
Yes
>> Replace the Transmission Solenoid/TRS Assembly per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 17
21 - 454
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
HB
P0841-LR PRESSURE SWITCH RATIONALITY (CONTINUED)
17.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle the wires while checking for shorted and open circuits.
With the scan tool, check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set.
Were there any problems found?
Yes
>> Repair as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Test Complete.
HB
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
21 - 455
P0845-2C HYDRAULIC PRESSURE TEST
21 - 456
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
HB
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