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P128D-TCM POWER CONTROL CIRCUIT 2 OPEN - TIPM
For a complete wiring diagramRefer to Section 8W.
Page 2875 of 5267

3.TOTALLY INTEGRATED POWER MODULE
Using the schematics as a guide, inspect the wire harness and connectors.
Check the TIPM harness connector terminals for corrosion, damage, or terminal push out.
Pay particular attention to all power and ground circuits.
Were any problems found?
Ye s>>
Repair as necessary.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
No>>
Replace the Totally Integrated Power Module per Service Information.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
4.INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?
Ye s>>
Repair as necessary.
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 .
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P128E-TCM POWER CONTROL CIRCUIT 2 OVERCURRENT - TIPM
For a complete wiring diagramRefer to Section 8W.
Page 2880 of 5267
P1684-BATTERY WAS DISCONNECTED
For a complete wiring diagramRefer to Section 8W.
Page 2883 of 5267

P1713-RESTRICTED MANUAL VALVE IN T2 RANGE
For a complete wiring diagramRefer to Section 8W
When Monitored:
Ignition on, engine running with the gear shift selector in a valid forwardgear.
Set Condition:
This DTC sets whenever Transmission control system detects the manual valve is in the T2 range when it
should be in OD. This is mainly an informational DTC.
Possible Causes
RELATED TRANSMISSION DTC’S PRESENT
CUSTOMER DRIVING HABITS
MIS-ADJUSTED SHIFTER CABLE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
Diagnostic Test
1.DETERMINING IF RELATED DTC’S ARE PRESENT
With the scan tool, check for other transmission DTC’s
Are there any speed sensor or gear ratio DTCs present?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom.
No>>
Go To 2
2.CHECK THE GEAR SHIFT CABLE FOR PROPER ADJUSTMENT
Check the Gear shift cable adjustment per the Service Information.
Also check the cable for possible binding or improperly routed.
Is the Gear shift cable properly adjusted and not binding or improperly routed?
Ye s>>
Go To 3
No>>
Adjust the Shifter Assembly per the Service Information.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
3.CHECK CUSTOMER DRIVING HABIT
This DTC can be set if the customer does not move the shift lever completely into the OD position (in between
gears) causing the manual valve to be in the T2 position.
When this occurs, the feed port to the clutch is restricted, the transmission will declare neutral, and this DTC will
set.
This DTC can also be set by simply bumping the shift lever toward neutral while accelerating.
With the scan tool, check the DTC EVENT DATA to help identify the conditionsin which the DTC was set.
If there are no possible causes remaining, view repair.
Repair
This DTC can be set by the shift lever inthe wrong position or not completelyin the OD position. Make
sure the customer is properly informed.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
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P1745-TRANSMISSION LINE PRESSURE TOO HIGH FOR TOO LONG
For a complete wiring diagramRefer to Section 8W
When Monitored:
Continuously with ignition on.
Set Condition:
If the transmission has been operating in an open-loop line pressure control for 2000 miles or 1000 2-3
upshifts.
Possible Causes
LINE PRESSURE DTCS PRESENT
Always perform the 42RLE Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - STANDARD PROCEDURE)
Theory of Operation
This DTC is an informational DTC to inform the technician that transmission has been operating in an open-loop line
pressure control for 2000 miles or 1000 2-3 upshifts resulting from a Line Pressure DTC. The 42RLE Transmission
is not designed to operate in open-loop line pressure control for an extended period time. This DTC is intended to
protect the transmission. If the DTC sets, the transmission controller will place the transmission into limp-in mode.
Diagnostic Test
1.CHECKFORRELATEDDTC’S
With the scan tool, check for Transmission Line Pressure DTCs.
View repair
Repair
Refer to the Transmission category and perform the appropriate symptom. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 42RLE - DIAGNOSIS AND TESTING)
Page 2885 of 5267
P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION
For a complete wiring diagramRefer to Section 8W.
Page 2890 of 5267
P1776-SOLENOID SWITCH VALVE LATCHED IN LR POSITION
For a complete wiring diagramRefer to Section 8W.