Jeep Liberty KJ. Manual — part 1043
4.
(A919) FUSED B+ CIRCUIT
Turn the ignition off to the lock position.
Disconnect the PCM C1 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
CAUTION: Do not probe the PCM harness connectors. Probing the
PCM harness connectors will damage the PCM terminals resulting
in poor terminal to pin connection. Install Miller Special Tool #8815
to perform diagnosis.
Using a 12-volt test light connected to ground, check the (A919) Fused
B+ circuit.
NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.
Does the test light illuminate brightly?
Yes
>> Go To 5
No
>> Repair the Fused B+ circuit for an open. If the fuse is open
make sure to check for a short to ground.
Perform 42RLE TRANSMISSION VERIFICATION TEST -
VER 1.
5.
(Z908) AND (Z977) GROUND CIRCUITS
Turn the ignition off to the lock position.
Disconnect the PCM C4 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Using a 12-volt test light connected to 12-volts, check the (Z908) and
(Z977) Ground circuits in the appropriate terminal of special tool #8815.
NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.
Does the test light illuminate brightly for all of the ground cir-
cuits?
Yes
>> Go To 6
No
>> Repair the Ground circuits for an open.
Perform 42RLE TRANSMISSION VERIFICATION TEST -
VER 1.
6.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set the 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 42RLETRANSMISSION VERIFICATION TEST - VER 1.
No
>> Test Complete.
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AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS
KJ
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 forward gear.
•
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?
Yes
>> 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?
Yes
>> 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 conditions in which the DTC was set.
If there are no possible causes remaining, view repair.
Repair
This DTC can be set by the shift lever in the wrong position or not completely in 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)
KJ
AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS
21 - 217
P1745-TRANSMISSION LINE PRESSURE TOO HIGH FOR TOO LONG
For a complete wiring diagram Refer 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.
CHECK FOR RELATED DTC’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)
21 - 218
AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS
KJ
P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION
For a complete wiring diagram Refer to Section 8W.
KJ
AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS
21 - 219
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