Jeep Grand Cherokee WK. Manual — part 1536
C1415- TRANSFER CASE MOTOR CURRENT PERFORMANCE (CONTINUED)
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?
Yes
>> Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
No
>> Test complete.
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
WK
C1444-TRANSFER CASE MOTOR OVERUSE
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on.
•
Set Condition:
A calibrated motor abuse limit has been achieved. The FDCM models the motor use and has determined that
excessive motor activations have occurred.
Possible Causes
INTERMITTENT TRANSFER CASE MOTOR OVERUSE
TRANSFER CASE SELECTOR SWITCH
FINAL DRIVE CONTROL MODULE
Diagnostic Test
1.
DTC IS ACTIVE
NOTE: Diagnose and repair any system voltage or Transfer Case related DTCs in the FDCM before continu-
ing with this test.
Ignition on, engine not running.
With the scan tool, Clear Stored DTCs.
Test drive the vehicle.
During the test drive, move the Transfer Case Selector Switch to each position several times in accordance with the
Service Information.
With the scan tool, select View DTCs.
Does this DTC reset?
Yes
>> Go to 2
No
>> Go to 4
2.
TRANSFER CASE SELECTOR SWITCH
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors relative to this circuit.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Were any problems found?
Yes
>> Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
No
>> Go to 3
WK
TRANSFER CASE - ELECTRICAL DIAGNOSTICS
21 - 955
C1444-TRANSFER CASE MOTOR OVERUSE (CONTINUED)
3.
FINAL DRIVE CONTROL MODULE
Ignition off.
Replace the Transfer Case Selector Switch in accordance with the Service Information.
Ignition on, engine not running.
With the scan tool, Clear Stored DTCs.
Test drive the vehicle.
During the test drive, move the Transfer Case Selector Switch to each position several times in accordance with the
Service Information.
With the scan tool, select View DTCs.
Does this DTC reset?
Yes
>> Replace the Final Drive Control Module in accordance with the Service Information.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
No
>> Test Complete.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
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?
Yes
>> Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
No
>> Test complete.
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
WK
C2100–BATTERY VOLTAGE LOW (FDCM)
WK
TRANSFER CASE - ELECTRICAL DIAGNOSTICS
21 - 957
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