Jeep Grand Cherokee WK. Manual — part 1535
C1414–NEUTRAL SELECT SWITCH CIRCUIT STUCK
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
WK
C1414–NEUTRAL SELECT SWITCH CIRCUIT STUCK (CONTINUED)
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on and no system undervoltage or overvoltage condition present.
•
Set Condition:
Valid voltage for Neutral switch active present for a calibratable time.
Possible Causes
INTERMITTENT NEUTRAL SELECT SWITCH CIRCUIT STUCK DTC
TRANSFER CASE SELECTOR SWITCH
FINAL DRIVE CONTROL MODULE
Diagnostic Test
1.
DTC IS ACTIVE
Turn the ignition on.
With the scan tool, select View DTCs in the Final Drive Control Module.
Is the status Active for this DTC?
Yes
>> Go to 2
No
>> Go to 4
2.
TRANSFER CASE SELECTOR SWITCH
Turn the ignition off.
Disconnect the Transfer Case Selector Switch.
Ignition on, engine not running.
With the scan tool select Data Display and read the 4wd Range
Switch Voltage.
The switch voltage should be approximately 0 volts.
Turn the ignition off.
Connect a jumper wire between the (K504) Drivetrain 5 Volt Supply
circuit and the (K977) Mode Select circuit in the Transfer Case Selec-
tor Switch connector.
Ignition on, engine not running.
With the scan tool, read the 4wd Range Switch Voltage.
The switch voltage should be approximately 5 volts.
Does the voltage display as described?
Yes
>> Replace the Transfer Case Selector Switch.
Perform the TRANSFER CASE VERIFICATION TEST-
VER 1.
No
>> Go To 3
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
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C1414–NEUTRAL SELECT SWITCH CIRCUIT STUCK (CONTINUED)
3.
FINAL DRIVE CONTROL MODULE
View repair.
Repair
Replace the Final Drive Control Module in accordance with the Service information.
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
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C1415- TRANSFER CASE MOTOR CURRENT PERFORMANCE
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on and no system undervoltage or overvoltage condition present.
•
Set Condition:
1. Current reading greater than 1A for 200 msec with no motor activation.
2. Current reading never greater than 1A during a completed range or neutral shift.
Possible Causes
INTERMITTENT TRANSFER CASE MOTOR CURRENT PERFORMANCE
TRANSFER CASE MOTOR
FINAL DRIVE CONTROL MODULE
Diagnostic Test
1.
DTC IS ACTIVE
Ignition on, engine not running.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Go to 2
No
>> Go to 4
2.
TRANSFER CASE MOTOR
Turn the ignition off.
Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.
If any problems are found, repair as necessary and retest.
If no other problems are found, replace the Transfer Case Motor in accordance with the Service Information.
Ignition on, engine not running.
Cycle the Transfer Case Selector Switch to each position several times during a test drive.
With the scan tool, select View DTCs.
Is the DTC status Active?
Yes
>> Go to 3
No
>> Test complete.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
3.
FINAL DRIVE CONTROL MODULE
Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.
Were any problems found?
Yes
>> Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
No
>> Replace the Final Drive Control Module in accordance with the Service Information.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1.
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TRANSFER CASE - ELECTRICAL DIAGNOSTICS
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