Diagnostic Test

T-CASE POSITION SENSOR VOLTAGE ABOVE 4.8 VOLTS
NOTE:
If DTCs C1403-12 and C2110-12 are both present, perform the diagnostics procedure for C2110-1212 before continuing with this test procedure.
1. Ignition on, engine not running.
2. With the scan tool, read the T-Case Position Sensor voltage in the DTCM.
  Is the voltage above 4.8 volts?
  
  Yes
  - Go To 2
  No
  - Go To 6
(K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE

Fig 1: Checking Drivetrain 5-Volt Supply Circuit For A Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off to the lock position
2. Disconnect the Transfer Case Motor C2 harness connector.
3. Ignition on, engine not running.
4. Measure the voltage of the (K504) Drivetrain 5-volt Supply circuit at the Transfer Case Motor C2 harness connector.
  Is the voltage above 5.5 volts?
  
  Yes
  - Repair the (K504) Drivetrain 5-volt Supply circuit for a short to voltage.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE

Fig 2: Checking Mode Sensor Signal Circuit For A Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Measure the voltage of the (T313) Mode Sensor Signal circuit at the Transfer Case Motor C2 harness connector.
  Is the voltage above 5.5 volts?
  
  Yes
  - Repair the (T313) Mode Sensor Signal circuit for a short to voltage.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
(K594) DRIVETRAIN SENSOR RETURN CIRCUIT OPEN

Fig 3: Checking Drivetrain Sensor Return Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Motor C2 harness connector and the DTCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (K594) Drivetrain Sensor Return circuit for an open.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  
  Go To 5
TRANSFER CASE MOTOR/ENCODER
1. Turn the ignition off to the lock position
2. Connect a jumper wire between the (K594) Drivetrain Sensor Return circuit and the (T313) Mode Sensor Signal circuit in the Transfer Case Motor C2 harness connector.
3. Ignition on, engine not running.
4. With the scan tool, read the T-Case Position Sensor voltage in the DTCM.
  NOTE:
  Remove the jumper wire before continuing.
  
  Is the voltage below 0.2 of a volt?
  
  Yes
  - Replace the Transfer Case Sensor in accordance with the Service Information. Refer to SENSOR, MODE, REMOVAL .
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to MODULE, DRIVETRAIN CONTROL, REMOVAL .
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
INTERMITTENT WIRING HARNESS AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
3. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
4. Look for the data to change or for the DTC to reset during the wiggle test.
5. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times.
6. Look for the data to change other than as expected or for the DTC to reset.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.