Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
NOTE:
Diagnose and repair any system voltage or Transfer Case related DTCs in the DTCM before continuing with this test.
1. Ignition on, engine running.
2. With the scan tool, clear stored DTCs in the DTCM.
3. Test drive the vehicle.
4. During the test drive, move the Transfer Case Selector Switch (if equipped) to each position several times in accordance with the Service Information.
5. With the scan tool, read DTCs in the DTCM.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2.
  No
  - Go To 6.
(K504) DRIVETRAIN 5-VOLT SUPPLY CIRCUIT HIGH RESISTANCE

Fig 1: Checking Drivetrain 5-Volt Supply Circuit For Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position
2. Disconnect the DTCM C1 harness connector.
3. Disconnect the Transfer Case Shift Motor/Mode Sensor Assembly harness connector.
4. Measure the resistance of the (K504) Drivetrain 5-volt Supply circuit between the Transfer Case Shift Motor/Mode Sensor Assembly harness connector and the DTCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the high resistance in the (K504) Drivetrain 5-volt Supply circuit.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
  No
  - Go To 3.
(T313) MODE SENSOR SIGNAL CIRCUIT HIGH RESISTANCE

Fig 2: Checking Mode Sensor Signal Circuit For Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position.
2. Measure the resistance of the (T313) Mode Sensor Signal circuit between the Transfer Case Shift Motor/Mode Sensor Assembly harness connector and the DTCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the high resistance in the (T313) Mode Sensor Signal circuit.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
  No
  - Go To 4.
(K594) DRIVETRAIN SENSOR RETURN CIRCUIT HIGH RESISTANCE

Fig 3: Checking Drivetrain Sensor Return Circuit High Resistance
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K594) Drivetrain Sensor Return circuit between the Transfer Case Shift Motor/Mode Sensor Assembly harness connector and the DTCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the high resistance in the (K594) Drivetrain Sensor Return circuit.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
  No
  - Go To 5.
TRANSFER CLUTCH WORN
1. Ignition on, engine not running.
2. Shift the Transfer case into 4-LOW (if equipped).
3. With the scan tool, monitor the encoder voltage in the DTCM.
4. Shift the Transfer case into AWD (if equipped).
  Is the encoder voltage between 4.625 and 4.750 volts?
  
  Yes
  - Replace the worn clutch pack assembly in accordance with the Service Information.
  - Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
  No
  - Replace the Drive Train Control Module (DTCM) in accordance with the Service Information.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .
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 TRANSFER CASE VERIFICATION TEST .
  No
  - Test complete.