Diagnostic Test

WARNING: This page is about a different car, the 2015 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCM DTCs and record on work order.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Go To 6
(G304) FRONT AXLE LOCK CONTROL CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the DTCM harness connector.
3. Disconnect the FAD Module harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (G304) Front Axle Lock Control circuit.
  Is any there voltage present?
  
  Yes
  - Repair the short to voltage in the (G304) Front Axle Lock Control circuit.
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
FRONT AXLE DISCONNECT (FAD) MODULE SHORTED TO VOLTAGE
1. Turn the ignition off.
2. Connect the FAD Module harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (G304) Front Axle Lock Control circuit at the DTCM harness connector.
  Is any there voltage present?
  
  Yes
  - Go To 5
  No
  - Go To 4
DRIVE TRAIN CONTROL MODULE (DTCM)
1. 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 DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Drive Train Control Module (DTCM) in accordance with Service Information. Refer to MODULE, DRIVETRAIN CONTROL, REMOVAL .
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
FRONT AXLE DISCONNECT (FAD) MODULE
1. 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 DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Front Axle Disconnect (FAD) Module in accordance with the Service Information.
  - 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 schematics as a guide, inspect the wiring harness and connectors specific to this circuit.
3. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
4. With the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test Complete.