Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
NOTE:
Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
1. Turn the ignition on.
  NOTE:
  Make sure the battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, read the module status.
  NOTE:
  Check the BCM for any active CAN hardware DTCs, perform DTC before proceeding.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 2
CHECK PCM POWER AND GROUND
1. Check the PCM power and ground circuits. and perform the Checking the PCM Power and Ground Circuits diagnostic procedure.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to the appropriate Testing & Diagnostics article in Engine Performance .
  No
  - Go To 3
CHECK THE (D27) AND (D28) CAN C BUS CIRCUITS FOR AN OPEN

Fig 1: Checking CAN C BUS Circuits For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Front CAN C Star Connector C9 harness connector.
3. Measure the resistance of the (D27) CAN C Bus (+) circuit between the Front CAN C Star Connector C9 harness connector and the PCM C1 harness connector.
4. Measure the resistance of the (D28) CAN C Bus (-) circuit between the Front CAN C Star Connector C9 harness connector and the PCM C1 harness connector.
  Are the resistances below 5.0 Ohms?
  
  Yes
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to the appropriate Testing & Diagnostics article in Engine Performance .
  No
  - Repair the open in the (D27) or (D28) CAN C Bus circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to the appropriate Testing & Diagnostics article in Engine Performance .