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Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS STORED 
    NOTE: Stored faults may indicate a customer perceived intermittent condition.
    NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
    1. Using the scan tool, read stored DTCs.

      Is this DTC stored?

      Yes 

      • Go to step  2

      No 

      • Diagnose and repair the active DTCs found.
  2. CHECK THE ENVIRONMENTAL DATA 
    1. Using the scan tool, read the loss of communication environmental data.

      Does the loss of communication environmental odometer data match up to any of the previous service procedures listed in the possible causes or are there any stored CAN B or C hardware electrical, battery, ignition voltage, VIN missing/mismatch, TIPM configuration DTCs present with match environmental data?

      Yes 

      No 

      • Go to step  3
  3. VERIFY INTERMITTENT LOST COMMUNICATION DTC - WIRING CONCERNS 
    1. Turn the ignition on.
    2. Using the scan tool, select Network View and select Advanced.

      Is there more than one ECU with stored DTCs "Logged Against" the module and one or more lost communication DTCs stored in the offending module?

      Yes 

      • Verify if the vehicle was recently in for this type of service. Otherwise, visually inspect the related wiring harness for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals. Repair as necessary.
      • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .

      No 

      • Go to step  4
  4. VERIFY INTERMITTENT LOST COMMUNICATION DTC - OFFENDING MODULE 
    1. Turn the ignition on.
    2. Using the scan tool, select Network View and select Advanced.

      Is there more than one ECU with stored DTCs "Logged Against" the module and NO lost communication DTCs stored in the offending module?

      Yes 

      • Check for Technical Service Bulletins (TSBs) related to this offending module.

      No 

      • Go to step  5
  5. VERIFY INTERMITTENT LOST COMMUNICATION DTC - REPORTING MODULE 
    1. Turn the ignition on.
    2. Using the scan tool, select Network View and select Advanced.

      Is there ONLY ONE ECU with stored DTCs "Logged Against" the module?

      Yes 

      • Check for TSB related to the module that set this DTC.

      No 

      • Verify if the vehicle was recently in for this type of service. Otherwise, visually inspect the related wiring harness for chafed, pierced, pinched and partially broken wires and the wiring harness connectors for broken, bent, pushed out and corroded terminals. Repair as necessary.
      • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
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