Checking Other Diagnostic Trouble Codes (DTCS)

In the event of communication problems, the fault may exist in other parts of the communications network.

The role of the central electronic module is to generally control the communications network and to store diagnostic trouble codes (DTCs) in the event of communication problems between control modules.

If there are diagnostic trouble codes (DTCs) stored for communication problems in the central electronic module, stop the fault tracing and fault trace the central electronic module.

Were diagnostic trouble codes (DTCs) for communication problems stored in the central electronic module? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  see CHECKING DIAGNOSTIC TROUBLE CODES (DTCS) IN THE ENGINE CONTROL MODULE (ECM)