Diagnostic Test
- ACTIVE DTC NOTE:
For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.
- Turn the ignition on.
- With a scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
- Refer to DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the diagnostic procedure.