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Symptoms - Mobile Communication

Note: The following steps must be completed before using the symptom tables.

  1. Perform the Diagnostic System Check - Vehicle .
    2. • There are no DTCs set.
    • The control modules can communicate via the serial data link.
  2. Review the system description and operation in order to familiarize yourself with the system functions. Refer to Cellular Telephone Description and Operation .

Visual/Physical Inspection
    • Inspect for aftermarket devices which may affect the operation of the mobile telephone control module. Refer to Checking Aftermarket Accessories .
    • Inspect the easily accessible or visible system components, for obvious damage or conditions, which may cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

    •  Cellular Telephone Conversation Partner Does Not Hear You
    •  Cellular Telephone Conversation Partner Cannot Be Heard
    •  Cellular Telephone Charging Malfunction
   


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