A Symptoms - Data Link Communications

IMPORTANT: Review the system description and operation in order to familiarize yourself with the system functions. Refer to Data Link Connector Description and Operation.

Visual/Physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Data Link Connector system. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Electrical Intermittents in Diagrams.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Scan Tool Does Not Power Up
^ Scan Tool Does Not Communicate with Class 2 Device