Diagnostic Aids
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- These DTCs cannot be retrieved with a current status. Diagnosis of the current DTC is accomplished via the symptom, Scan Tool Does Not Communicate with a Class 2 Device. Refer to Scan Tool Does Not Communicate with Class 2 Device (4.2L w/o Immobilizer) or Scan Tool Does Not Communicate with Class 2 Device (4.2L w/Immobilizer) or Scan Tool Does Not Communicate with Class 2 Device (5.3L) .
- An intermittent condition is likely to be caused by a short on the class 2 serial data circuit. Use the Scan Tool Does Not Communicate with a Class 2 Device procedure in order to isolate an intermittent condition. Refer to Scan Tool Does Not Communicate with Class 2 Device (4.2L w/o Immobilizer) or Scan Tool Does Not Communicate with Class 2 Device (4.2L w/Immobilizer) or Scan Tool Does Not Communicate with Class 2 Device (5.3L) .