1

1. Connect a scan tool to the data link connector (DLC).
2. Set the ignition switch to RUN.
3. Attempt to establish communication with the class 2 serial data line.

The scan tool communicates with the Class 2 serial data line.

Scan Tool Does Not Communicate with Class 2 Data Line

2

Attempt to establish communication with the E and C serial data line.

The scan tool communicates with the E and C serial data line.

Scan Tool Does Not Communicate with E and C Data Line

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.