1

1. Connect a scan tool to the data link connector (DLC).
2. Turn the ignition switch to the RUN position.
3. Use a scan tool in order to communicate with the inflatable restraint sensing and diagnostic module (SDM), the EBCM (if equipped) and the PCM.

Communication is established between the scan tool and the modules.

Scan Tool Does Not Communicate with UART Data Line

2

Use a scan tool in order to communicate with the Powertrain Control Module PCM Class II serial data line.

Communication is established between the scan tool and the PCM.

Scan Tool Does Not Communicate with Class 2 Data Line

3

Use a scan tool in order to communicate with the theft deterrent module (SEO equipped vehicles only).

Communication is established between the scan tool and the theft deterrent module.

Scan Tool Does Not Communicate with Theft Deterrent Module

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