1

1. Turn the ignition switch to the OFF position.
2. Connect the scan tool to the Data Link Connector (DLC).
3. Turn on the scan tool.

The scan tool turns on.

Scan tool inop. Refer to Scan Tool Inoperative .

2

1. Turn the ignition switch to the RUN position.
2. Use a scan tool in order to communicate with the UART serial data line, inflatable restraint sensing and diagnostic module (SDM), the driver information display (DID), the electronic brake control module (EBCM) (if equipped) and the Powertrain Control Module (PCM).

Communication is established between the scan tool and the UART serial data line modules.

Scan tool inop with UART serial data line. Refer to Scan Tool Does Not Communicate with UART Data Line .

3

Use a scan tool in order to communicate with the Class 2 serial data line: PCM, pass key III module.

Communication is established between the scan tool and the class 2 serial data line modules.

Scan tool inop with class 2 serial data line. Refer to Scan Tool Does Not Communicate with Class 2 Data Line .

4

Use a scan tool in order to communicate with the E+C serial data line: radio.

Communication is established between the scan tool and the E+C serial data line module.

Scan tool inop with E+C serial data line. Refer to Scan Tool Does Not Communicate with E and C Data Line .

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