Diagnostic Tool Hookup

SCAN TOOL
1. Key off.
2. Verify that the proper memory (EPROM) card is inserted in the scan tool.
3. Connect the On-Board Diagnostics (OBD) II Data Link Connector (DLC) cable to the scan tool.
4. Connect the OBD II DLC cable securely into the OBD II DLC.
5. Connect the scan tool power supply cable to the vehicle.
6. Turn the key to ON or start the vehicle if necessary. The scan tool is ready to communicate with vehicle modules.
7. Follow instructions on the scan tool screen display or in the diagnostic procedures.
8. To disconnect the tool, turn the key to OFF and disconnect the scan tool from the DLC and power supply. Refer to the manufacturer's manual for specific cables and/or adapters necessary for scan tool hookup.

OBD II DATA LINK CONNECTOR

Connector View From Vehicle Side:

The OBD II DLC is located in the passenger compartment. It is attached to the instrument panel and accessible from the driver seat.

The OBD II DLC is rectangular in design and capable of accommodating up to 16 terminals. The connector has keying features to allow easy connection. The vehicle connector and the test equipment connector have latching features that ensure the test equipment connector will remain mated when properly connected.

COMMUNICATION ERROR
It is possible to get a communication error from a scan tool when initiating a diagnostic test or accessing Parameter Identification (PIDs). The communication error could be caused by operator error, the vehicle wiring, connectors, the Powertrain Control Module (PCM), or other control modules connected to the OBD II DLC wiring. The PCM will respond to a scan tool whenever the tool requests a test. If manually entering the message strings using some scan tools, the numeric codes will be at the end of the string of characters. These are not Diagnostic Trouble Codes (DTCs).