Scan Tool Set-Up And Functionality: Notes

Connect the scan tool to the data link connector (DLC) for communication with the vehicle.

The DLC is located in the driver side compartment. It is attached to the lower instrument panel under the steering column and is accessible from the driver seat.

The 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 make sure the test equipment connector remains mated when correctly connected.

The required scan tool functions are listed below:

• monitor, record, and playback of parameter identification (PIDs)
• freeze frame PID data
• diagnostic test modes; self-test, clear diagnostic trouble codes (DTCs)
• output state control
• resetting keep alive memory (KAM)
• diagnostic monitoring test results for on-board diagnostic (OBD) on-board monitors
• on board system readiness (OBD monitor completion status)

Some of these functions are described in this article. Refer to the scan tool manufacturer's manual for specific information on scan tool set-up and operation.