Scan Tool Setup And Functionality: Notes
Connect the scan tool to the data link connector (DLC) for communication with the vehicle.
The DLC is located on the driver side of the vehicle under the steering column. It is attached to the instrument panel and accessible from the driver seat.
The DLC is rectangular in design and capable of accommodating up to 16 pins. The connector has keying features to allow easy connection.
The required scan tool functions are described below:
- monitor, record, and playback of parameter identification (PID)
- freeze frame PID data
- diagnostic test modes; self-test, clear diagnostic trouble codes (DTCs)
- output state control (OSC)
- resetting keep alive memory (KAM)
- diagnostic monitoring test results (mode 6) for on board diagnostic (OBD) 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 instruction manual for specific information on scan tool setup and operation.