The diagnostic scan tool becomes part of the vehicle's electronic system when plugged into the Data Link Connector (DLC). The scan tool can perform the following functions:
| • | Display the MAGNASTEER® data | 
| • | Display and clear any MAGNASTEER® diagnostic trouble codes | 
| • | Control the MAGNASTEER® components | 
| • | Perform extensive MAGNASTEER® diagnosis | 
| • | Provide diagnostic testing for intermittent MAGNASTEER® conditions | 
Each test mode has specific diagnostic capabilities which depend upon various keystrokes. The keys on the scan tool completes the following functions:
| • | Select operating modes. | 
| • | Perform functions within an operating mode. | 
| • | Enter Diagnostic Trouble Code (DTC) or model year designations. | 
For more scan tool diagnostics, refer to the scan tool owners manual.