Connecting and using the AutoTap diagnostic scan tool can seem daunting, but it’s a user-friendly process. This guide provides a step-by-step approach to using the AutoTap OBD II for Windows software and hardware, focusing on retrieving Diagnostic Trouble Codes (DTCs) to diagnose vehicle issues.
Connecting the AutoTap Scanner
The AutoTap scanner hardware is clearly marked with “Vehicle” and “Computer” connections. Connect the OBD II cable to the “Vehicle” side of the scanner and the serial cable to the “Computer” side. The other end of the serial cable connects to your laptop’s DB9 serial port. If your laptop lacks a DB9 port, AutoTap offers USB adapters. Serial extension cables are also available. Finally, connect the OBD II cable to the vehicle’s Data Link Connector (DLC). The red LED on the AutoTap hardware should illuminate, confirming a successful connection and power from the vehicle.
Launching the AutoTap Software and Initial Diagnosis
After connecting the hardware, launch the AutoTap software on your laptop. Click the “Connect to a Vehicle” button. You might encounter connection issues if other programs are using the serial port, such as Palm HotSync Manager. Ensure the port is available for AutoTap to function correctly. In this case, exiting the conflicting program resolved the issue.
Once connected, the software displays the vehicle’s VIN, connection status, and MIL (Malfunction Indicator Lamp) status. This example focuses on retrieving stored DTCs that triggered the MIL. The AutoTap software quickly displayed the DTC chart, indicating a high IAT (Intake Air Temperature) sensor circuit, suggesting an open circuit. This entire process, from connection to diagnosis, took approximately 10 minutes.
Inspecting the Vehicle and Utilizing Advanced Features
Based on the DTC, a visual inspection under the hood revealed a disconnected IAC (Idle Air Control) sensor harness. Reconnecting the harness resolved the issue.
Beyond basic DTC retrieval, AutoTap offers advanced features. The “Advanced” function allows enabling or disabling DTC checking and MIL status updates, and setting the checking interval. This provides real-time monitoring and diagnostic capabilities.
Conclusion
The AutoTap diagnostic scan tool provides a straightforward method for retrieving DTCs and diagnosing vehicle problems. Its user-friendly interface and advanced features, such as customizable DTC and MIL monitoring, make it a valuable tool for both beginners and experienced users. This guide demonstrated how quickly a problem was diagnosed and resolved using the AutoTap system, highlighting the efficiency and ease of use of this powerful diagnostic tool.
