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Enhanced Diagnostics in OBD Fusion®

Last Updated: Nov 08, 2018 12:00PM EST
OBD Fusion has support for enhanced diagnostics for Ford, Lincoln, Mercury, Mazda, Lexus, Toyota, Scion, Nissan, and Infiniti vehicles. Enhanced diagnostics provides access to many additional modules and parameters that are not available over standard OBD2. Some common examples include being able to read and clear ABS codes and reading transmission temperature. This article describes how to determine whether enhanced diagnostics are available for your vehicle, how to purchase enhanced diagnostics, and how to access the enhanced diagnostic features.

Determining whether enhanced diagnostics are available

Before purchasing enhanced diagnostics for your vehicle, you should check whether your specific vehicle is supported by the enhanced diagnostic packages.
  1. Connect to your vehicle by following the instructions on the Settings > Connection Help page.
  2. Open the vehicle editor on the Settings > Vehicle Editor page.
  3. Use the Select buttons to enter the full year, make, model, and option for your vehicle. You must use the Select buttons to enter this information. If your year, make, model, or option is not listed, you can manually enter it, but enhanced diagnostics will not be available for your vehicle.

  4. Open the Settings > Purchase Extras page and wait for the app to load the list of extra items.
  5. Select the category corresponding to the make of your vehicle (e.g. Ford, Lincoln, Mercury).
  6. Find and select the package corresponding to your vehicle year, such as Ford 2003 Enhanced Diagnostics. If you have vehicle(s) supported by this add-on, you will see a list of the vehicles at the bottom of the page. If you do not have any vehicles supported by this add-on, you will see a message indicating that you do not have any vehicles supported by this add-on.

 

Using enhanced diagnostics

Once you have purchased and downloaded an enhanced diagnostic package for your vehicle, you are ready to connect to your vehicle and access the enhanced information. Follow the steps below to connect to your vehicle and access enhanced diagnostic information.

Enhanced diagnostics are meant for diagnostic purposes only. You should not connect to your vehicle or initiate diagnostic functions while the vehicle is in motion. 
  1. Open Settings > Vehicle Editor and select the vehicle that you want to connect to by pressing Menu > Select Vehicle.
  2. On the OBD Fusion main page, press the Connect button.
  3. You will be prompted to select an enhanced diagnostic network. Select the network that contains the module that you want to diagnose and press the Connect button. If you are not prompted for an enhanced network, make sure you fully selected the year, make, model, and option of your vehicle in the vehicle editor using the Select buttons. 

  4. When you first connect to an enhanced network, OBD Fusion will scan your vehicle for supported enhanced PIDs. Please be patient and let the scan complete. The supported enhanced PIDs will be saved so that you do not have to scan this enhanced network the next time you connect.
  5. Once the scan completes, you are ready to configure enhanced PIDs and read enhanced trouble codes, as explained in the following sections.
 

​Configuring enhanced PIDs

You configure enhanced PIDs in a similar way to configuring standard SAE PIDs. When configuring a PID for a dashboard gauge, graph, PID value, etc., look for the category corresponding to the make of your vehicle, and select the category.



You will see a list of enhanced modules for your vehicle, and you can select the module to see the list of PIDs supported by that module. Note that if you are connected when configuring PIDs, you will only see the connected network. You can configure PIDs when not connected, in which case you will see all available networks for the active vehicle.



The screenshot below shows selecting the "Cylinder Head Temperature" PID from the Powertrain Control Module.


 

Reading enhanced trouble codes

When connected to an enhanced network, open the Diagnostics > Trouble Codes page. If this is the first time you opened this page since opening the app, OBD Fusion will automatically read trouble codes. Otherwise, press Menu > Refresh to read codes. You will be prompted to select the modules on which to read codes. Once you have selected the modules to read, press the Continue button. 

Clearing enhanced trouble codes

You should only clear codes with the ignition ON and the engine OFF. You should never try to clear codes with the engine running.

When connected to an enhanced network, open the Diagnostics > Trouble Codes page, then press Menu > Clear Trouble Codes. You will be prompted to select the modules on which to clear codes. Once you have selected the modules to clear, press the Continue button. After clearing codes, OBD Fusion will automatically read codes, and you will be prompted again to select the modules to read as described in the Reading enhanced trouble codes section.

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