Using the HDS (Preferred method)
WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
Connect the HDS to the Data Link Connector (DLC).
NOTE:
There are two methods to read B-CAN codes with the HDS.
First method: Go to B-CAN System Diagnosis Test Mode A to check for DTCs (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
Second method: Ground the SCS circuit with the HDS, then read the DTCs displayed in the gauge control module, then go to B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).