Troubleshooting - B-CAN System Diagnosis Test Mode B

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.

Do this diagnosis if any of the control units are not communicating (Not Available is displayed in the HDS) as found by the B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Using the HDS, select the system that has the symptom from the BODY ELECTRICAL menu.
Select DTCs, and then check for loss of communication DTCs.
Are any loss of communication DTCs indicated?

YES - Go to step 3.

NO - Replace the MICU (see appropriate REMOVAL AND INSTALLATION procedure ).

Do the power, ground, and communication part of the input test for the unit not communicating with the HDS.

UNIT NOT COMMUNICATING REFERENCE TABLE

Unit not communicating
MICU (see MICU INPUT TEST )
Gauge control module (see GAUGE CONTROL MODULE INPUT TEST )
Immobilizer-keyless control unit (see IMMOBILIZER-KEYLESS CONTROL UNIT INPUT TEST )
HandsFreeLink control unit