Troubleshooting - B-CAN System Diagnosis Test Mode B

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  ).

1. Using the HDS, select the system that has the symptom from the BODY ELECTRICAL menu.
2. Select DTCs, and then check for loss of communication DTCs.

   Are any loss of communication DTCs indicated? 

   YES  -Go to step  3.

   NO  -Faulty MICU; replace the under-dash fuse/relay box.

   • USA models (see REMOVAL AND INSTALLATION )
   • Canada models (see CANADA MODELS )
3. Do the power, ground, and communication part of the input test for the unit(s) not communicating with the HDS.
   INPUT TEST REFERENCE
   
   

   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 )
   Climate control unit (see CLIMATE CONTROL UNIT INPUTS AND OUTPUTS )
   HandsFreeLink control unit(1) (see CONTROL UNIT INPUT TEST/REPLACEMENT )
   (1) With HandsFreeLink system