Troubleshooting - B-CAN System Diagnosis Test Mode B

Perform 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 SYSTEM SELECTION MENU.
2. Select DTCs, and then check for loss of communication DTCs (use the DTC Troubleshooting Index to find the DTC type) (see LOSS OF COMMUNICATION DTC CROSS-REFERENCE CHART  ).

   Are any loss of communication DTCs indicated? 

   1. YES  - Go to step 3.
   2. NO  - Replace the MICU.
3. Perform the input test for the unit not communicating with the HDS.
   NOTE: Troubleshoot MICU-rear junction box loss of communication DTCs before troubleshooting the left/right power sliding door control unit, the power tailgate control unit, and the power seat control unit DTCs.
   UNIT NOT COMMUNICATING
   
   

   Unit not communicating
   MICU (see MULTIPLEX INTEGRATED CONTROL UNIT INPUT TEST  )
   Door multiplex control unit (see DOOR MULTIPLEX CONTROL UNIT INPUT TEST  )
   Gauge control module (see GAUGE CONTROL MODULE INPUT TEST  )
   Relay control module (see RELAY CONTROL MODULE INPUT TEST  )
   Combination switch control unit (see COMBINATION SWITCH CONTROL UNIT INPUT TEST  )
   Power seat control unit (see POWER SEAT CONTROL UNIT INPUT TEST )
   MICU-rear junction box (see MICU - REAR JUNCTION BOX INPUT TEST  )
   Power tailgate control unit (see CONTROL UNIT INPUT TEST )
   Left power sliding door control unit (see CONTROL UNIT INPUT TEST )
   Right power sliding door control unit (see CONTROL UNIT INPUT TEST )
   A/C control panel (see SYSTEM DESCRIPTION ) Climate control unit (see SYSTEM DESCRIPTION )
   Automatic lighting control unit (see AUTOMATIC LIGHTING CONTROL UNIT INPUT TEST )