Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not Communicating

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 - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .

1. Using the HDS, select the system that has the symptom from the BODY ELECTRICAL SYSTEM SELECT menu.
2. Select DTCs, and then check for loss of communication DTCs.
   • If any loss of communication DTCs are indicated, go to step 3.
   • If any loss of communication DTCs are not indicated, replace the body control module .
3. Do the power, ground, and communication part of the input test for the unit (s) not communicating with the HDS.

   Unit not communicating
   Body control module
   Gauge control module
   Climate control unit
   Power window master switch
   Automatic lighting control unit-sensor
   Power seat control unit
   Power tailgate control unit
   Power distribution module
   Parking and back-up sensor control unit
   Front seat heater control unit
   Ventilated seat control unit
   Audio unit
   Telematics control unit
   Left side BSI radar unit
   Right side BSI radar unit
   Multipurpose camera unit
   Head up display
   Adaptive front lighting control unit
   Master lighting control unit
   Wireless charger