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 () or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not Communicating () or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS) () .
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 |
| Driver's door control unit |
| Automatic lighting control unit-sensor |
| Power seat control unit |
| Relay control module |
| Front seat heater control unit |
| Ventilated seat control unit |
| Second row seat heater control unit |
| Audio unit |
| Wireless charger |
| Telematics control unit |
| Left side BSI radar unit |
| Right side BSI radar unit |
| Multi view camera unit |
| Head up display |
| Left front lighting control unit |
| Right front lighting control unit |
| Power tailgate control unit |