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 ).
- Using the HDS, select the system that has the symptom from the BODY ELECTRICAL SYSTEM SELECT menu.
- Select the DTCs, and then check for loss of communication DTCs. Refer to LOSS OF COMMUNICATION DTC CROSS REFERENCE CHART .
Are any loss of communication DTCs indicated?
YES -Go to step 3.
NO -Replace the MICU.
- Do the power, ground, and communication part of the input test for the unit not communicating with the HDS.
| Unit not communicating | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MICU (see MICU ) | ||||||||||||||
| Gauge control module (see GAUGE CONTROL MODULE INPUT TEST ) | ||||||||||||||
| Automatic lighting control unit(1) (see AUTOMATIC LIGHTING CONTROL UNIT INPUT TEST/REPLACEMENT ) | ||||||||||||||
| Door multiplex control unit (see POWER WINDOW MASTER SWITCH INPUT TEST ) | ||||||||||||||
| Immobilizer-keyless control unit (see IMMOBILIZER-KEYLESS CONTROL UNIT INPUT TEST ) | ||||||||||||||
| Power seat control unit(2) (see POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT ) | ||||||||||||||
| Parking and back-up sensor control unit(3) (see PARKING AND BACK-UP SENSOR CONTROL UNIT INPUT TEST/REPLACEMENT ) | ||||||||||||||
| Power tailgate control unit(4) (see CONTROL UNIT INPUT TEST/REPLACEMENT ) | ||||||||||||||
| Seat heater control unit(5) (see SEAT HEATER CONTROL UNIT INPUT TEST/REPLACEMENT ) | ||||||||||||||
| Climate control unit(6) (see CLIMATE CONTROL UNIT POWER, GROUND, AND COMMUNICATION CIRCUIT TROUBLESHOOTING ) | ||||||||||||||
| HVAC control unit(7) (see HVAC CONTROL POWER, GROUND, AND COMMUNICATION CIRCUIT TROUBLESHOOTING ) | ||||||||||||||
|