NETWORKING LIN COMMUNICATION SYSTEM B278C Lost Communication with Power Source Control
DESCRIPTION
This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and power management control ECU stops for 10 seconds or more.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B278C | Lost Communication with Power Source Control | An internal malfunction occurs in the certification ECU (smart key ECU assembly). | Certification ECU (smart key ECU assembly) |
- HINT:
-
The power management control ECU is built into the certification ECU (smart key ECU assembly).
CAUTION / NOTICE / HINT
- NOTICE:
- ·
If the certification ECU (smart key ECU assembly) is replaced, register the keys (refer to Service Bulletin).
·When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
PROCEDURE
Clear the DTCs.
Click herePower Source / Network>NETWORKING>LIN COMMUNICATION SYSTEM>DTC CHECK / CLEAR
- Body Electrical > Entry&Start > Clear DTCs
- 50002 125
- Result:
Proceed to NEXT
NEXT
Check for DTCs.
Click herePower Source / Network>NETWORKING>LIN COMMUNICATION SYSTEM>DTC CHECK / CLEAR
- Body Electrical > Entry&Start > Trouble Codes
- 50001 125
- OK:
DTC B278C is not output.
- Result:
Proceed to OK NG
OK
Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING
NG