RM3660EC _57 Power Source / Network _080743 NETWORKING _0600578 LIN COMMUNICATION SYSTEM(except NR Series Engine) C

NETWORKING  LIN COMMUNICATION SYSTEM(except NR Series Engine)  B278C87  Power Source Control System Missing Message  


DESCRIPTION

When an internal malfunction is detected in the certification ECU (smart key ECU assembly), this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
B278C87 Power Source Control System Missing Message An internal malfunction occurs in the certification ECU (smart key ECU assembly). Certification ECU (smart key ECU assembly) Entry&Start

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.


PROCEDURE

1.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Entry&Start > Clear DTCs
50002 440

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Entry&Start > Trouble Codes
50001 440
OK:

DTC B278C87 is not output.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)