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:
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PROCEDURE
1. | CLEAR DTC |
(a) Clear the DTCs.
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|
2. | CHECK FOR DTC |
(a) Check for DTCs.
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OK:
DTC B278C is not output.
OK | ![]() | USE SIMULATION METHOD TO CHECK |
NG | ![]() | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
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