SYSTEM DIAGRAM

System Description
Problem Symptoms TableLost Communication with Power Source Control (B278C)
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
B278C
An internal malfunction occurs in the certification ECU (smart key ECU
assembly)
Certification ECU (smart key ECU assembly)
CAUTI ...
Data List / Active Test
DATA LIST / ACTIVE TEST
READ DATA LIST
NOTICE:
In the table below, the values listed under "Normal Condition" are reference
values. Do not depend solely on these reference values when deciding whether a part
is faulty or not.
HINT:
Using the Techstream to read the Data List allows ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT MAGNET CLUTCH ASSEMBLY
(a) Inspect the magnet clutch assembly.
Text in Illustration
*a
Component without harness connected
(Magnet Clutch Assembly)
...