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:
Click here
PROCEDURE
1. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
|
2. |
CHECK FOR DTC |
(a) Check for DTCs.
Click here
OK:
DTC B278C is not output.
OK | ![]() |
USE SIMULATION METHOD TO CHECK
|
NG | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Toyota CH-R Service Manual > Front Seat Inner Belt Assembly: Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration)
that must be performed after parts are removed and installed, or replaced during
the front seat inner belt assembly removal/installation are shown below.
Necessary Procedure Aft ...
Toyota CH-R Service Manual > Key Reminder Warning System: Key Reminder Buzzer does not Sound
DESCRIPTION
The key reminder warning buzzer sounds when the driver door is opened while the
ignition switch is off or ACC. The key reminder warning buzzer is activated when
the main body ECU (multiplex network body ECU) sends an unlock warning switch signal
and driver door courtesy light swit ...