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 > Safety Connect System: Airbag Signal Malfunction/Not Input (B15C4)
DESCRIPTION
If the DCM (Telematics Transceiver) detects an error in communication between
the DCM (Telematics Transceiver) and the airbag sensor assembly as a result of the
DCM (Telematics Transceiver) self check, this DTC will be set.
DTC No.
Detection Item
DT ...
Toyota CH-R Service Manual > Steering Lock System: Unable to Unlock Steering Wheel (Engine cannot Start)
DESCRIPTION
The steering lock actuator or upper bracket assembly activates the steering lock
motor and moves the lock bar into the steering column to lock the steering.
The steering may not unlock when the lock bar gets stuck in the lock hole of
the steering column. In this case, if the engine ...