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) |
Rear Door LH ECU Communication Stop (B2324)
Front Passenger Side Door ECU Communication Stop (B2322)Toyota CH-R Service Manual > Blind Spot Monitor System: Parts Location
PARTS LOCATION
ILLUSTRATION
*1
OUTER REAR VIEW MIRROR ASSEMBLY LH
*2
OUTER REAR VIEW MIRROR ASSEMBLY RH
*3
BRAKE ACTUATOR ASSEMBLY
- SKID CONTROL ECU
*4
ECM
ILLUSTRATION
*1
...
Toyota CH-R Service Manual > Audio And Visual System(for Radio Receiver Type): Precaution
PRECAUTION
IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs depending on the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch
(Position)
Engine ...