Toyota Yaris: Lin Communication System / Power Source Control System Missing Message (B278C87)
DESCRIPTION
When an internal malfunction is detected in the certification ECU (smart key ECU assembly), this DTC is stored.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
B278C87 | Power Source Control System Missing Message | An internal malfunction occurs in the certification ECU (smart key ECU assembly). | Certification ECU (smart key ECU assembly) |
CAUTION / NOTICE / HINT
NOTICE:
-
When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry & Start (CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
-
Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Smart Key > Clear DTCs
NEXT |
| |
(a) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
Result | Proceed to |
DTC 278588 is output | A |
DTC 278588 is not output | B |
A |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
B |
| USE SIMULATION METHOD TO CHECK |
DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) stops for 10 seconds or more...
Other information:
ComponentsCOMPONENTS ILLUSTRATION
*1 CENTER LOWER INSTRUMENT COVER *2 LOWER INSTRUMENT PANEL FINISH PANEL *3 SWITCH HOLE BASE SUB-ASSEMBLY *4 SHIFT LEVER KNOB SUB-ASSEMBLY *5 NO. 1 POWER OUTLET SOCKET ASSEMBLY *6 NO. 1 POWER OUTLET SOCKET COVER *7 CONSOLE BOX ASSEMBLY - - RemovalREMOVAL PROCEDURE 1...
ADJUSTMENT CAUTION / NOTICE / HINT
*a Centering Bolt *b Standard Bolt HINT:
Centering bolts are used to install the hood hinges and hood lock. The hood and hood lock cannot be adjusted with the centering bolts installed. Substitute the centering bolts with standard bolts with washers when making adjustments...
Categories
WARNING
When removing the fuel-filler cap, loosen the cap slightly and wait
for
any hissing to stop, then remove it
Fuel spray is dangerous. Fuel can burn skin and eyes and cause illness
if
ingested. Fuel spray is released when there is pressure in the fuel tank and
the fuel-filler cap is removed too quickly.
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