Toyota Corolla Cross: My Settings
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PRECAUTION PRECAUTIONS FOR DISCONNECTING CABLE FROM NEGATIVE (-) AUXILIARY BATTERY TERMINAL
NOTICE:
After the ignition switch is turned off, there may be a waiting time before disconnecting the
PARTS LOCATION ILLUSTRATION
*1 FORWARD RECOGNITION CAMERA
- - ILLUSTRATION
*1 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
*2 COMBINATION METER ASSEMBLY
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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 Miss
TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Click here (b) Reconnect the power distribution box assembly connectors.
(c) Measure the
Precaution
Power Source Control System Missing Message (B278C87)
