Toyota Yaris: Networking / Network Gateway Ecu

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)...

Components

COMPONENTS ILLUSTRATION *1 COWL SIDE TRIM BOARD RH *2 FRONT DOOR SCUFF PLATE RH *3 FRONT DOOR OPENING TRIM WEATHERSTRIP RH *4 GLOVE COMPARTMENT DOOR ASSEMBLY *5 LOWER NO...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: System Description

SYSTEM DESCRIPTION SEAT BELT WARNING SYSTEM DESCRIPTION (a) Seat belt warning light operation for driver seat belt: (1) The seat belt warning light on the combination meter assembly illuminates, blinks or turns off in accordance with the driver seat belt state, vehicle speed, shift lever position and parking brake state...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT STOP LIGHT SWITCH ASSEMBLY (a) Disconnect the stop light switch assembly connector. (b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below. Standard Voltage: Tester Connection Condition Specified Condition A63-7 (B) - A63-2 (GND) Always 11 to 14 V A63-6 (B) - A63-2 (GND) Ignition switch on (IG) 11 to 14 V Standard Resistance: Tester Connection Condition Specified Condition A63-2 (GND) - Body ground Always Below 1 Ω If the result is not as specified, repair or replace the wire harness or connector...