Toyota Yaris: Smart Key System (for Entry Function) / Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Entry and Start System (for Entry Function)
| DTC No. | Detection Item | Link |
| B27A113 | Driver Side Electrical Antenna Circuit Open |
|
| B27A213 | Front Passenger Side Electrical Antenna Circuit Open |
|
| B27A813 | Outside Luggage Compartment (Back Door) Electrical key Antenna Circuit Open |
|
DTC CHECK / CLEAR CHECK FOR DTC NOTICE:
When DTC is output, Be sure to confirm and record.
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...
DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly LH (electrical key antenna) at intervals of 0...
Other information:
DESCRIPTION The ECM communicates with each sensor and ECU via CAN communication. If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U010087 Lost Communication with ECM/PCM "A" Missing Message When the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake actuator assembly) and ECM is detected for approximately 1 second or more...
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table...
Categories
Before refueling, close all the doors, windows, and the liftgate/trunk
lid, and switch the ignition OFF.
To open the fuel-filler lid, pull
the remote fuel-filler lid release.

To remove the fuel-filler cap, turn it counterclockwise.
Attach the removed cap to the
inner side of the fuel-filler lid.
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