Toyota Yaris: Front Radar Sensor System / Diagnosis System
DIAGNOSIS SYSTEM
DIAGNOSIS FUNCTION
(a) If a malfunction is detected in the millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores DTCs without directly informing the driver, and sends malfunction signals to the systems that use the millimeter wave radar sensor assembly.
Those systems then notify the driver.
HINT:
Refer to "HOW TO PROCEED WITH TROUBLESHOOTING" when troubleshooting for the Pre-collision System.
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TERMINALS OF ECU NOTICE:
Turning the ignition switch to ON with connectors disconnected may cause DTCs to be stored. Make sure to clear the DTCs after inspection has been performed...
DTC CHECK / CLEAR CHECK DTC (a) Check for DTCs (Test Failed / Pending / Confirmed). Body Electrical > Front Radar Sensor > Trouble Codes GTS Display Description Test Failed Represent malfunctions that were detected during the current trip...
Other information:
TERMINALS OF ECU CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
*1 Power Distribution Box Assembly *2 Main Body ECU (Multiplex Network Body ECU) (a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly...
DESCRIPTION If there is a communication malfunction between the ECM and ID code box (immobiliser code ECU), or when the communication ID codes do not match, the ECM stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B279986 Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid Either of the following conditions is met (1 trip detection logic*):
A malfunction is detected in the communication or communication lines between the ECM and ID code box (immobiliser code ECU)...
Categories
WARNING
Never allow a person to ride in the luggage compartment/trunk
Allowing a person to ride in the luggage compartment/trunk is
dangerous.
The person in the luggage compartment/trunk could be seriously injured or
killed during sudden braking or a collision.
Do not drive with the liftgate/trunk lid open
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