Toyota Yaris: Dynamic Radar Cruise Control System / Lost Communication with Image Processing Module "A" Missing Message (U023A87)

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Engine & Hybrid System / Cruise Control / Dynamic Radar Cruise Control System / Lost Communication with Image Processing Module "A" Missing Message (U023A87)

DESCRIPTION

The millimeter wave radar sensor assembly is connected to the forward recognition camera via the CAN communication line. If the millimeter wave radar sensor assembly receives signals indicating that its communication with the forward recognition camera is abnormal, the millimeter wave radar sensor assembly stores DTC U023A87.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from
U023A87	Lost Communication with Image Processing Module "A" Missing Message	When the ignition switch is ON for 3 seconds or more and the dynamic radar cruise control system is operating, a communication data malfunction between the forward recognition camera and the millimeter wave radar sensor assembly continues for approximately 2 seconds or more.	Pre-collision system	Radar Cruise2

PROCEDURE

1.	GO TO PRE-COLLISION SYSTEM

HINT:

If DTC U023A87 is output by the dynamic radar cruise control system, perform troubleshooting for the pre-collision system.

Click here

END

Lost Communication with ECM/PCM "A" Missing Message (U010087,U012687,U012987,U015587)

DESCRIPTION The millimeter wave radar sensor assembly 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...

Internal Control Module Software Incompatibility Not Programmed (U030051,U030057)

DESCRIPTION If the millimeter wave radar sensor assembly cannot confirm the vehicle information (powertrain type) sent from the ECM, the millimeter wave radar sensor assembly stores DTC U030051...

Other information:

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Back Door Entry Unlock Function does not Operate

DESCRIPTION If the entry unlock function does not operate for the back door only, but the entry lock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the open switch (connection between the back door opener switch assembly and certification ECU (smart key ECU assembly))...

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: System Malfunction Message is Displayed on the Multi-information Display

SYSTEM DESCRIPTION If an abnormal operation that may lead to a malfunction of the steering lock ECU (steering lock actuator or upper bracket assembly), or abnormal vehicle speed information is detected by the certification ECU (smart key ECU assembly), a system malfunction message is displayed on the multi-information display...