Toyota Yaris: Dynamic Radar Cruise Control System / 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.
| 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 ECM and millimeter wave radar sensor assembly is detected for 1 second or more. | CAN communication system | Radar Cruise2 |
| U012687 | Lost Communication with Steering Angle Sensor Module Missing Message | When the dynamic radar cruise control system is operating, a communication error between the millimeter wave radar sensor assembly and steering sensor continues for 5 seconds or more. | CAN communication system | Radar Cruise2 |
| U012987 | Lost Communication with Brake System Control Module Missing Message | When the dynamic radar cruise control system is operating, a communication error between the millimeter wave radar sensor assembly and skid control ECU (brake actuator assembly) continues for 5 seconds or more. | CAN communication system | Radar Cruise2 |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | When the dynamic radar cruise control system is operating, a communication error between the millimeter wave radar sensor assembly and combination meter assembly continues for 12 seconds or more. | CAN communication system | Radar Cruise2 |
PROCEDURE
| 1. | CLEAR DTC |
(a) Clear the DTCs.
Powertrain > Radar Cruise2 > Clear DTCs
|
| 2. | CHECK FOR DTCs |
(a) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(b) Check for DTCs.
Powertrain > Radar Cruise2 > Trouble Codes| Result | Proceed to |
|---|---|
| DTC U010087, U012687, U012987 or U015587 is output | A |
| DTCs are not output | B |
| None of the above conditions are met | C |
| A |
 | GO TO CAN COMMUNICATION SYSTEM |
| B |
 | USE SIMULATION METHOD TO CHECK |
| C |
 | GO TO DTC CHART |
Lost Communication with ECM/PCM "A" Missing Message (U010087,U010487,U012287)
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...
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...
Other information:
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Removal
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Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during the windshield glass removal/installation are shown below...
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Key Suspend Function
If a key is left in the vehicle, the functions of the key left in the vehicle are temporarily suspended to prevent theft of the vehicle.
To restore the functions, press the unlock button on the functions-suspended key in the vehicle.
