Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U015587,U110687)
DESCRIPTION
The forward recognition camera 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 | MIL | 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 forward recognition camera is detected for 5 seconds or more. | CAN communication system | Does not come on | Forward recognition camera |
| U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | When the vehicle speed is 1 km/h or more, a communication error between the forward recognition camera and yaw rate sensor assembly*1 or airbag sensor assembly*2 continues for 5 seconds or more. | CAN communication system | Does not come on | Forward recognition camera |
| U012687 | Lost Communication with Steering Angle Sensor Module Missing Message | When the engine switch is on (IG) for 2 seconds or more, a communication error between the forward recognition camera and steering sensor continues for 5 seconds or more. | CAN communication system | Does not come on | Forward recognition camera |
| U012987 | Lost Communication with Brake System Control Module Missing Message | When the engine switch is on (IG) for 2 seconds or more, a communication error between the forward recognition camera and skid control ECU (brake actuator assembly) continues for 5 seconds or more. | CAN communication system | Does not come on | Forward recognition camera |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | When the engine switch is on (IG) for 2 seconds or more, a communication error between the forward recognition camera and combination meter assembly continues for 50 seconds or more. | CAN communication system | Does not come on | Forward recognition camera |
| U110687 | Lost Communication with Electric Parking Brake Module Missing Message | When the engine switch is on (IG) for 2 seconds or more, a communication error between the forward recognition camera and skid control ECU (brake actuator assembly) continues for 5 seconds or more. | CAN communication system | Does not come on | Forward recognition camera |
- *1: for TFT Meter Type
- *2: for Optitron Meter Type
PROCEDURE
| 1. | CHECK FOR DTCs |
(a) Clear the DTCs.
Powertrain > Radar Cruise2 > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Powertrain > Radar Cruise2 > Trouble CodesOK:
DTCs are not output.
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
| NG | | GO TO CAN COMMUNICATION SYSTEM |
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 Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message (U023587)
DESCRIPTION The forward recognition camera communicates with the millimeter wave radar sensor assembly via CAN communication. If a communication malfunction between the forward recognition camera and ...
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Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Can Communication System: Suspension Control ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Suspension Control ECU Communication Stop Mode Either condition is met:
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Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Airbag System: Short in D Squib (Dual Stage - 2nd Step) Circuit (B1810-B1813)
DESCRIPTION The driver squib 2nd step circuit consists of the airbag sensor assembly, spiral cable sub-assembly and horn button assembly. The airbag sensor assembly uses this circuit to deploy the airbag when deployment conditions are met. These DTCs are stored when a malfunction is detected in the ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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