DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message [01/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus RC F and 2023 Lexus RC F. However, it is still accessible from the selected car via links, so may be relevant.
When a malfunction is detected between various ECUs and sensors, these DTCs are stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0100-87 | Lost Communication with ECM/PCM "A" Missing Message | 3 seconds or more after the engine switch is turned on (IG), while the road sign assist system is on and the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U0125-87 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | While the road sign assist system is on and the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the yaw rate sensor and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U0129-87 | Lost Communication with Brake System Control Module Missing Message | 3 seconds or more after the engine switch is turned on (IG), while the road sign assist system is on, a communication error between the skid control ECU (brake actuator assembly) and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U0140-87 | Lost Communication with Body Control Module Missing Message | 3 seconds or more after the engine switch is turned on (IG), while the road sign assist system is on, a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | 3 seconds or more after the engine switch is turned on (IG), while the road sign assist system is on, a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more. | CAN communication system |