Toyota Camry (XV70): Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U013187,U015587)
DESCRIPTION
When a malfunction is detected between various ECUs and sensors, these DTCs are stored.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U010087 | Lost Communication with ECM/PCM "A" Missing Message |
After 3 seconds or more have elapsed since turning the lane tracing assist system on and the ignition switch to ON, while the vehicle speed is 5 km/h (3 mph) or more, a communication malfunction between the forward recognition camera and the ECM is continuously detected for 5 seconds or more |
CAN communication system |
|
U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message |
After 3 seconds or more have elapsed since turning the lane tracing assist system on and the ignition switch to ON, while the vehicle speed is 5 km/h (3 mph) or more, a communication malfunction between the forward recognition camera and the G sensor (airbag sensor assembly) is continuously detected for 5 seconds or more |
CAN communication system |
|
U012687 | Lost Communication with Steering Angle Sensor Module Missing Message |
After 3 seconds or more have elapsed since turning the lane tracing assist system on and the ignition switch to ON, a communication malfunction between the forward recognition camera and the steering sensor is continuously detected for 5 seconds or more |
CAN communication system |
|
U012987 | Lost Communication with Brake System Control Module Missing Message |
After 3 seconds or more have elapsed since turning the lane tracing assist system on and the ignition switch to ON, a communication malfunction between the forward recognition camera and the skid control ECU (brake actuator assembly) is continuously detected for 5 seconds or more |
CAN communication system |
|
U013187 | Lost Communication with Power Steering Control Module Missing Message |
After 3 seconds or more have elapsed since turning the lane tracing assist system on and the ignition switch to ON, a communication malfunction between the forward recognition camera and the power steering ECU (rack and pinion power steering gear assembly) is continuously detected for 5 seconds or more |
CAN communication system |
|
U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message |
After 3 seconds or more have elapsed since turning the lane tracing assist system on and the ignition switch to ON, a communication malfunction between the forward recognition camera and the combination meter assembly is continuously detected for 50 seconds or more |
CAN communication system |
PROCEDURE
| 1. |
CHECK FOR DTCs |
(a) Clear the DTCs.
Chassis > Lane Control > Clear DTCs(b) Reproduce the vehicle conditions that were present when the DTCs that were noted were stored.
HINT:
If the detection conditions are not met, the system cannot detect malfunctions.
(c) Check for DTCs.
Chassis > Lane Control > Trouble Codes|
Result | Proceed to |
|---|---|
|
CAN communication system DTC is not output |
A |
| CAN communication system DTC is output |
B |
| A |
.gif) | USE SIMULATION METHOD TO CHECK
|
.gif)
| B |
| GO TO CAN COMMUNICATION SYSTEM |
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HINT: Perform troubleshooting in accordance with the procedure below. The following is an outline of basic troubleshooting procedure. Confirm the troubleshooting procedure for the circuit you are working on before beginning troubleshooting.
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