Lexus NX: Lost Communication With Multi-axis Acceleration Sensor Module Missing Message (U012587,U012687,U012987,U013187,U015587,U029387)
DESCRIPTION
When a malfunction is detected between various ECUs and sensors, these DTCs are stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U012587 | Lost Communication With Multi-axis Acceleration Sensor Module Missing Message | 3 seconds after the power switch is turned on (IG), while the vehicle speed is 5 km/h (4 mph) or more and the lane tracing assist is on, a communication error between the airbag ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U012687 | Lost Communication with Steering Angle Sensor Module Missing Message | 3 seconds after the power switch is turned on (IG), while the lane tracing assist is on, a communication error between the steering sensor and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U012987 | Lost Communication with Brake System Control Module Missing Message | 3 seconds after the power switch is turned on (IG), while the lane tracing assist is on, a communication error between the skid control ECU (brake booster with master cylinder assembly) and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U013187 | Lost Communication with Power Steering Control Module Missing Message | 3 seconds after the power switch is turned on (IG), while the lane tracing assist is on, a communication error between the power steering ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | 3 seconds after the power switch is turned on (IG), while the lane tracing assist 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 |
| U029387 | Lost Communication With Hybrid Powertrain Control Module Missing Message | 3 seconds after the power switch is turned on (IG), while the vehicle speed is 5 km/h (4 mph) or more and the lane tracing assist is on, a communication error between the hybrid vehicle control ECU and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
PROCEDURE
| 1. | CHECK FOR DTC (LANE TRACING ASSIST SYSTEM) |
(a) Clear the DTCs.
Click here .gif)
(b) Make sure that the DTC detection conditions are met.
HINT:
If the conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC U012587, U012687, U012987, U013187, U015587 and U029387 are not output | A |
| DTC U012587, U012687, U012987, U013187, U015587 or U029387 is output | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | GO TO CAN COMMUNICATION SYSTEM |
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