Lexus NX: Lost Communication with Brake System Control Module (U0129,U0140,U0293)
DESCRIPTION
These DTCs are stored when the CAN communication system is malfunctioning.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0129 | Lost Communication with Brake System Control Module | The vehicle approaching speaker controller does not receive data from the skid control ECU (brake booster with master cylinder assembly) for approximately 10 seconds or more. |
|
| U0140 | Lost Communication with Body Control Module | The vehicle approaching speaker controller does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more. |
|
| U0293 | Lost Communication with Hybrid/EV Powertrain Control Module | The vehicle approaching speaker controller does not receive data from the hybrid vehicle control ECU for approximately 10 seconds or more. |
|
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Connect the GTS to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the GTS on.
(d) Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Trouble Codes.
(e) Check for DTCs.
Body Electrical > Vehicle Proximity Notification System > Trouble CodesHINT:
When DTCs indicating a CAN communication system malfunction are output, perform troubleshooting for the CAN communication system before the vehicle proximity notification system.
| NEXT | .gif) | GO TO CAN COMMUNICATION SYSTEM |
READ NEXT:
There is No Sound Made
DESCRIPTION Based on signals received from each ECU, the vehicle approaching speaker controller outputs warning sounds through the vehicle approaching speaker assembly. WIRING DIAGRAM CAUTION / NOTIC
Vehicle Approaching Speaker
ComponentsCOMPONENTS ILLUSTRATION *1 RADIATOR SUPPORT OPENING COVER *2 VEHICLE APPROACHING SPEAKER ASSEMBLY N*m (kgf*cm, ft.*lbf): Specified torque - - RemovalREMOVAL PROCEDU
SEE MORE:
LED Headlight LH Circuit Malfunction (B2430,B2431)
DESCRIPTION The illumination of the low beam headlights is controlled by the main body ECU (multiplex network body ECU). When the headlights are turned on, the main body ECU (multiplex network body ECU) receives a signal from the headlight assembly and detects the illumination condition of the low b
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the audio and visual system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS
When troubleshooting, confirm that the problem sympto
