Lexus ES: 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 Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream 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
SEE MORE:
PKSB (Parking Support Brake)
The Parking Support Brake system
consists of the following functions
that operate when driving at a low
speed or backing up, such as when
parking. When the system determines
that the possibility of a collision
with a detected object or
pedestrian is high, a warning operates
to urge the drive
Back Camera Disconnected (C1622)
DESCRIPTION This DTC is stored if the radio receiver assembly judges that the signals or signal lines between the rear television camera assembly and the multi-display assembly are not normal as a result of its self check. DTC No. Detection Item DTC Detection Condition Trouble Area C162
