Lexus ES manuals

Lexus ES: Lost Communication with Brake System Control Module (U0129)

DESCRIPTION

The tire pressure warning ECU and receiver receives signals from the skid control ECU (brake actuator assembly) via CAN communication system.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

U0129

Lost Communication with Brake System Control Module

Lost communication with skid control ECU (brake actuator assembly)

  • CAN communication system
  • Skid control ECU (Brake actuator assembly)

-

PROCEDURE

1.

GO TO CAN COMMUNICATION SYSTEM

(a) Go to CAN communication system.

Click here

NEXT

END

READ NEXT:

 Tire Pressure Warning Light Circuit

DESCRIPTION If the tire pressure warning ECU and receiver detects any problems, the tire pressure warning light blinks for 1 minute then illuminates, and tire pressure monitoring is disabled at the sa

 Tire Position Not Identified

DESCRIPTION The tire pressure warning ECU and receiver identifies the tire position for each tire pressure warning valve and transmitter according to the wheel speed signals from the skid control ECU

 Cannot Switch to Automatic ID Registration Mode

DESCRIPTION When "Change Wheel Set" is selected on the multi-information display and the "OK" switch (steering pad switch assembly) is pushed and held, the system enters ID registration mode and the t

SEE MORE:

 Control Module Communication Bus Off (U0073,U0100,U0126,U0129,U0140,U0163,U0233,U023B,U0265,U1110)

DESCRIPTION These DTCs are stored if there is a malfunction in the CAN communication system connected to the parking assist ECU. HINT: If CAN communication system DTCs are stored, they may also be stored in other systems. DTC No. Detection Item DTC Detection Condition Trouble Area U0073

 Components

COMPONENTS ILLUSTRATION *1 NO. 2 PARKING BRAKE WIRE ASSEMBLY *2 REAR DISC BRAKE ANTI-SQUEAL SHIM KIT *3 REAR DISC BRAKE PAD *4 REAR DISC BRAKE CYLINDER ASSEMBLY *5 REAR NO. 1

© 2016-2026 Copyright www.lexguide.net