Lexus NX manuals

Lexus NX: Lost Communication with Brake System Control Module (U0129,U0142,U0293)

Lexus NX Service Manual / Audio & Visual & Telematics / Audio / Video / Asc System / Lost Communication with Brake System Control Module (U0129,U0142,U0293)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0129

Lost Communication with Brake System Control Module

No communication with brake booster with master cylinder assembly (skid control ECU)
  • CAN communication system
  • Brake booster with master cylinder assembly (skid control ECU)
  • Stereo component equalizer assembly

U0142

Lost Communication with Body Control Module "B"

No communication with main body ECU (multiplex network body ECU)
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Stereo component equalizer assembly

U0293

Lost Communication With Hybrid Powertrain Control Module

No communication with hybrid vehicle control ECU
  • CAN communication system
  • Hybrid vehicle control ECU
  • Stereo component equalizer assembly

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Click here

Body Electrical > ASC > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Click here

Body Electrical > ASC > Trouble Codes

OK:

U0129, U0142 and U0293 are not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

READ NEXT:

 Main Switch Circuit

DESCRIPTION The stereo component equalizer assembly detects vehicle sound switch signals. The ASC system can be turned on and off by operating the vehicle sound switch. WIRING DIAGRAM CAUTION / NOTIC

 Power Source Circuit

DESCRIPTION This circuit is the power source circuit for the stereo component equalizer assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system

 Audio And Visual System

SEE MORE:

 Checking Monitor Status

CHECKING MONITOR STATUS The purpose of the monitor result (mode 06) is to allow access to the results of on-board diagnostic monitoring tests of specific components/systems that are not continuously monitored. Examples are catalysts and evaporative emissions (EVAP) systems. The monitor result allows

 Installation

INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. If the side airbag was deployed, replace the front seat airbag assembly LH, separate type front seatback spring assembly, seatback felt, separate type front seatback cover and s

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