Lexus NX manuals

Lexus NX: Control Module Communication Bus "A" Off (U0073,U0100,U0101,U0126,U0129,U0142,U0155,U0293)

Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System (for Triple Beam Headlight) / Control Module Communication Bus "A" Off (U0073,U0100,U0101,U0126,U0129,U0142,U0155,U0293)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0073

Control Module Communication Bus "A" Off

Bus off condition is detected.

CAN communication system

U0100

Lost Communication with ECM / PCM "A"

Communication stop occurs between the headlight ECU sub-assembly LH and ECM continuously for 10 seconds or more.
  • CAN communication system
  • ECM
  • Headlight ECU sub-assembly LH

U0101

Lost Communication with TCM

Communication stop occurs between the headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more.
  • CAN communication system
  • Hybrid vehicle control ECU
  • Headlight ECU sub-assembly LH

U0126

Lost Communication with Steering Angle Sensor Module

Communication stop occurs between the headlight ECU sub-assembly LH and steering sensor continuously for 10 seconds or more.
  • CAN communication system
  • Steering sensor
  • Headlight ECU sub-assembly LH

U0129

Lost Communication with Brake System Control Module

Communication stop occurs between the headlight ECU sub-assembly LH and brake actuator assembly (skid control ECU) continuously for 10 seconds or more.
  • CAN communication system
  • Brake actuator assembly (skid control ECU)
  • Headlight ECU sub-assembly LH

U0142

Lost Communication with Body Control Module "B"

Communication stop occurs between the headlight ECU sub-assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Headlight ECU sub-assembly LH

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

Communication stop occurs between the headlight ECU sub-assembly LH and combination meter assembly continuously for 30 seconds or more.
  • CAN communication system
  • Combination meter assembly
  • Headlight ECU sub-assembly LH

U0293

Lost Communication with Hybrid Vehicle Control System

Communication stop occurs between the headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more.
  • CAN communication system
  • Hybrid vehicle control ECU
  • Headlight ECU sub-assembly LH

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > AFS > Clear DTCs

(b) Check for DTCs.

Click here

Body Electrical > AFS > Trouble Codes

OK:

DTCs U0073, U0100, U0101, U0126, U0129, U0142, U0155 and U0293 output does not occur.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

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