Lexus NX manuals

Lexus NX: Lost Communication With TCM (U0101,U0122,U0142,U0155,U0327,U1114,U1117)

Lexus NX Service Manual / Vehicle Exterior / Door / Hatch / Power Back Door System / Lost Communication With TCM (U0101,U0122,U0142,U0155,U0327,U1114,U1117)

DESCRIPTION

These DTCs are stored when a malfunction occurs in the CAN communication circuit.

DTC No.

Detection Item

Trouble Area

U0101

Lost Communication With TCM
  • CAN communication system
  • ECM
  • Multiplex network door ECU

U0122

Lost Communication With Vehicle Dynamics Control Module
  • CAN communication system
  • Brake actuator assembly (skid control ECU)
  • Multiplex network door ECU

U0142

Lost Communication with Body Control Module "B"
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Multiplex network door ECU

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module
  • CAN communication system
  • Combination meter assembly
  • Multiplex network door ECU

U0327

Lost Communication with Vehicle Security Control Module
  • CAN communication system
  • Certification ECU (smart key ECU assembly)
  • Multiplex network door ECU

U1114

Lost Communication with Main Switch Module
  • CAN communication system
  • Combination meter assembly
  • Multiplex network door ECU

U1117

Lost Communication with Accessory Gateway
  • CAN communication system
  • Bus buffer ECU
  • Multiplex network door ECU

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > Back Door > Clear DTCs

(b) Check for DTCs.

Click here

Body Electrical > Back Door > Trouble Codes

OK:

DTC (CAN communication system DTC) is not output

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

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