Lexus NX: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message (U012587,U012987,U014087,U029387)

Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System (for Triple Beam Headlight) / Lost Communication with Multi-axis Acceleration Sensor Module Missing Message (U012587,U012987,U014087,U029387)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

U012587

Lost Communication with Multi-axis Acceleration Sensor Module Missing Message

Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for 5 seconds or more.

  • CAN communication system
  • Airbag ECU assembly
  • Forward recognition camera

Front Recognition Camera (Front Lighting Control)

U012987

Lost Communication with Brake System Control Module Missing Message

Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for 5 seconds or more.

  • CAN communication system
  • Brake booster with master cylinder assembly (skid control ECU)
  • Forward recognition camera

Front Recognition Camera (Front Lighting Control)

U014087

Lost Communication with Body Control Module Missing Message

Communication stop occurs between the forward recognition camera and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.

  • CAN communication system
  • Main body ECU (multiplex network body ECU) and
  • Forward recognition camera

Front Recognition Camera (Front Lighting Control)

U029387

Lost Communication With Hybrid Powertrain Control Module Missing Message

Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for 5 seconds or more.

  • CAN communication system
  • Hybrid vehicle control ECU
  • Forward recognition camera

Front Recognition Camera (Front Lighting Control)

PROCEDURE

1.

CLEAR 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 / Front Recognition Camera (Front Lighting Control) / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > Front Recognition Camera (Front Lighting Control) > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Wait 5 seconds or more.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Front Recognition Camera (Front Lighting Control) / Trouble Codes.

(f) Check for DTCs.

Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes

OK:

DTCs U012587, U012987, U014087 and U029387 are not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

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