Lexus ES manuals

Lexus ES: Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012987,U014087)

Lexus ES (XZ10) Service Manual / Vehicle Interior / Lighting (ext) / Lighting System (for Gasoline Model) / Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012987,U014087)

DESCRIPTION

These DTCs are stored if a CAN communication malfunction occurs between the forward recognition camera and other ECUs.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

U010087

Lost Communication with ECM/PCM "A" Missing Message

The forward recognition camera does not receive data from the ECM for approximately 5 seconds or more.

  • CAN communication system
  • ECM

Forward recognition camera

U012587

Lost Communication with Multi-axis Acceleration Sensor Module Missing Message

The forward recognition camera does not receive data from the airbag ECU assembly for approximately 5 seconds or more.

  • CAN communication system
  • Airbag ECU assembly

Forward recognition camera

U012987

Lost Communication with Brake System Control Module Missing Message

The forward recognition camera does not receive data from the skid control ECU (brake actuator assembly) for approximately 5 seconds or more.

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

Forward recognition camera

U014087

Lost Communication with Body Control Module Missing Message

The forward recognition camera does not receive data from the main body ECU (multiplex network body ECU) for approximately 5 seconds or more.

  • CAN communication system
  • Main body ECU (multiplex network body ECU)

Forward recognition camera

PROCEDURE

1.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

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

(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 engine switch on (IG).

(c) Wait 10 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 are not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

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