Dtc U0100 Lost Communication With Ecm / Pcm A


DESCRIPTION

INSPECTION PROCEDURE

CONFIRM DTC OUTPUT

DTC U0100 Lost Communication with ECM / PCM "A"

DTC U0129 Lost Communication with Skid Control ECU

DTC U0131 Lost Communication with Power Steering Control Module

DTC U0142 Lost Communication with Main Body ECU

DTC U0151 Lost Communication with Airbag ECU


DESCRIPTION


DTC No.
DTC Detection Condition
Trouble Area
U0100*
Both conditions are met:
  1. The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 and 11.5 V.
  2. No communication with the ECM continues for 2 seconds or more.
  1. ECM
  2. CAN communication system
  3. Combination meter assembly
U0129
Both conditions are met:
  1. The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 and 11.5 V.
  2. No communication with the skid control ECU continues for 3 seconds or more.
  1. Skid control ECU
  2. CAN communication system
  3. Combination meter assembly
U0131*2
Both conditions are met:
  1. The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 and 11.5 V.
  2. No communication with the power steering ECU assembly continues for 3 seconds or more.
  1. Power steering ECU assembly
  2. CAN communication system
  3. Combination meter assembly
U0142*3
Both conditions are met:
  1. The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 and 11.5 V.
  2. No communication with the main body ECU (multiplex network body ECU) continues for 3 seconds or more.
  1. Main body ECU (multiplex network body ECU)
  2. CAN communication system
  3. Combination meter assembly
U0151
Both conditions are met:
  1. The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 and 11.5 V.
  2. No communication with the center airbag sensor assembly continues for 10 seconds or more.
  1. Center airbag sensor assembly
  2. CAN communication system
  3. Combination meter assembly
  1. *1: except 5L-E
  2. *2: w/ Power Steering System, VSC
  3. *3: for Optitron Meter

INSPECTION PROCEDURE

1.CONFIRM DTC OUTPUT

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. Enter the following menus: Body Electrical / Trouble Codes.

  1. Clear the stored DTCs.

  1. Drive the vehicle at more than 5 km/h (3.1 mph) for at least 60 seconds.

  1. Stop the vehicle.

  1. Check for DTCs (LandCruiser RM0000029Z907YX.html).

    Result
    Result
    		Proceed to
    CAN communication system DTC is not output
    		A
    CAN communication system DTC is output (for LHD with Entry and Start System)
    		B
    CAN communication system DTC is output (for LHD without Entry and Start System)
    		C
    CAN communication system DTC is output (for RHD with Entry and Start System)
    		D
    CAN communication system DTC is output (for RHD without Entry and Start System)
    		E

    HINT:
    If CAN communication system DTC U0100, U0129, U0131, U0142, or U0151 and another DTC are output at the same time, perform troubleshooting for CAN communication system DTC U0100, U0129, U0131, U0142, or U0151 first.


B
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C5X.html)

C
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BYX.html)

D
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BZX.html)

E
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C0X.html)
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)