Dtc U0100 Lost Communication With Ecm / Pcm A

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
Cruise Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTCs

DTC U0100 Lost Communication with ECM / PCM "A"

DTC U0101 Lost Communication With TCM

DTC U0123 Lost Communication with Yaw Rate Sensor Module

DTC U0126 Lost Communication with Steering Angle Sensor Module

DTC U0129 Lost Communication with Brake System Control Module

DTC U0142 Lost Communication with Body Control Module "B"

DTC U0155 Lost Communication with Combination Meter

DTC U0235 Lost Communication with Cruise Control Front Distance Range Sensor

DTC U1104 Lost Communication with Driving Support ECU


DESCRIPTION

These DTCs are output when a communication malfunction occurs between the sensors and ECUs.

DTC No.
DTC Detection Condition
Trouble Area
U0100
While the vehicle is being driven at 1 km/h (1 mph) or more, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more.
  1. CAN communication system
  2. ECM
  3. Forward recognition camera
U0101
While the vehicle is being driven at 1 km/h (1 mph) or more, a communication error between the TCM and the forward recognition camera is detected for approximately 5 seconds or more.
  1. CAN communication system
  2. TCM
  3. Forward recognition camera
U0123
While the vehicle is being driven at 1 km/h (1 mph) or more, a communication error between the yaw rate sensor (airbag sensor assembly) and the forward recognition camera is detected for approximately 5 seconds or more.
  1. CAN communication system
  2. Yaw rate sensor (airbag sensor assembly)
  3. Forward recognition camera
U0126
2 seconds after the engine switch is turned on (IG), a communication error between the Steering angle sensor and the forward recognition camera is detected for approximately 5 seconds or more.
  1. CAN communication system
  2. Steering angle sensor
  3. Forward recognition camera
U0129
2 seconds after the engine switch is turned on (IG), a communication error between the skid control ECU (master cylinder solenoid) and the forward recognition camera is detected for approximately 5 seconds or more.
  1. CAN communication system
  2. Skid control ECU (master cylinder solenoid)
  3. Forward recognition camera
U0142
2 seconds after the engine switch is turned on (IG), a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.
  1. CAN communication system
  2. Main body ECU (multiplex network body ECU)
  3. Forward recognition camera
U0155
While the engine switch is on (IG), a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more.
  1. CAN communication system
  2. Combination meter assembly
  3. Forward recognition camera
U0235
2 seconds after the engine switch is turned on (IG), a communication error between the driving support ECU assembly and the forward recognition camera is detected for approximately 5 seconds.
  1. CAN communication system
  2. Millimeter wave radar sensor assembly
  3. Forward recognition camera
U1104
2 seconds after the engine switch is turned on (IG), a communication error between the driving support ECU assembly and the forward recognition camera is detected for approximately 5 seconds.
  1. CAN communication system
  2. Driving support ECU assembly
  3. Forward recognition camera

INSPECTION PROCEDURE

1.CHECK FOR DTCs

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

  1. Clear the DTCs (Click here).

  1. Make sure that the DTC detection conditions are met.

    HINT:
    If the detection conditions are not met, the system cannot detect the malfunction.
    1. Turn the engine switch on (IG) and wait 50 seconds or more.
    2. Drive the vehicle at 1km/h (1 mph) or more for 5 second or more.

  1. Check the DTCs (Click here).


Result:

Result
Proceed to
DTC U0100, U0101, U0123, U0126, U0129, U0142, U0155, U0235 and U1104 are not output
A
DTC U0100, U0101, U0123, U0126, U0129, U0142, U0155, U0235 or U1104 is output (for LHD)
B
DTC U0100, U0101, U0123, U0126, U0129, U0142, U0155, U0235 or U1104 is output (for RHD)
C


B
GO TO CAN COMMUNICATION SYSTEM (Click here)

C
GO TO CAN COMMUNICATION SYSTEM (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)