Dtc U0100 Lost Communication With Ecm / Pcm A


DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

DTC U0100 Lost Communication with ECM / PCM "A"

DTC U0126 Lost Communication with Steering Angle Sensor Module

DTC U0129 Lost Communication with Brake System Control Module


DESCRIPTION

The power steering ECU receives signals from the ECM, steering angle sensor and skid control ECU via the CAN communication system.

DTC Code
DTC Detection Condition
Trouble Area
U0100
The engine speed signal is lost.
  1. ECM
  2. CAN communication system
  3. Power steering ECU assembly
U0126
The steering angle signal is lost.
  1. Steering angle sensor (Spiral cable sub-assembly)
  2. CAN communication system
  3. Power steering ECU assembly
U0129
The vehicle speed signal is lost.
  1. Skid control ECU
  2. CAN communication system
  3. Power steering ECU assembly

INSPECTION PROCEDURE

1.CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

  1. Clear the DTC(s) (LandCruiser RM00000275008XX.html).

  1. Check for DTCs (LandCruiser RM00000275008XX.html).

    Result
    Result
    		Proceed to
    DTC is not output.
    		A
    DTC is output.
    		for LHD with Entry and Start System
    		B
    for LHD without Entry and Start System
    		C
    for RHD with Entry and Start System
    		D
    for RHD without Entry and Start System
    		E



B
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0C5X.html)

C
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0BYX.html)

D
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0BZX.html)

E
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0C0X.html)
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)