Dtc U0100 Lost Communication With Ecm/Pcm A

Restraints. Lexus Is250, Is220D. Gse20 Ale20
Pre-Crash Safety. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

INSPECTION PROCEDURE

DTC U0100 Lost Communication with ECM/PCM "A"

DTC U0122 Lost Communication with Vehicle Dynamics Control Module

DTC U0146 Lost Communication with Gateway "A"

DTC U0151 Lost Communication with Airbag ECU

DTC U1101 Lost Communication with Distance Control ECU


DESCRIPTION

The seat belt control ECU receives signals from the skid control ECU, gateway ECU, center airbag sensor assembly, distance control ECU via the CAN communication system.
The distance control ECU receives signals from the ECM via the CAN communication system.

DTC No.
DTC Detection Item
Inspection Area
U0100
ECM communication error
  1. CAN communication system
  2. ECM
  3. Distance control ECU
U0122
Skid control ECU communication error
  1. CAN communication system
  2. Skid control ECU
  3. Seat belt control ECU
U0146
Gateway ECU communication error
  1. CAN communication system
  2. Gateway ECU
  3. Seat belt control ECU
U0151
Center airbag sensor communication error
  1. CAN communication system
  2. Center airbag sensor assembly
  3. Seat belt control ECU
U1101
Distance control ECU communication error
  1. CAN communication system
  2. Distance control ECU
  3. Seat belt control ECU
HINT:
When two or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harness of each ECU.

INSPECTION PROCEDURE

Refer to the U0100 (CAN communication system (LHD)) (Click here).
Refer to the U0100 (CAN communication system (RHD)) (Click here).
Refer to the U0122 (CAN communication system (LHD)) (Click here).
Refer to the U0122 (CAN communication system (RHD)) (Click here).
Refer to the U0146 (CAN communication system (LHD)) (Click here).
Refer to the U0146 (CAN communication system (RHD)) (Click here).
Refer to the U0151 (CAN communication system (LHD)) (Click here).
Refer to the U0151 (CAN communication system (RHD)) (Click here).
Refer to the U1101 (CAN communication system (LHD)) (Click here).
Refer to the U1101 (CAN communication system (RHD)) (Click here).