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Home >> Lexus >> 2021 >> ES 350 Luxury >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (Except Hybrid) - Circuit Tests (4 Of 4) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> Check Bus 4 Line for Short to GND [06/2018 - 08/2020] >> Description

Check Bus 4 Line for Short to GND [06/2018 - 08/2020]: Description

There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3.

Symptom Trouble Area
There is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3.
  • Short to ground in CAN main bus line
  • Short to ground in CAN branch line
  • Central gateway ECU (network gateway ECU)
  • Tire pressure warning ECU and receiver
  • Occupant detection ECU
  • Steering sensor
  • Rack and pinion power steering gear assembly
  • Brake actuator assembly
  • Airbag ECU assembly
  • Absorber control ECU

    (w/ AVS System)

  • No. 2 CAN junction connector
  • No. 4 CAN junction connector
  • No. 7 CAN junction connector
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