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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 (3 Of 4) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> Check Bus 4 Lines for Short Circuit [06/2018 - 08/2020] >> Description

Check Bus 4 Lines for Short Circuit [06/2018 - 08/2020]: Description

There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ECU (network gateway ECU) is below 54 Ω.

Symptom Trouble Area
Resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ECU (network gateway ECU) is below 54 Ω.
  • Short in CAN main bus lines
  • Short in CAN branch lines
  • 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
  • Absorber control ECU

    (w/ AVS System)

  • Airbag ECU assembly
  • No. 2 CAN junction connector
  • No. 4 CAN junction connector
  • No. 7 CAN junction connector
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