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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 (2 Of 4) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> Check Bus 1 Lines for Short Circuit [08/2021 - 09/2022] >> Description

Check Bus 1 Lines for Short Circuit [08/2021 - 09/2022]: Description

There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the central gateway ECU (network gateway ECU) is below 54 Ω.

Symptom Trouble Area
Resistance between terminals 23 (CA1H) and 8 (CA1L) 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)
  • Forward recognition camera
  • Clearance warning ECU assembly

    (w/ Parking Support Brake System)

  • Parking assist ECU

    (w/ Panoramic View Monitor System)

  • Millimeter wave radar sensor assembly
  • Blind spot monitor sensor RH

    (w/ Blind Spot Monitor System)

  • Rear television camera assembly
  • No. 1 CAN junction connector
  • No. 6 CAN junction connector
  • No. 1 CAN junction terminal
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