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Home >> Lexus >> 2016 >> IS 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System - Circuit Tests (3 Of 4) >> Can Communication System >> Check Bus 2 Lines for Short Circuit [09/2020 - 11/2021] >> Description

Check Bus 2 Lines for Short Circuit [09/2020 - 11/2021]: Description

There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω.

Symptom Trouble Area
Resistance between terminals 18 (CA4H) and 17 (CA4L) of 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)
  • ECM
  • Combination meter assembly
  • Air conditioning amplifier assembly
  • Power steering ECU assembly
  • Certification ECU (smart key ECU assembly)
  • Airbag sensor assembly
  • Yaw rate sensor
  • Main body ECU (multiplex network body ECU)
  • Skid control ECU (brake actuator assembly)
  • Steering sensor
  • Stereo component equalizer assembly (w/ ASC System)
  • Tire pressure warning ECU and receiver
  • No. 1 CAN junction connector
  • No. 2 CAN junction connector