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Home >> Lexus >> 2021 >> RX 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System - Diagnostics - Circuit Tests (1 Of 2) >> Can Communication System >> Open in Bus 4 Main Bus Line [09/2015 - 12/2017] >> Description
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Open in Bus 4 Main Bus Line [09/2015 - 12/2017]: Description

There may be an open circuit in one of the bus 4 main lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the network gateway ECU is 70 Ω or higher.

Symptom Trouble Area
Resistance between terminals 22 (CA2H) and 7 (CA2L) of network gateway ECU is 70 Ω or higher.
  • CAN main bus line or connector
  • Network gateway ECU
  • Airbag sensor assembly
  • No. 1 CAN junction connector
  • No. 7 CAN junction connector
  • No. 8 CAN junction connector
  • No. 9 CAN junction connector
  • No. 12 CAN junction connector

This malfunction is not related to the lines of a bus 4 branch or to ECUs or sensors connected to a bus 4 branch.