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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (Symptom Tests) (2 Of 2) (Except Hybrid) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> Check Bus 4 Line for Short to +B [08/2021 - 07/2022] >> Description

Check Bus 4 Line for Short to +B [08/2021 - 07/2022]: Description

There may be a short circuit between one of the CAN bus lines and +B when there is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3.

Symptom Trouble Area
There is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3.
  • Short to +B in CAN main bus line
  • Short to +B in CAN branch line
  • Central gateway ECU (network gateway ECU)
  • Tire pressure ECU and receiver
  • Steering sensor
  • Power steering ECU with motor assembly
  • Brake actuator assembly
  • Occupant detection ECU
  • Airbag ECU assembly
  • No. 4 CAN junction connector
  • No. 7 CAN junction connector
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