LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2020 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (Diagnostics - Circuit Tests) (2 Of 2) >> Can Communication System >> Check Bus 4 Line for Short to +B [10/2015 - 08/2019] >> Description

Check Bus 4 Line for Short to +B [10/2015 - 08/2019]: Description

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

Symptom Trouble Area
No resistance exists between terminal 22 (CA2H) of the network gateway ECU and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the network gateway ECU and terminal 16 (BAT) of the DLC3.
  • Short in CAN main bus line
  • Short in CAN branch line
  • Network gateway ECU
  • Skid control ECU assembly
  • ECM assembly
  • Tire pressure warning ECU and receiver
  • Absorber control ECU (w/ AVS)
  • Parking brake ECU assembly
  • Power steering ECU assembly
  • Steering sensor
  • Yaw rate sensor assembly
  • Airbag sensor assembly
  • Hybrid vehicle control ECU assembly
  • Occupant detection ECU
  • 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