Check Bus 1 Line [10/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

Symptom	Trouble Area
There are ECUs or sensors that display a communication stop on the bus diagnostic screen. Or, there are ECUs or sensors that display communication stop history on the "Detail" screen.	CAN main bus line, CAN branch line or connector Central gateway ECU (network gateway ECU) Clearance warning ECU assembly (w/ Parking Support Brake System) Forward recognition camera Millimeter wave radar sensor assembly Front side radar sensor (A) (w/ Front Side Radar Sensor System) Parking assist ECU (w/ Panoramic View Monitor System) Blind spot monitor sensor LH (B) Rear television camera assembly (w/ Parking Assist Monitor System) No. 3 global CAN junction connector No. 7 global CAN junction connector No. 14 global CAN junction connector No. 18 global CAN junction connector No. 19 global CAN junction connector No. 4 CAN junction terminal

Symptom

Trouble Area

There are ECUs or sensors that display a communication stop on the bus diagnostic screen. Or, there are ECUs or sensors that display communication stop history on the "Detail" screen.

CAN main bus line, CAN branch line or connector
Central gateway ECU (network gateway ECU)
Clearance warning ECU assembly
(w/ Parking Support Brake System)
Forward recognition camera
Millimeter wave radar sensor assembly
Front side radar sensor (A)
(w/ Front Side Radar Sensor System)
Parking assist ECU
(w/ Panoramic View Monitor System)
Blind spot monitor sensor LH (B)
Rear television camera assembly
(w/ Parking Assist Monitor System)
No. 3 global CAN junction connector
No. 7 global CAN junction connector
No. 14 global CAN junction connector
No. 18 global CAN junction connector
No. 19 global CAN junction connector
No. 4 CAN junction terminal