Check Bus 1 Lines for Short Circuit [06/2017 - 08/2018]: Description

There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the central gateway ECU (network gateway ECU) is below 54 Ω.

Symptom	Trouble Area
Resistance between terminals 23 (CA1H) and 8 (CA1L) of the 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) Forward recognition camera (w/ Toyota Safety Sense P) Millimeter wave radar sensor assembly (w/ Toyota Safety Sense P) Blind spot monitor sensor RH (w/ Blind Spot Monitor System) Rear television camera assembly (w/ Parking Assist Monitor System or Panoramic View Monitor System) Clearance warning ECU assembly (w/ Intelligent Clearance Sonar System) Television camera controller (w/ Panoramic View Monitor System) No. 1 CAN junction connector No. 5 CAN junction connector

Symptom

Trouble Area

Resistance between terminals 23 (CA1H) and 8 (CA1L) of the 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)
Forward recognition camera (w/ Toyota Safety Sense P)
Millimeter wave radar sensor assembly (w/ Toyota Safety Sense P)
Blind spot monitor sensor RH (w/ Blind Spot Monitor System)
Rear television camera assembly (w/ Parking Assist Monitor System or Panoramic View Monitor System)
Clearance warning ECU assembly (w/ Intelligent Clearance Sonar System)
Television camera controller (w/ Panoramic View Monitor System)
No. 1 CAN junction connector
No. 5 CAN junction connector