Check Bus 1 Lines for Short Circuit [02/2019 - 08/2020]: Description

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There may be a short circuit between the CAN main bus wire and/or CAN branch wire 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 central gateway ECU (network gateway ECU) is below 54 Ω.	Short in CAN main bus wire Short in CAN branch wire Central gateway ECU (network gateway ECU) Forward recognition camera1 Millimeter wave radar sensor assembly1 Blind spot monitor sensor LH2 Parking assist ECU3 Television camera assembly3, 5 Clearance warning ECU assembly4 Swing grille actuator assembly6 Radiator shutter sub-assembly*6 No. 2 CAN junction connector No. 8 CAN junction connector No. 1 CAN junction terminal

Symptom

Trouble Area

Resistance between terminals 23 (CA1H) and 8 (CA1L) of central gateway ECU (network gateway ECU) is below 54 Ω.

Short in CAN main bus wire
Short in CAN branch wire
Central gateway ECU (network gateway ECU)
Forward recognition camera*1
Millimeter wave radar sensor assembly*1
Blind spot monitor sensor LH*2
Parking assist ECU*3
Television camera assembly*3, *5
Clearance warning ECU assembly*4
Swing grille actuator assembly*6
Radiator shutter sub-assembly*6
No. 2 CAN junction connector
No. 8 CAN junction connector
No. 1 CAN junction terminal

*1: w/ Pre-collision System

*2: w/ Blind Spot Monitor System

*3: w/ Panoramic View Monitor System

*4: w/ Intuitive Parking Assist System

*5: w/ Parking Assist Monitor System

*6: w/ Grille Shutter System