Check Bus 4 Lines for Short Circuit [02/2019 - 08/2020]: Description

WARNING: This page is about a different variant/trim than selected.

There may be a short circuit between the CAN main bus wire and/or CAN branch wire when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ECU (network gateway ECU) is below 54 Ω.

Symptom	Trouble Area
Resistance between terminals 22 (CA2H) and 7 (CA2L) of the 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) Airbag ECU assembly ECM Steering sensor Rack and pinion power steering gear assembly Brake booster with master cylinder assembly (skid control ECU) Parking brake ECU assembly Hybrid vehicle control ECU assembly Tire pressure warning ECU and receiver1 Occupant detection ECU2 No. 1 CAN junction connector No. 4 CAN junction connector No. 6 CAN junction connector

Symptom

Trouble Area

Resistance between terminals 22 (CA2H) and 7 (CA2L) of the 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)
Airbag ECU assembly
ECM
Steering sensor
Rack and pinion power steering gear assembly
Brake booster with master cylinder assembly (skid control ECU)
Parking brake ECU assembly
Hybrid vehicle control ECU assembly
Tire pressure warning ECU and receiver*1
Occupant detection ECU*2
No. 1 CAN junction connector
No. 4 CAN junction connector
No. 6 CAN junction connector

*1: w/ Tire Pressure System (Tire Inflation Pressure Display Function)

*2: w/ Occupant Classification System