Check Bus 5 Lines for Short Circuit [10/2023 - ]: Description

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There may be a short circuit between the CAN main bus wire and/or CAN branch lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is below 54 Ω.

Symptom	Trouble Area
Resistance between terminals 15 (CA5H) and 16 (CA5L) 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) Position control ECU assembly2 Main body ECU (multiplex network body ECU) Certification ECU (smart key ECU assembly)3 Air conditioning amplifier assembly Multiplex network door ECU*1 Combination meter assembly No. 1 CAN junction connector No. 5 CAN junction connector No. 7 CAN junction connector

Symptom

Trouble Area

Resistance between terminals 15 (CA5H) and 16 (CA5L) 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)
Position control ECU assembly*2
Main body ECU (multiplex network body ECU)
Certification ECU (smart key ECU assembly)*3
Air conditioning amplifier assembly
Multiplex network door ECU*1
Combination meter assembly
No. 1 CAN junction connector
No. 5 CAN junction connector
No. 7 CAN junction connector

*1: w/ Power Back Door System

*2: w/ Memory

*3: w/ Smart Key System