October 2023 - 32

Decoding automobile network
communication challenges
Gaining a deeper understanding of troubleshooting techniques and
resolutions for network communication issues in modern vehicles.
By Scott Brown, Technical Editor
Photo courtesy of Scott Brown
N
etwork communications are an essential
part of modern vehicle operations. Most
vehicles today possess multiple modules that use shared
information across different networks with some network protocols
being different. Certain modules are responsible for linking
these devices and other electronic systems in the vehicle together.
However, when communication faults occur, they can surface various
problems, from erratic vehicle operation to warning messages
announced on the instrument cluster, along with decreased vehicle
performance and potential safety deficiencies. In this article, we
will discuss the common causes of automobile network communication
faults and troubleshooting techniques.
32 PTEN OCTOBER 2023 www.VehicleServicePros.com
We'll go over some of the basic methods used in troubleshooting
network problems such as using an ohmmeter to quickly assess
an HSCAN network's wiring connection integrity and how to
go about checking for an intermittent high resistance condition
you suspect the vehicle of having. We'll also discuss how using a
lab scope can be especially useful when inspecting live network
communication signals, as well as some alternate diagnostic
methods utilizing different tools that may prove to be beneficial
not only for troubleshooting but for growing your knowledge on
this topic as well.
Today, the service technician responsible for troubleshooting
network communication problems must possess a unique set of
http://www.VehicleServicePros.com

October 2023

Table of Contents for the Digital Edition of October 2023

EDITOR'S NOTE
NEW PRODUCTS
PEOPLE’S CHOICE AWARD
BEST YOUNG TECH AWARD
DIAGNOSTIC TECH
TOOL BRIEFING
INNOVATION AWARD PROFILE
TOOL REVIEWS
CATEGORY SPOTLIGHT
BIG-TIME BOXES
October 2023 - 1
October 2023 - 2
October 2023 - 3
October 2023 - 4
October 2023 - 5
October 2023 - 6
October 2023 - 7
October 2023 - EDITOR'S NOTE
October 2023 - 9
October 2023 - NEW PRODUCTS
October 2023 - RSC1
October 2023 - RSC2
October 2023 - 11
October 2023 - 12
October 2023 - 13
October 2023 - 14
October 2023 - 15
October 2023 - 16
October 2023 - 17
October 2023 - PEOPLE’S CHOICE AWARD
October 2023 - 19
October 2023 - 20
October 2023 - 21
October 2023 - 22
October 2023 - 23
October 2023 - 24
October 2023 - 25
October 2023 - 26
October 2023 - 27
October 2023 - BEST YOUNG TECH AWARD
October 2023 - 29
October 2023 - 30
October 2023 - 31
October 2023 - DIAGNOSTIC TECH
October 2023 - 33
October 2023 - 34
October 2023 - 35
October 2023 - 36
October 2023 - 37
October 2023 - 38
October 2023 - 39
October 2023 - 40
October 2023 - 41
October 2023 - 42
October 2023 - 43
October 2023 - TOOL BRIEFING
October 2023 - 45
October 2023 - 46
October 2023 - 47
October 2023 - INNOVATION AWARD PROFILE
October 2023 - 49
October 2023 - TOOL REVIEWS
October 2023 - 51
October 2023 - 52
October 2023 - 53
October 2023 - CATEGORY SPOTLIGHT
October 2023 - 55
October 2023 - 56
October 2023 - 57
October 2023 - BIG-TIME BOXES
October 2023 - 59
October 2023 - 60
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