VEHICLE COMMUNICATION SYSTEM
EXAM STUDY GUIDE 2025/2026 |
COMPLETE QUESTIONS | VERIFIED
ANSWERS | GRADED A + | PASS
GUARANTEED | RECENT UPDATE
What electrical architecture requires the use of the MOPAR diagnostic pod (MPD)
for diagnostics? - ANSWER Atlantis-high
Which of the following scan tool functions are prevented if a security gateway
(SGW) becomes locked? select all that apply. - ANSWER start an actuator
Run a system test
flash program a module
With the bus active and no faults present, what voltages should be measured on
CAN-C(-)? - ANSWER approximately 1.8v
What Atlantis vehicles use splice block connectors on their CAN buses? select all
that apply. - ANSWER ga alfa glulia
mp jeep compass
What are the key differences between CAN-FD and CAN-C? select all that apply.
- ANSWER flexible bit rates
,larger bias voltage
true or false? A short to ground on CAN-B(+) will ALWAYS prevent
communication from occurring on the CAN-B bus. - ANSWER false
true or false? wiTECH 2.0 is compatible with legacy architectures and should be
used for diagnosing their networks. - ANSWER false
What is the normal operation speed of most Automotive Ethernet networks? -
ANSWER 100 Mbps
With the bus active and no faults present, what Voltages should be measured on
CAN-B(+)? - ANSWER approximately 4.8v
The security gateway (SGW) was introduced in what model year vehicles? -
ANSWER 2018
Which of the following communication networks is a single-wire network? -
ANSWER LIN
Which diagnostic software and scan tool should be used to diagnose legacy
vehicle architectures? - ANSWER wiTECH 1.0 with the enhanced DRB
emulator software
What WiTECH function is best suited for testing intermittent communication
faults? - ANSWER loss of comm test
,Which diagnostic strategy can be used while performing the loss of comm test to
help isolate intermittent concerns? - ANSWER perform a wiggle test on the
harness and connectors
What type of fault could be indicated when all modules on a SINGLE bus appear
as unresponsive on the wiTECH topology? select all that apply. -
ANSWER select all
Which of the following faults could cause ALL of the modules to appear as
unresponsive on the wiTECH topology? - ANSWER failed SGW
shorted diagnostic CAN circuits
Which diagnostic strategy can be used while performing the Loss of Comm Test to
help isolate intermittent concerns? - ANSWER Do not pull the fuse to each
module
The Security Gateway (SGW) was introduced in what model year vehicles? -
ANSWER 2018
With the bus active and no faults present, what voltages should be measured on
CAN-C (+)? - ANSWER 2.6V-3.5V
True or False? A short to ground on CAN-B (+) will ALWAYS prevent
communication from occurring on the CAN-B bus. - ANSWER Not True
, Which resource should be used first for troubleshooting DRB III Emulator
concerns? - ANSWER Not STAR Support Center
Not Service Library
WiTech Knowledge Base
Which of the following communication networks is a single-wire network? -
ANSWER Not Automotive Ethernet
Legacy Networks (ALDL Networks)
CAN-C is being measured.
What should Meter A display based on the fault shown? - ANSWER 0.0V
High-speed CAN bus - ANSWER Fast communication network for vehicle
modules.
Legacy Network - ANSWER Older vehicles using early serial communication
protocols.
Peripheral Component Interconnect (PCI) - ANSWER Communication protocol
used in Legacy networks.
PowerNet - ANSWER Architecture using vehicle configuration data for
programming.
EXAM STUDY GUIDE 2025/2026 |
COMPLETE QUESTIONS | VERIFIED
ANSWERS | GRADED A + | PASS
GUARANTEED | RECENT UPDATE
What electrical architecture requires the use of the MOPAR diagnostic pod (MPD)
for diagnostics? - ANSWER Atlantis-high
Which of the following scan tool functions are prevented if a security gateway
(SGW) becomes locked? select all that apply. - ANSWER start an actuator
Run a system test
flash program a module
With the bus active and no faults present, what voltages should be measured on
CAN-C(-)? - ANSWER approximately 1.8v
What Atlantis vehicles use splice block connectors on their CAN buses? select all
that apply. - ANSWER ga alfa glulia
mp jeep compass
What are the key differences between CAN-FD and CAN-C? select all that apply.
- ANSWER flexible bit rates
,larger bias voltage
true or false? A short to ground on CAN-B(+) will ALWAYS prevent
communication from occurring on the CAN-B bus. - ANSWER false
true or false? wiTECH 2.0 is compatible with legacy architectures and should be
used for diagnosing their networks. - ANSWER false
What is the normal operation speed of most Automotive Ethernet networks? -
ANSWER 100 Mbps
With the bus active and no faults present, what Voltages should be measured on
CAN-B(+)? - ANSWER approximately 4.8v
The security gateway (SGW) was introduced in what model year vehicles? -
ANSWER 2018
Which of the following communication networks is a single-wire network? -
ANSWER LIN
Which diagnostic software and scan tool should be used to diagnose legacy
vehicle architectures? - ANSWER wiTECH 1.0 with the enhanced DRB
emulator software
What WiTECH function is best suited for testing intermittent communication
faults? - ANSWER loss of comm test
,Which diagnostic strategy can be used while performing the loss of comm test to
help isolate intermittent concerns? - ANSWER perform a wiggle test on the
harness and connectors
What type of fault could be indicated when all modules on a SINGLE bus appear
as unresponsive on the wiTECH topology? select all that apply. -
ANSWER select all
Which of the following faults could cause ALL of the modules to appear as
unresponsive on the wiTECH topology? - ANSWER failed SGW
shorted diagnostic CAN circuits
Which diagnostic strategy can be used while performing the Loss of Comm Test to
help isolate intermittent concerns? - ANSWER Do not pull the fuse to each
module
The Security Gateway (SGW) was introduced in what model year vehicles? -
ANSWER 2018
With the bus active and no faults present, what voltages should be measured on
CAN-C (+)? - ANSWER 2.6V-3.5V
True or False? A short to ground on CAN-B (+) will ALWAYS prevent
communication from occurring on the CAN-B bus. - ANSWER Not True
, Which resource should be used first for troubleshooting DRB III Emulator
concerns? - ANSWER Not STAR Support Center
Not Service Library
WiTech Knowledge Base
Which of the following communication networks is a single-wire network? -
ANSWER Not Automotive Ethernet
Legacy Networks (ALDL Networks)
CAN-C is being measured.
What should Meter A display based on the fault shown? - ANSWER 0.0V
High-speed CAN bus - ANSWER Fast communication network for vehicle
modules.
Legacy Network - ANSWER Older vehicles using early serial communication
protocols.
Peripheral Component Interconnect (PCI) - ANSWER Communication protocol
used in Legacy networks.
PowerNet - ANSWER Architecture using vehicle configuration data for
programming.
