VEHICLE MANAGEMENT SYSTEMS
EXAM QUESTIONS WITH COMPLETE
SOLUTIONS 2026
If an oxygen sensor indicates an AFR(rich AFR) which could cause the condition? -
ANSWERSHigh Fuel System Pressure
Which OBDII codes signify an Idle Control Circuit - ANSWERSP0505
While manually performing an OBDII drive cycle test, which system will be tested during
2 1/2 mins if idling after start? - ANSWERSCanister Purge, O2 system and Cat
Converter will be tested later because it require heat to properly read the system.
OBD II equipped vehicle has MIL but will not communicate with the scan tool. What
would cause the issue? - ANSWERSNon-compliant CAN scan tool
Which publication contains procedures for retrieving diagnostic trouble trees? -
ANSWERSService Manual
Which on board controllers should be checked for information on the power window? -
ANSWERSBCM
On boad diagnostic system publishes U0029, Vehicle communication Bus a
Performance, which tool should you use to test networking wiring? - ANSWERSHigh
Speed Lab Scope
Oxygen sensor reading of 450mV is an average value on an engine at normal operating
temp and at closed loop. what will happen when a vacuum leak occurs? -
ANSWERSVoltage reading will go down, vacuum leak will cause more Oxygen in the
exhaust and lean condition
Which of the following input sensors should produce nearly the same reading on a
vehicle at the moment of start up after being shut down for 12 hours? - ANSWERSECT
and IAT
how many OBD II pin connector has ? - ANSWERS16
Minimum number of freeze frames captured by an OBD II after it has set? -
ANSWERS1
EXAM QUESTIONS WITH COMPLETE
SOLUTIONS 2026
If an oxygen sensor indicates an AFR(rich AFR) which could cause the condition? -
ANSWERSHigh Fuel System Pressure
Which OBDII codes signify an Idle Control Circuit - ANSWERSP0505
While manually performing an OBDII drive cycle test, which system will be tested during
2 1/2 mins if idling after start? - ANSWERSCanister Purge, O2 system and Cat
Converter will be tested later because it require heat to properly read the system.
OBD II equipped vehicle has MIL but will not communicate with the scan tool. What
would cause the issue? - ANSWERSNon-compliant CAN scan tool
Which publication contains procedures for retrieving diagnostic trouble trees? -
ANSWERSService Manual
Which on board controllers should be checked for information on the power window? -
ANSWERSBCM
On boad diagnostic system publishes U0029, Vehicle communication Bus a
Performance, which tool should you use to test networking wiring? - ANSWERSHigh
Speed Lab Scope
Oxygen sensor reading of 450mV is an average value on an engine at normal operating
temp and at closed loop. what will happen when a vacuum leak occurs? -
ANSWERSVoltage reading will go down, vacuum leak will cause more Oxygen in the
exhaust and lean condition
Which of the following input sensors should produce nearly the same reading on a
vehicle at the moment of start up after being shut down for 12 hours? - ANSWERSECT
and IAT
how many OBD II pin connector has ? - ANSWERS16
Minimum number of freeze frames captured by an OBD II after it has set? -
ANSWERS1
