Smog Check Manual - Visual Inspection Guide 2023 with complete solution
Air injection; Spark controls; TAC/ACL; EVAP
Which four emissions control systems are visually inspected on gasoline-powered vehicles but not on diesel-powered vehicles?
Underhood emission control label
Inspectors must us...
Smog Check Manual - Visual Inspection Guide 2023 with
complete solution
Air injection; Spark controls; TAC/ACL; EVAP
Which four emissions control systems are visually inspected on gasoline-powered
vehicles but not on diesel-powered vehicles?
Underhood emission control label
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Current emission control application guide
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Emission control repair manuals
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Emission component location guides
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Manufacturer emission control recalls
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Vacuum hose routing diagrams
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
CARB aftermarket parts listings
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Aftermarket parts labels
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Any reliable vehicle manufacturer sources
Inspectors must use all available information necessary to determine the vehicle's
emission control requirements, including but not limited to:
Engine
Some diesel-powered vehicles are equipped with a second or additional emission
control label affixed to the...
Complete and installed in accordance with the vehicle manufacturer's original CA
or Federal certified configuration, or with CARB aftermarket configuration
To pass the visual inspection, the required emissions control systems must be...
Verify whether those parts are CARB approved or exempted
What must the inspector do if a vehicle is equipped with parts that modify the original
emission control configuration?
The vehicle shall fail the visual inspection for being "modified" (EIS) or
"tampered" (OIS)
, If parts that modify the original emissions control configuration are not CARB approved
or exempted, what are the inspection results?
CARB Executive Order (EO) number
What number on the Aftermarket Parts Label can be used to verify CARB approval or
exemption?
Is required for the vehicle undergoing inspection
When performing a visual inspection, inspectors are prohibited from entering "Not
Applicable" for an emission control system that...
Positive Crankcase Ventilation (PCV); Crankcase Depression Regulator (CDR);
Crankcase Ventilation (CCV)
Which crankcase emission controls are visually inspected on diesel vehicles?
Catalytic converter
This is a type of exhaust gas after-treatment system used on diesel vehicles that must
be visually inspected.
Diesel Oxidation Catalyst (DOC or OC)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must
be visually inspected.
NOx adsorber
This is a type of exhaust gas after-treatment system used on diesel vehicles that must
be visually inspected.
Periodic Trap Oxidizer (PTOX)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must
be visually inspected.
Diesel Particulate Filter (DPF)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must
be visually inspected.
Selective Catalytic Reduction (SCR)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must
be visually inspected.
Must be in the original configuration with the same number of devices in place,
unless changes are CARB approved/exempted
What are the conditions required for catalysts, filters, and traps to pass visual
inspection?
Add-On Aftermarket Parts
This vehicle component must be visually inspected as part of the Other Emission
Related Components/Systems category.
Cylinder Heads
This vehicle component must be visually inspected as part of the Other Emission
Related Components/Systems category.
Exhaust Manifolds
This vehicle component must be visually inspected as part of the Other Emission
Related Components/Systems category.
Intake Manifolds
This vehicle component must be visually inspected as part of the Other Emission
Related Components/Systems category.
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