IICL CONTAINER INSPECTORS EXAM 2024 ACTUAL
EXAM COMPLETE ACCURATE EXAM QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) /ALREADY GRADED A+
What is traction control? - ANSWER: Helps the ABS improve vehicle traction by
minimizing wheel slip on the drive axle during acceleration.
What is ABS? - ANSWER: Antilock braking systems are electronic systems that
monitor and control wheel slip during vehicle braking.
What are the components of ABS? - ANSWER: electronic control unit (ECU), wheel
speed sensors, modulator valves, exciter rings
In ABS, what is the function of the electronic control unit (ECU)? - ANSWER:
Processes all ABS info and signal functions. Receives and interprets voltage pulses
generated by the sensor pickup as the exciter teeth pass by, and uses this info to
determine: (a) impending wheel lock, and (b) when/how to activate the ABS
modulator valves.
In ABS, what is the function of the modulator valves? - ANSWER: Regulate air
pressure to the brakes during ABS action. ECU commands mod valve to either
change the air pressure to the brake chamber, or hold the existing pressure.
In ABS, what are the 2 main components of the wheel speed sensors? - ANSWER: (1)
exciter, and (2) pickup
In ABS, what is an exciter? - ANSWER: A ring with notched teeth, also known as
sensor ring, tooth wheel, tone ring, and exciter.
In ABS, what is an pickup? - ANSWER: Commonly called "the sensor" which contains
a wire coil/magnet assembly, which generates pulses of electricity as teeth of the
exciter pass in front of it.
Which pin/wire is the power supply for ground on a 7-way plug? - ANSWER: Pin 1 -
white
Which pin/wire is the power supply for stop and antilock on a 7-way plug? -
ANSWER: Pin 2 - red
Which pin/wire is the power supply for power for electronic control unit (ECU) on a
7-way plug? - ANSWER: Pin 3 - blue
, Which pin/wire is the power supply for identification, front and intermediate
markers, front clearance, rear markers, license, tail and rear clearance on a 7-way
plug? - ANSWER: Pin 4 - brown
Which pin/wire is the power supply for right directional on a 7-way plug? - ANSWER:
Pin 5 - green
Which pin/wire is the power supply for left directional on a 7-way plug? - ANSWER:
Pin 6 - yellow
Which pin/wire is the power supply for ABS warning light on a 7-way plug? -
ANSWER: Pin 7 - green/white
What is the transition area? - ANSWER: Location where the gooseneck meets the
main rails
What is a "horn" on a chassis? - ANSWER: Large gathering structure extending above
the top flange of the front of the chassis. It is a gathering device used to guide
containers lifted on/off chassis, and to restrict forward movement.
What is a kingpin? - ANSWER: Critical structural member and connecting link
between the chassis and the tractor fifth wheel.
What is the inspection criteria for kingpin? - ANSWER: Excessive wear beyond
acceptable limits; chipped, broken, or cracked collar; looseness in upper coupler
construction
What is the required diameter of a kingpin? - ANSWER: Upper section: between 2-
11/16" & 2-7/8"
Lower section: between 1-7/8" & 2"
What is the inspection criteria for the upper coupler plate? - ANSWER: Examine for
gouges from fifth wheel, lubricated with grease, excessive/uneven wear, dishing,
bulging, or distortion upwards. Check for corrosion and/or blockage of drain holes.
What is the inspection criteria for the main rails? - ANSWER: Sight along main rails to
notice deformation (twist, bow, dent, or bend) in framework; examine frame welds
for cracks
What is the deciding factor in repairing main rails? - ANSWER: Rails must be repaired
when deformation influences the ability of a container to be seated properly and
secured to the chassis, or its ability to track properly.
What is the inspection criteria for the landing legs? - ANSWER: Inspect support
mounting brackets for bending and tight bolts; bolt holes on brackets and legs are
same size; missing/damaged bolts replaced; uneven height; out of alignment (out of
plumb condition in all directions)
EXAM COMPLETE ACCURATE EXAM QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) /ALREADY GRADED A+
What is traction control? - ANSWER: Helps the ABS improve vehicle traction by
minimizing wheel slip on the drive axle during acceleration.
What is ABS? - ANSWER: Antilock braking systems are electronic systems that
monitor and control wheel slip during vehicle braking.
What are the components of ABS? - ANSWER: electronic control unit (ECU), wheel
speed sensors, modulator valves, exciter rings
In ABS, what is the function of the electronic control unit (ECU)? - ANSWER:
Processes all ABS info and signal functions. Receives and interprets voltage pulses
generated by the sensor pickup as the exciter teeth pass by, and uses this info to
determine: (a) impending wheel lock, and (b) when/how to activate the ABS
modulator valves.
In ABS, what is the function of the modulator valves? - ANSWER: Regulate air
pressure to the brakes during ABS action. ECU commands mod valve to either
change the air pressure to the brake chamber, or hold the existing pressure.
In ABS, what are the 2 main components of the wheel speed sensors? - ANSWER: (1)
exciter, and (2) pickup
In ABS, what is an exciter? - ANSWER: A ring with notched teeth, also known as
sensor ring, tooth wheel, tone ring, and exciter.
In ABS, what is an pickup? - ANSWER: Commonly called "the sensor" which contains
a wire coil/magnet assembly, which generates pulses of electricity as teeth of the
exciter pass in front of it.
Which pin/wire is the power supply for ground on a 7-way plug? - ANSWER: Pin 1 -
white
Which pin/wire is the power supply for stop and antilock on a 7-way plug? -
ANSWER: Pin 2 - red
Which pin/wire is the power supply for power for electronic control unit (ECU) on a
7-way plug? - ANSWER: Pin 3 - blue
, Which pin/wire is the power supply for identification, front and intermediate
markers, front clearance, rear markers, license, tail and rear clearance on a 7-way
plug? - ANSWER: Pin 4 - brown
Which pin/wire is the power supply for right directional on a 7-way plug? - ANSWER:
Pin 5 - green
Which pin/wire is the power supply for left directional on a 7-way plug? - ANSWER:
Pin 6 - yellow
Which pin/wire is the power supply for ABS warning light on a 7-way plug? -
ANSWER: Pin 7 - green/white
What is the transition area? - ANSWER: Location where the gooseneck meets the
main rails
What is a "horn" on a chassis? - ANSWER: Large gathering structure extending above
the top flange of the front of the chassis. It is a gathering device used to guide
containers lifted on/off chassis, and to restrict forward movement.
What is a kingpin? - ANSWER: Critical structural member and connecting link
between the chassis and the tractor fifth wheel.
What is the inspection criteria for kingpin? - ANSWER: Excessive wear beyond
acceptable limits; chipped, broken, or cracked collar; looseness in upper coupler
construction
What is the required diameter of a kingpin? - ANSWER: Upper section: between 2-
11/16" & 2-7/8"
Lower section: between 1-7/8" & 2"
What is the inspection criteria for the upper coupler plate? - ANSWER: Examine for
gouges from fifth wheel, lubricated with grease, excessive/uneven wear, dishing,
bulging, or distortion upwards. Check for corrosion and/or blockage of drain holes.
What is the inspection criteria for the main rails? - ANSWER: Sight along main rails to
notice deformation (twist, bow, dent, or bend) in framework; examine frame welds
for cracks
What is the deciding factor in repairing main rails? - ANSWER: Rails must be repaired
when deformation influences the ability of a container to be seated properly and
secured to the chassis, or its ability to track properly.
What is the inspection criteria for the landing legs? - ANSWER: Inspect support
mounting brackets for bending and tight bolts; bolt holes on brackets and legs are
same size; missing/damaged bolts replaced; uneven height; out of alignment (out of
plumb condition in all directions)
