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1. The reference voltage to sensors on a computer-controlled
vehicle is ___ volts.
a.
1
b.
2
c.
12
d.
5
2. A spark test shows no spark from the coil when the engine is
cranked. Which should be checked first?
a. rotor
b. distributor
cap
c. power to coil
d. spark plug wires
3. Technician A says that the Hall Effect pickup is a device
that uses a voltage to produce a digital signal for
the ECA.
Technician B says that the Hall Effect pickup uses
a magnet.
Who is right?
a. A only
b. B only
c. Both A
and B
d. Neither
A nor B
4. Technician A says that the Hall Effect pickup is not used on
electronic or computerized ignition systems. Technician
B
says the Hall Effect pickup is used as a sensing device
on
the PIP or crankshaft position sensor.
Who is right?
a. A only
b. B only
c. Both A and B
d. Neither A nor
B
5. Which of the following electronic switching devices has a
reluctor with wide shutters inside of teeth?
a. magnetic
pulse generator
b. metal
detection sensor
c. Hall Effect
sensor
d. all of
the above
6. On many electronic ignition systems a crankshaft sensor
replaces the
a. distributor
pickup coil
b. ignition
module
c. ignition
coil
d. camshaft
sensor
7. Which of the following can the computer control?
a. spark advance
b. air/fuel ratio
c. spark timing
d. all of the above
8. Computerized ignition systems are equipped with ___ to
monitor engine conditions.
a. test connectors
b. triggering
devices
c. output
drivers
d. sensors
9. Ignition triggering devices are operated by the movement of
the
a. distributor
shaft
b. crankshaft
c. camshaft
d. all of
the above depending on design
10. What is another name for the engine control computer?
a. ECM
b. logic
module
c. ECA
d. all of
the above
11. Technician A says that when the coil fires on a DIS system,
it actually fires two spark plugs at the same
time.
Technician B says that when the DIS system fires,
both
cylinders are on the compression stroke at the
same time.
Who is right?
a. A only
b. B only
c. Both A
and B
d. Neither
A nor B
12. All of the following are output actuators except
a. distributor
b. fan relay
c. ignition
module
d. injectors
13. The spark timing on a computer-controlled ignition system is
timed by
a. centrifugal
weights
b. computer
or electonic control module
c. vacuum
advance
d. springs
on the weights
14. Technician A says an ignition pulse generator is a spinning
reluctor (rotor) with a stationary coil (stator).
Technician B says that when a soft iron core
is passed over
a semiconductor, it creates electricity.
Who is right?
a. A only
b. B only
c. both A
and B
d. neither
A nor B
15. An ignition Hall effect sensor magnetically switches
electricity to the
a. base of
the switching transistor
b. ballast
resistor
c. rotor
d. pickup
coil
16. On a computer controlled system which sensors determine
spark advance?
a. TPS and
02
b. MAP and
02
c. coolant
temp. and RPM
d. none of
the above
17. Technician A says that A DIS systems use one coil for each
spark plug. Technician B says that some systems
use one
coil for every two spark plugs.
Who is correct?
a. A only
b. B only
c. Both and
B
d. Neither
A nor B
18. A distributor optical sensor creates an electrical signal
and sends it to the
a. starter
relay
b. ignition
coil
c. distributor
d. ignition
module
19. During a spark test, no voltage is produced by the coil
during cranking. Which of the following should
be checked
first?
a. spark
plugs
b. ignition
module
c. cap
d. rotor
20. All of the following are true about electronic modules
except:
a.
modules control the coil from a triggering device
b.
current flows into the module when the ignition
switch is on
c.
the typical module contains only one moving part
d.
the module can be located anywhere in the engine
compartment
21. A vehicle is showing closed TPS, high manifold vacuum, and
an engine speed of 2500 rpm.
What conditions would it most
likely be operating under?
a. acceleration
b. idle
c. deceleration
d. low speed
22. In a DIS system, Technician A says two plugs fire at the
same time, with one wasting the spark on the
exhaust stroke.
Technician B says one plug fires in the normal
direction,
and the other fires in reversed polarity. Who
is right?
a. A only
b. B only
c. Both A
and B
d. Neither
A nor B
23. How is dwell adjusted on an electronic ignition system?
a. moving
the trigger reluctor
b. turning
an adjuster on the module
c. moving
the pickup coil plate
d. dwell
cannot be adjusted
24. When timing is controlled by the onboard computer there is
no:
a. vacuum
advance
b. centrifugal
advance
c. dwell
setting
d. all of
the above
25. A distributor pickup coil (pulse generator) produces
electricity and sends it to the
a. ignition
module
b. starter
relay
c. distributor
d. coil
KEY - QUIZ 4