ase a6 exam study guide test bank
actual full solution
◍ A- since voltage is supplied to the indicator light when the ignition
switch is on, the indicator light will normally light when the oil
pressure switch supplies a ground to complete the circuit. if a short to
ground occurs between the indicator light and the oil pressure switch,
the light will be on whenever the ignition switch is in the ON
position. An open switch prevent the light from coming on.. Answer:
16. The oil pressure light on a vehicle dashboard stays on whenever
the engine is running. The oil pressure has been checked with a
mechanical gauge and it is within specs. Tech A says that the circuit
between the indicator light and the pressure switch could be
grounded. Tech B says that an open in the pressure switch itself could
be the cause. Who is right?
A. Tech A only
B. tech B only
C. Both A and B
D. Neither A or B
◍ D- Neither Tech is right. If a jumper wire is connected between the
battery and the solenoid S terminal and the engine cranks, there is a
problem in the starter control circuit. If the solenoid makes a clicking
sound, it is operating properly and the problem may be with the
starter. If no sound is heard, the solenoid is defective and should be
replaced.. Answer: 17. Nothing happens when the ignition key is
turned to the START position in a vehicle with a good battery. Tech A
says this if a clicking sound is heard when a jumper wire is connected
between the battery and the solenoid "S" terminal, a problem exists in
,the starter control circuit. Tech B says that if a jumper wire is
connected between the battery and the solenoid "S" terminal and there
is no sound, the starter is defective. Who is right?
A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
◍ C- Both techs are right. A circuit breaker will disconnect the circuit
if the circuit has a higher than normal current flow, which can be
caused by a short in the circuit of a binding of the wiper linkage..
Answer: 18. A vehicle continues to trip the windshield wiper circuit
breaker. Tech A says the cause could be a short circuit. Tech B says
that the cause could be binding wiper linkage. Who is right?
A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
◍ D- a battery with a 12.1 volt reading is undercharged. Tech B is
wrong because if the indicator is yellow on a sealed maint free
battery, it means that the fluid level is below the level of the
hydrometer. The battery should not be charged and should be
replaced.. Answer: 19. Tech A says that a battery with an open circuit
voltage of 12.1 Volts is fully charged. Tech B says that if the indicator
on a sealed maintenance free battery is yellow, the battery should be
charged. Who is right?
, A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
◍ B- When performing a current draw test using an ammeter, a
decrease in circuit resistance will cause a reading greater than what
was specified.. Answer: 20. When performing a current draw test
using an ammeter, a reading greater than that which was specified
would indicate:
A. Excessive circuit resistance
B. A decrease in Circuit resistance
C. An open circuit
D. a decrease in circuit voltage
◍ D- neither tech is right. An analog meter with a low input
resistance should only be used for non computer type circuits; a test
light should never be used to diagnose sensor circuitry.. Answer: 21.
Tech A says that using a 20,000 ohm/volt analog meter is a good
choice for ECM circuit testing. Tech B says that careful use of a test
light can determine the condition of a Throttle position sensor. Who is
right?
A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
actual full solution
◍ A- since voltage is supplied to the indicator light when the ignition
switch is on, the indicator light will normally light when the oil
pressure switch supplies a ground to complete the circuit. if a short to
ground occurs between the indicator light and the oil pressure switch,
the light will be on whenever the ignition switch is in the ON
position. An open switch prevent the light from coming on.. Answer:
16. The oil pressure light on a vehicle dashboard stays on whenever
the engine is running. The oil pressure has been checked with a
mechanical gauge and it is within specs. Tech A says that the circuit
between the indicator light and the pressure switch could be
grounded. Tech B says that an open in the pressure switch itself could
be the cause. Who is right?
A. Tech A only
B. tech B only
C. Both A and B
D. Neither A or B
◍ D- Neither Tech is right. If a jumper wire is connected between the
battery and the solenoid S terminal and the engine cranks, there is a
problem in the starter control circuit. If the solenoid makes a clicking
sound, it is operating properly and the problem may be with the
starter. If no sound is heard, the solenoid is defective and should be
replaced.. Answer: 17. Nothing happens when the ignition key is
turned to the START position in a vehicle with a good battery. Tech A
says this if a clicking sound is heard when a jumper wire is connected
between the battery and the solenoid "S" terminal, a problem exists in
,the starter control circuit. Tech B says that if a jumper wire is
connected between the battery and the solenoid "S" terminal and there
is no sound, the starter is defective. Who is right?
A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
◍ C- Both techs are right. A circuit breaker will disconnect the circuit
if the circuit has a higher than normal current flow, which can be
caused by a short in the circuit of a binding of the wiper linkage..
Answer: 18. A vehicle continues to trip the windshield wiper circuit
breaker. Tech A says the cause could be a short circuit. Tech B says
that the cause could be binding wiper linkage. Who is right?
A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
◍ D- a battery with a 12.1 volt reading is undercharged. Tech B is
wrong because if the indicator is yellow on a sealed maint free
battery, it means that the fluid level is below the level of the
hydrometer. The battery should not be charged and should be
replaced.. Answer: 19. Tech A says that a battery with an open circuit
voltage of 12.1 Volts is fully charged. Tech B says that if the indicator
on a sealed maintenance free battery is yellow, the battery should be
charged. Who is right?
, A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
◍ B- When performing a current draw test using an ammeter, a
decrease in circuit resistance will cause a reading greater than what
was specified.. Answer: 20. When performing a current draw test
using an ammeter, a reading greater than that which was specified
would indicate:
A. Excessive circuit resistance
B. A decrease in Circuit resistance
C. An open circuit
D. a decrease in circuit voltage
◍ D- neither tech is right. An analog meter with a low input
resistance should only be used for non computer type circuits; a test
light should never be used to diagnose sensor circuitry.. Answer: 21.
Tech A says that using a 20,000 ohm/volt analog meter is a good
choice for ECM circuit testing. Tech B says that careful use of a test
light can determine the condition of a Throttle position sensor. Who is
right?
A. Tech A only
B. Tech B only
C. Both A and B
D. Neither A or B
