424 Section 4 Computer Control Technology
9. An automobile’s oxygen sensor output
needs to be checked. Technician A uses
a digital voltmeter to check this sensor’s
output. Technician B uses an analog
ohmmeter to check this sensor’s output.
Who is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
10. An oxygen sensor tested faulty and must
be replaced. Technician A says to use a
sealant that is safe for oxygen sensors on the
threads. Technician B says to use a sensor
socket to prevent sensor damage. Who is
right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.