Deck 88: Scan Tools and Engine Performance Diagnosis

Question 1

Which tool should be used on Ford OBD I systems to retrieve DTCs if the STAR tester is NOT available?

A)Continuity tester
B)Digital voltmeter
C)Analog voltmeter
D)None of these are correct

Answer 1

Analog voltmeter

Question 2

Which pins of the DLC should be connected in order to retrieve "flash" codes from a GM OBD I PCM?

A)A and C
B)D and E
C)A and D
D)A and B

Answer 2

A and B

Question 3

What is the first step of the diagnosis process?

A)Retrieve the diagnostic trouble codes
B)Verify the problem
C)Check for technical service bulletins
D)Look at scan tool data

Answer 3

Verify the problem

Question 4

Which step should be performed LAST when diagnosing an engine performance problem?

A)Verifying the repair
B)Checking for any technical bulletins
C)Checking for any stored diagnostic trouble codes
D)Performing a thorough visual inspection

Question 5

The preferred method to clear diagnostic trouble codes (DTCs) is to ________.

A)Use a scan tool
B)Cycle the ignition key on and off 40 times
C)Disconnect the negative battery cable for 10 seconds
D)Remove the computer (PCM) Power feed fuse