Question

on - board diagnostic (obd) systems help the service tech do all of following except:

a. work more efficiently.

b. determine exactly where faults exist.

c. take the guesswork out of diagnosing vehicle problems.

d. access data for todays sophisticated vehicles.

Explanation:

On - board diagnostic (OBD) systems assist service technicians in working more efficiently (a), taking the guesswork out of diagnosing vehicle problems (c), and accessing data for sophisticated vehicles (d). However, they do not determine exactly where faults exist. Fault location often requires further inspection and testing beyond what the OBD system provides.

Answer:

B. Determine exactly where faults exist.