Question 1
NOx readings at idle should be less than ________.
◦ 100 ppm
◦ 10 ppm
◦ 1 ppm
◦ None of these is correct
Question 2
OBD-II equipped vehicles are required to turn on the malfunction indicator lamp if the system has detected an exhaust emission level that is ________ the FTP limit.
◦ 1.5 times or higher than
◦ The same as
◦ 1.5 times less than
◦ None of these