Two technicians are discussing exhaust gas recirculation diagnostics. Technician A says that if any data are out of range or irrational when compared to other data, then the malfunction indicator lamp (MIL) will illuminate. Technician B says that several variables are monitored by the OBDII system of diesel EGR with the key off. Who is right?
A)A only"
B)B only"
C)Both A and B
D)Neither A nor B"

Question

Quizplus · Accepted Answer

Technician A is correct because the MIL will illuminate if the OBDII system detects data that is out of range or irrational. Technician B is incorrect because the OBDII system does not monitor variables with the key off.

Two Technicians Are Discussing Exhaust Gas Recirculation Diagnostics