How do mechanics conduct the emissions inspection?
To conduct the additional test of the OBDII, the mechanic uses the OBDII cable to connect the NHOST equipment to the OBDII diagnostic link connector (DLC) on the vehicle. A vehicle will be rejected from the OBDII test if: • The DLC on the vehicle is obstructed, missing or broken. • The OBDII malfunction indicator light (MIL) on the vehicle does not illuminate when the ignition is set to the ON position and the engine is not in operation, (KOEO). • The MIL remains illuminated when the engine is in operation, (KOER). • The OBDII readiness monitors on the vehicle report that the OBDII system is “Not-Ready” for the test • If the system reports “Non-Communication” when the DLC is connected to the vehicle and the engine is running.
