OBDII Drive Cycles

Which one of the following Monitors relies on Samples to determine to condition of the system?

• Oxygen Sensor

• Air Fuel Sensor

• EVAP System

• Catalyst Monitor

• Exhaust Gas Reciculation

Answer explanation

The EGR monitor test performs passive tests called samples. Small samples are taken so the driver does not feel the opening and closing of the EGR.

When preparing to run the EVAP Monitor, for which manufacturer should the Fuel Temperature be checked before starting?

• Audi

• FORD

• NISSAN

• Toyota

In most cases, which Monitor runs not long after a cold startup?

• O2 Heater

• Oxygen Sensor

• EVAP

• Catalyst

The Catalyst Monitor measurement that adds up the voltage changes of the rear O2 per unit of time is the:

• Switch Ratio

• Index Ratio

• Time Delay

• LOCUS Length

Technician A says running of the EVAP Monitor requires a load on the vehicle, actual speed is not important. Technician B says running the EVAP Monitor requires only the correct vehicle speed range. Who is correct?

• Technician A only

• Technician B only

• Both Technician A and B

• Neither Technician A nor B