How is EVAP performed in the OBDII drive cycle?
The Evap “bypassing” procedure is described in the following drive cycle. The OBDII Drive Cycle will be performed using a scan tool. Consult the instruction manual for each described function. NOTE: A detailed description of a Powertrain Control Module (PCM) Reset is found in this section, refer to the table of contents.
What are the different types of emission test cycles?
A non-regulatory chassis dynamometer test cycle for heavy-duty vehicles. A transient engine dynamometer cycle for mobile nonroad engines, used for engine emission certification/type approval in the USA, European Union and other countries. Test cycle composed of several steady-state test modes.
How long does a BMW OBDII drive cycle take?
You will now maintain a steady speed of 55mph for 5 minutes. This performs additional diagnostics as well as the catalyst monitor. However, if the battery has been disconnected or the catalyst is marginal, it might take you 5 entire driving cycles to complete. Once again, don’t brake, shift gears, or press the clutch.
How to do BMW OBDII drive cycle for smog check?
You could either drive a whole 200 miles hopefully the OBC is ready or do as BMW dealership had suggested to drive 30 miles, park the car in idle for 30 minutes, and repeat this process for at least 3-4 times. Both of these methods are extremely time consuming but there is another way to get the OBC ready to pass the smog check.
What happens during the drive cycle emissions test?
While the Drive Cycle test is going, the engine computer runs little tests or “readiness monitors” to see if the emissions system is working properly. When a vehicle has an emissions system problem, it almost always triggers a Check Engine or Service Engine Soon Light.
Can a 2002 Mercedes Benz drive cycle be incomplete?
Also, one customer with a 2002 Mercedes was unable to complete the secondary air injection monitor until one evening he allowed his vehicle to idle for 5-20 minutes in his driveway. He then turned off his vehicle and restarted the vehicle the next morning and allowed it to idle for another 5-10 minutes.
Why does check engine light go off before emissions test?
This process was designed to prevent a vehicle from slipping through an emissions test with a known problem. Until 1996, a common tactic was to turn off the Check Engine Light by clearing the code just before an emissions test, without performing the proper repair.
How does the status of your emission systems become ” ready ” again?
How the status of your vehicle’s emission systems becomes “ready” again: Driving the vehicle in a normal fashion may allow your vehicle’s to become “ready”. However, for certain emission systems and certain vehicles, the status returns to “ready” only after driving the vehicle a specific way.