Why do I need to do a drive cycle?
The purpose of the drive cycle is to run your vehicle’s onboard diagnostics. This, in turn, allows monitors to operate and detect potential malfunctions of your vehicle’s emission system. The correct drive cycle for your vehicle can vary greatly, depending on the vehicle model and the monitors that need to be reset.
How do you complete a drive cycle Honda?
Go up to about 35 to 40 mph a few times and then maintain a city speed of 25 mph before slowing down to stop. Again, don’t roll through the stop and make sure to accelerate normally. Pull in to a parking place and let the engine idle for one to two minutes and then shut it off.
How many drive cycles does it take to turn off a mil?
The PCM can perform this test once during the drive cycle. As I discussed earlier, most emissions-related DTCs take at least two drive cycles to set, so it stands to reason it will take at least two passes to turn off the MIL. Keep in mind the second drive cycle will not be complete until you turn off the ignition.
Does a drive cycle have to be continuous?
Continuous monitors are different in design from the non-continuous ones. Some monitors require that the car follows a predefined drive cycle routine. Some require two drive cycles because of the need for a cool down and warm up periods between. Each emission monitor can have different requirements for the conditions.
How many drive cycles does it take to clear a permanent code?
You’ll need to complete three of these cycles (from cold start if applicable) to successfully clear the code. After the monitor runs three times with no problems the code will clear and you’ll be happy (confirm this, though).
How do you perform a basic drive cycle?
Here are step-by-step instructions on how to perform a basic, yet very effective, drive cycle that will complete the readiness monitors for your vehicle’s emissions control system. Have the fuel tank between 30 and 70 percent full. Some systems, especially the EVAP system, need to have a specific level of fuel in order for the tests to be trusted.
What should I do if my drive cycle won’t work?
Also, if the battery is weak or undercharged, some of the most important tests will never run. The vehicle must sit overnight, or for at least eight hours, in an environment that is less than 90° F. The engine temperature needs to match the air temperature in order to establish an accurate baseline for the testing.
What do you need to know about OBD II drive cycle?
General Motors (specific) OBD II Drive Cycle. Performing a GM OBDII Driving cycle: Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 122 F (50 C) and within 11 F (6 C) of the ambient air temperature at startup.
How to decelerate a General Motors OBDII drive cycle?
Decelerate with using the brake [or the clutch!] by coasting down to 20 MPH or less, then stop the vehicle. Allow the engine to idle for 10 seconds, turn the key off, and wait one minute. General Motors (specific) OBD II Drive Cycle Performing a GM OBDII Driving cycle: Cold Start.