Bmw Evap System Drive Cycle

If you re a newer mechanic or becoming more educated about diagnosing emissions systems via the obd ii diagnosis system you may have heard of the phrase drive cycle a drive cycle is used to test whether repairs to emissions related components were successfully recognized by the powertrain control module or pcm.

Bmw evap system drive cycle.

You will need to do a driving cycle if you have replaced the battery disconnected the battery or cleared the codes after a repair. If you have a 1996 up bmw you have the obd ii diagnostic system that constantly monitors the sensors and solenoids on the engine. Make sure you have between 1 4 and 3 4 fuel in the gas tank. This is the drive cycle for bmw.

Perform this to reset your monitors check to see if the check engine light will come back after a repair or to pass an emi. If readiness status of all monitors do not switch to ready ensure preconditions are met and complete a new drive cycle after the engine has cooled overnight. The evap test will not run while your bmw s gas tank is full or near empty start the engine. The ecu is testing the system for evap leaks.

This drive cycle can be used to determine if the readiness code for this monitor will. A drive cycle is one of the methods used by a vehicle s powertrain control module pcm to determine whether an emissions system repair was performed successfully. It involves a special test drive that duplicates the scenario of a person starting the car and making a short freeway trip as if driving to work. Evap system monitor drive cycle instructions do not turn off the ignition switch during the test procedure.

Idle the engine in drive for two and. Drive cycles can be difficult to follow under normal driving conditions. End of drive cycle. The bmw m series drive cycle drive trace requires driving both highway and city speeds.

It will suspend the drive cycle if it is not happy with any aspect of battery performance and or charging system performance.