The correction value is close to 128, and the extreme values are 0 and 255.
Adaptive correction of the composition of the working mixture allows you to adjust the injection algorithm as follows. to get a mixture correction value of 128.
Adaptive corrections take 128 as average after initialization (erasing information from memory) and have the following extreme values.
Conditions
Hot engine: coolant temperature above 70°C for F4P engine and 80°C for K4M engine.
Engine speed should not exceed 4000 min-1 for F4P engine and 4640 min-1 for the K4M engine,
Turn off the absorber by disconnecting the wiring harness from the solenoid valve, or plug the fuel supply pipe to the engine.
Pressure ranges covered during the test
There are five pressure ranges to check while driving. These ranges are given by the following calibrations.
Cessation of correction during continuous regulation with a hot engine idling.
If the temperature of the coolant is above 80°C at idle 8 for more than 62 s, the correction parameters are fixed until the end of idle.
After this test, the correction values become valid. The test should be continued on the move, driving under normal conditions at a constant and variable speed for a distance of 5-10 km. After the test, check the correction values. The initial values of 128 should have changed. Otherwise, repeat the test, strictly observing the conditions for its implementation.
Interpretation of the values obtained during the road test
With a lack of fuel (due to dirty injectors, low pressure and fuel supply, etc.), the fuel mixture control parameters are increased so as to get the mixture composition as close to 1 as possible. At the same time, the adaptive mixture composition correction is increased so that the mixture composition correction value fluctuates around 128. With excess fuel, the opposite occurs.