EGR Adaptive Learn Matrix

Range 0-15:
The Adaptive Learn Matrix (ALM) bases itself on Mass Air Flow (MAF) to adjust the EGR control vacuum. As backpressure or other system variations increase over the life of the vehicle the ALM will trim the EGR control vacuum to compensate. The ALM has sixteen cells in which each cell covers a range of engine speed (RPM) and load (mm3).