Theory of Operation

This monitor can detect a large leak located anywhere between the Turbocharger Compressor outlet and the Intake Manifold. This fault will be set only when three conditions occur together. The first condition is that there is a large difference between actual and expected exhaust pressure. The second condition is that the system is not meeting the charge flow command. The third condition is that there is low boost pressure. The monitor looks for all three conditions to occur prior to setting the fault code. This fault code is a single trip MIL. When active, this fault will disable the regeneration modes.