Navistar MaxxForce DT Diagnostic Manual page 127

Actions:
1. When Turbocharger 2 Wastegate Control (TC2WC) is commanded ON, verify Intake Manifold
Pressure (IMP) drops. In this graph, IMP does not drop when TC2WC is commanded ON.
NOTE – MaxxForce® 11 ONLY: AFT regen status stays "Not Active."
NOTE – Turbocharger 1 Wastegate Control (TC1WC) does not affect engine performance and is removed
from post-production engines. If engine is equipped with one, it is not used by the Engine Control
Module (ECM).
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