Maxxforce; And 15 Servicemaxx™ Snapshots; Graph 1: Air Management System Test (Good) - Navistar MaxxForce DT Diagnostic Manual

DIAGNOSTIC MANUAL

MAXXFORCE

10.1. GRAPH 1: AIR MANAGEMENT SYSTEM TEST (GOOD)

NOTE – Colors in the graphs are used for clarity only and will not necessarily match the colors you will
see in your ServiceMaxx™ snapshots
1. Engine speed (rpm) [Green]
2. Intake Manifold Pressure (IMP)
(psi) [Orange]
Figure 26 Graph 1: Air Management System Test (Good)
Graph Analysis:
This graph shows normal operation of the Air Management System (AMS) during the Air Management Test
(AMT). The AMT does not give pass or fail results. It only allows the user to validate the AMS by monitoring
the effects each actuator has on Intake Manifold Pressure (IMP). IMP is normally between 8 psi (55 kPa) to 13
psi (90 kPa) on engine ramp up during AMT. If Turbocharger 2 Wastegate Control (TC2WC) is not operating as
designed, boost pressure will not respond to changes in engine load. Excess soot will then be generated by
the engine causing frequent regeneration of the aftertreatment system.
120
® 11, 13 AND 15 SERVICEMAXX™ SNAPSHOTS
https://www.truck-manuals.net/
3. Turbocharger 2 Wastegate Control
(TC2WC) (percent) [Blue]