DIAGNOSTIC MANUAL
Step
Action
Decision
7
Check for a failed Air Management System (AMS) actuator.
1.
Using Electronic Service Tool (EST) with
ServiceMaxx™ software, go to Tests > Load
Test Specific Session and verify Load Test
Specific Session is unchecked.
2.
Go to Sessions > Performance and select the
record snapshot icon from the toolbar.
3.
Go to Tests > KOER Tests > Air Management
Test.
When Air Management Test is complete, stop recording.
Use the playback feature in ServiceMaxx™, and graph the
following signal values:
Signal Values:
•
Engine Speed
•
Intake Manifold Pressure (IMP)
•
Turbocharger 2 Wastegate Control (TC2WC)
Does snapshot match Graph 1 or Graph 2 page 120?
Graph 1: Go to step 8A
Graph 2: Diagnose and repair failed
actuator (See Performance Diagnostics
section in Engine Diagnostic Manual).
After repairs are complete, retest for
original problem.
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