DIAGNOSTIC MANUAL
Step
Action
Decision
10B
Check for Injection Control Pressure (ICP) system issue. Using
EST with ServiceMaxx™ software, use the playback feature and
graph the following signal values from 0 to 60 MPH Test:
Signal Values:
•
ICP desired
•
ICP
•
Injection Pressure Regulator (IPR) valve control %
Compare snapshot to Graph 3 and associated Graph Analysis
page 54.
Is ICP system operating as per Graph 3 Graph Analysis?
Yes: Go to step 10C
No: Diagnose and repair
ICP system issue (See
Hard Start and No Start
Diagnostics section in
Engine Diagnostic Manual).
After repairs are complete,
retest for original problem.
Step
Action
Decision
10C
Check for Air Management System (AMS) issue. Using EST with
ServiceMaxx™ software, use the playback feature and graph the
following signal values from 0 to 60 MPH Test:
Signal Values:
•
Engine Speed
•
Engine Load
•
Intake Manifold Pressure (IMP)
•
Exhaust Back Pressure (EBP)
•
Accelerator Pedal Position 1 (APP1)
Compare snapshot to Graph 4 and associated Graph Analysis
page 55.
Is AMS operating as per Graph 4 Graph Analysis?
Yes: Go to step 11
No: Diagnose and
repair AMS issue (See
Performance Diagnostics
section in Engine
Diagnostic Manual). After
repairs are complete, retest
for original problem.
22
https://www.truck-manuals.net/