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TM 9-2320-364-20-1
This paragraph covers DDEC III/IV System Troubleshooting. The DDEC III/IV System Index, Table 2-19, lists sections,
subsections and charts associated with the DDEC III/IV system of the PLS truck.
Description
Page
Section I
How To Use This Paragraph
...............................................................................
Section II
Basic Knowledge Required
.................................................................................
A.
Electrical Circuits
..............................................................................................
B.
Use Of Digital Volt-Ohm Meter
...........................................................................
C.
Important Information
........................................................................................
D.
Explanation Of Abbreviations/Terms
...................................................................
E.
General Diagnostic Information
..........................................................................
Section III
Testing The DDEC III/IV System
........................................................................
A.
Tools Needed To Diagnose The System
................................................................
B.
Differences Between DDEC III/IV And DDEC II
..................................................
C.
Reading The Diagnostic Codes
...........................................................................
D.
Clearing Codes
.................................................................................................
E.
Connector Checkout
..........................................................................................
F.
Digital Input/Output Functions
............................................................................
Section IV
Troubleshooting Charts
......................................................................................
A.
The Diagnostic Procedure - Where To Start
..........................................................
B.
DDEC III/IV Diagnostic Codes/What They Mean
.................................................
C.
Beginning Charts
...............................................................................................
START
- First Chart For Diagnosis Of DDEC-III/IV Using DDR
.......................
CEL
- First Chart For Diagnosis Of DDEC-III/IV When No DDR Is Available
D.
Troubleshooting Charts
......................................................................................
Chart 1
- Intermittent Code Or A Symptom And No Codes
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Chart 2
- Engine Cranks But Will Not Start
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Chart 3
- Erratic Performance And No Codes
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