STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
C. START - FIRST CHART FOR DIAGNOSIS OF DDEC-III USING DDR (Cont'd)
START-3
Read All Codes
Using DDR
Plug DDR into DDL
Codes 52, 110, 175/3,
Follow appropriate diagnostic
Connector.
174/3, or 190/0
charts for code(s) received.
(See Table of Contents)
Read all inactive codes by
Any codes except
Go to START-4.
selecting inactive codes
52,110,175/3,
on DDR.
174/3, or 190/0.
No Codes.
Go to Chart 1, page 3-345.57.
DDR display reads
Go to Chart 7, page 3-345.99.
"NO DATA BEING
RECEIVED FROM DATA
LINK” or "DDEC SYSTEM
NOT RESPONDING".
DDR display is
Go to START-9.
blank or random.
START-4
Attempt to
Make
Codes Active
*SEE NOTE BELOW*
Clear codes by selecting
Engine will
Go to Chart 2, page 3-345.63
CODE ERASE on the DDR.
not start.
Attempt to start and run
the engine.
Try to get the "Check Engine" light
"Check Engine"
Read Active Codes on DDR
on by:
light is on.
while light is on and follow
-warming up the engine.
The appropriate diagnostic
-slowly changing the RPM from
Chart on page 3-345.1.
idle to no load speed.
Run engine for 1 minute or until
"Check Engine",
Problem may be Intermittent -
"Check Engine" light comes on.
light is off. Check
See Chart 1, page 3-345.61,
Step
engine flashes briefly.
C1-2.
Go to START-5.
*NOTE:
If a potential engine damaging Code (ie. 100/1) exists monitor that parameter
when running engine.
Change 3 3-345.43
