Section 4
TM 9-2320-363-20-1
TROUBLESHOOTING CHARTS
C. START. FIRST CHART FOR DIAGNOSIS OF DDEC-II USING DDR (Cont’d.)
STEP/SEQUENCE
START-5 Read All Codes
Again
. Read historical codes (MODE 02)
on DDR.
START-6 Read Codes on
the “Check
Engine” Liqht
• Unplug the DDR.
• Short pin A to pin M on the 12 pin
DDL connector.
• Read codes flashing out on the
"Check Engine” Light.
START-7 Intermittent
Check
• Note whether flashing “Check
Engine” Light is reading a valid
RESULT
WHAT TO DO NEXT
code or if it’s just erratic.
Follow appropriate diagnostic
charts for code(s) received.
(See Index on page 3-101).
Go to Chart 1, page 3-136.
Go to Chart 7, page 3-177.
Go to START-9.
To diagnose codes, go to CEL-3
(page 3-131 ). To service DDR
system, go to C7-4 (page 3-177).
Go to Chart 6, page 3-173.
GO to START-8.
Go to Chart 1, page 3-136.
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