TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING
E. CODE 7X (X = 1 to 6) - INJECTOR RESPONSE TIME TOO SHORT
NOTE — This chart is only to be used if:
1) All basic mechanical checks and physical inspectionshave been performed with no problem found, and
2) Diagnosis of DDEC-II was started at step Start-1 (page 3-121) and you have now been referred here.
7X.1 General System
Checks
. Check if any of the following
problems are evident:
Charging system problems
(loose alternator belt, etc.)
or a bad ground(s),
page 4-154.
7X-30 Verify Repairs
l Turn ignition off.
l Reconnect all connectors.
l Turn ignition on.
l Clear codes.
. Note status of “’Check Engine”
light.
l If "Check Engine” light does not
stay on, start and run engine until
at operating temperature or until
the “Check Engine” light comes
on.
l Read historical codes.
RESULT
I
WHAT TO DO NEXT
Problem found.
Repair, page 4-154.
Then go to 7X-30.
No problems found.
Go to 7X-2.
RESULT
WHAT TO DO NEXT
Code 25 (no codes).
Repairs are complete.
Code 7X (and
All system diagnostics are
any other codes).
complete. Please review this
section from the first step to find
the error.
Any other codes
Go to START-1, page 3-121,
except Code 7X.
to service other codes.
3-330
