STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
D. CHART 5 CHECK ENGINE" LIGHT ON AND NO ACTIVE CODE ON DDR (Cont'd)
C 5-5
Check ECM
Connectors
Turn ignition off.
Terminals
Reprogram ECM. Then to go
Check terminals at vehicle
and connectors
C5-30.
harness connectors (both ECM
are okay.
and harness side) for damage;
bent, corroded and unseated pins
Problem found.
Repair terminals/connectors.
or sockets.
Then go to C5-30.
Check terminals in connector to
be sure B1 is wire #419 and B3
is wire #439.
C 5-30
Verify Repairs
Turn ignition off.
"Check Engine"
Repairs are complete.
Reconnect all connectors.
light comes
Turn ignition on.
on for up to
Clear codes.
5 seconds,
Turn ignition off.
then goes out.
Turn Ignition on while at same
time observing "Check Engine"
"Check Engine"
Go to C4-1.
light.
light does not
If "Check Engine" light stays on,
come on at all
read inactive code.
No active codes and
All system diagnostics are
"Check Engine"
complete. Please review this
light comes on
section from first step to find
and stays on.
Fault codes
Go to START-1, pg 3-345.41 to
present.
service other codes.
Change 3 3-345.93
