STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
D. CHART - 8 - NO “STOP ENGINE” LIGHT (SEL) DURING BULB CHECK
NOTE - This chart is only to be used if:
1)
All basic mechanical checks and physical inspections have been performed with no problem found, and
2) Diagnosis of DDEC-III was started at step Start-1, pg 3-345.41 and you have now been referred here.
C 8-1
Try to Force SEL on
Plug in DDR.
SEL is still off
Go to C8-2
Turn ignition on.
Select activate outputs
SEL is on
Go to C8-4.
Activate SEL with DDR.
C 8-2
Check for Short
Remove jumper wire.
Less than
5 Amp ignition fuse (or circuit
Read voltage on vehicle harness
11.5 volts (or
breaker) is blown, and/or
connector, socket B3 (red lead)
23.0 volts
ignition line (ckt #439) is open
to a good ground (black lead).
if using a
or shorted to ground. Repair
24 volt ignition).
problem. Then go to C8-30.
Greater than
Go to C8-3.
or equal to 11.5 volts
(or 23.0 volts
if using a 24 volt ignition.
C 8-3
Bulb Check
Remove SEL bulb and check
Bulb is
SEL Driver line (ckt #509) is
whether it's burned out or
okay.
open. Repair open. Then go to
otherwise damaged.
C8-30.
Bulb is
Replace bulb. Then go to C8-30.
not okay.
Change 3 3-345.105
