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Page Title:
CHART - 8 - NO "CHECK GAUGES" LIGHT (CGL) DURING BULB CHECK (Cont'd) |
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 TM 9-2320-364-20-1
Section IV. TROUBLESHOOTING CHARTS (Cont.)
D. CHART - 8 - NO "CHECK GAUGES" LIGHT (CGL) DURING BULB CHECK (Cont'd)
-
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
C 8-4
Check for Open
Remove jumper wire.
Less than
Ignition line (ckt #439)
Read voltage on vehicle harness
11.5 volts.
open. Repair open.
connector, socket B3 (red lead)
Then go to C 8-30.
to a good ground (black lead).
Greater than
Go to C 8-5.
or equal to 11.5 volts.
C 8-5
Check for Battery +
Turn ignition off.
Less than
Either a DDEC circuit
Disconnect 5-way power harness
11.5 volts on either
breaker (CB22 or CB23) is
connector at ECM.
reading.
blown, and/or battery power
Read voltage on 5-way power
line(s)(ckt #240 or #241)
harness connector, socket A (red
has an open or short
lead), to a good ground (black
to ground. Repair problem.
lead).
Then go to C 8-30.
Also read voltage on socket C
(red lead) to a good ground
Greater than
Go to C 8-6.
(black lead).
or equal to 11.5 volts
on both readings.
C 8-6
Check for Ground
Read voltage on 5-way power
Less than
Ground line(s) (ckt #150) has
harness connector, socket A
11.5 volts on
an open. Repair open. Then
(red lead) to socket D (black lead).
either reading.
go to C 8-30.
Also read voltage on 5-way power
harness connector, socket C
(#240) (red lead) to socket E
Greater than
Go to C 8-7.
(#150) (black lead).
or equal to
11.5 volts on both
readings.
2-601
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