TM 5-3805-280-24-1
Sub-System Diagnostics
FUEL LEVEL INDICATOR
With adequate fuel in tank, turn key switch ON.
YES: Indicator is OK. Go
LIGHT (H13) CHECK
to next check.
Observe fuel level indicator.
NO: If indicator does not
come ON, check indicator
Does indicator come ON when key switch is turned ON, then go OFF 2--3 seconds
lamp.
later?
If indicator does not go
OFF, go to next check.
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FUEL LEVEL SWITCH
Disconnect harness from fuel level switch.
YES: Fuel level switch
(B2) CHECK
has failed. Replace.
9015
If indicator was ON, did it go OFF with harness disconnected and key switch ON?
15
NO: Check harness.
66
If indicator was OFF, connect a jumper wire between harness connector pins.
Does indicator come ON when key switch is ON?
1/1
ENGINE COOLANT
YES: Gauge and gauge
TEMPERATURE GAUGE
resistor are OK. Go to
(P2) CHECK
engine coolant
temperature sender (B9)
check.
YES: Go to next check.
T118390 UN21NOV98
Disconnect 20-pin harness connector from monitor display and controller connector.
Connect 24 volts to 20-pin monitor display and controller terminal 30.
Then ground terminal 47.
Does gauge needle point to "C" with 24 volts applied to terminal 30, and "H" with
terminal 47 grounded?
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