ARMY TM 9-6115-671-14
AIR FORCE TO 35C2-3-446-32
MARINE CORPS TM 09249A/09246A-14
4-40
TABLE 4-4. UNIT TROUBLESHOOTING (CONTINUED)
OK
Not OK
No
Yes
OK
Not OK
FAULT INDICATOR DISPLAYS CIRCUIT
FAILURE - FUEL LEVEL
FAULT INDICATOR displays CIRCUIT
FAILURE - FUEL LEVEL.
Test fuel level system electrical circuit
for breaks or loose connections. Refer
to Schematic, FO-1.
Test fuel level sender
(see para.4.11.5).
Repair or replace defective wires or
connections. Refer to Wiring Diagram,
FO-1. Hold FAULT RESET switch in
ON position for two seconds to clear
fault.
Replace defective
fuel level sender
(see para.4.11.5).
Check for breaks or loose
connections in DC electrical
circuit. Refer to Schematic,
FO-1.
Is HEARTBEAT LED
on I/O interface module
blinking?
Repair charging circuit.
Refer to Schematic,
FO-1.
Not OK
OK
Notify next higher level
of maintenance.
Replace I/O interface
module (see para.4.8.25).
