TM 9-2540-207-14&P
E2 - LOW FUEL PRESSURE
E2
Fuel supply pressure to the heater is below 3psi
CHECK/POSSIBLE CAUSE
REF.
REPAIR
1
Check that vehicle or source
2.6
Reconnect source fuel pump
fuel pump is operating
Restart Heater
2
Check if vehicle fuel filter is
Replace fuel filter
plugged
Restart Heater
3
Check for air bubbles in the fuel
Bleed air from fuel lines.
line.
4
Check to see if fuel line leading
Straighten fuel lines and remove
to heater is pinched or
obstructions
obstructed
Restart Heater
5
Check that there is ample fuel
Fill fuel tank with fuel
supply
Restart Heater
6
Ensure that Fuel Pressure
5.5.1
Reconnect Fuel Pressure Sensor to Power
Sensor is connected to Power
Wiring Harness
Wiring Harness
Restart Heater
7
Defective Fuel Pressure Sensor
5.5.1
Replace Fuel Pressure Sensor
Restart Heater
8
Defective Power Wiring Harness
5.5.6
Replace Power Wiring Harness
Restart Heater
6-16
