FUEL LEVEL SENDING UNIT /
SENSOR
DESCRIPTION
The fuel gauge level sending unit is attached to the
side of fuel pump module. The level sensor is a vari-
able resistor.
OPERATION
Its resistance changes with the amount of fuel in
the tank. The float arm attached to the sensor moves
as the fuel level changes.
The fuel level input is used as an input for OBD II.
If the fuel level is below 15% or above 85% of total
tank capacity several monitors are disabled. There
are diagnostics for the level circuit open and shorted.
REMOVAL
Remove fuel pump module. Refer to Fuel Pump
Module in this section.
(1) Depress retaining tab and remove the fuel
pump/level sensor connector from theBOTTOMof
the fuel pump module electrical connector (Fig. 1).
NOTE: The pump module harness on TOP of flange
is not serviceable or removable.
(2) Pull off the locking wedge.
(3) Using a small screwdriver lift locking finger
away from terminal and push terminal out of connec-
tor (Fig. 2).
(4) Push level sensor signal and ground terminals
out of the connector (Fig. 3).(5) Insert a screwdriver between the fuel pump
module and the top of the level sensor housing (Fig.
4). Push level sensor down slightly.
(6) Slide level sensor wires through opening fuel
pump module (Fig. 5).
(7) Slide level sensor out of installation channel in
module.
INSTALLATION
(1) Insert level sensor wires into bottom of opening
in module.
(2) Wrap wires into groove in back of level sensor
(Fig. 6).
(3) While feeding wires into guide grooves, slide
level sensor up into channel until it snaps into place
(Fig. 7). Ensure tab at bottom of sensor locks in
place.
Fig. 1 Fuel Pump/Level Sensor Electrical Connector
1 - ELECTRICAL CONNECTOR
2 - RETAINING TAB
Fig. 2 Wire Terminal Locking Finger
1 - LOCKING FINGER
2 - WIRE TERMINAL
Fig. 3 Removing Wires From
1 - FUEL PUMP FEED (RED B+)
2 - LEVEL SENSOR SIGNAL
3 - LEVEL SENSOR GROUND
4 - FUEL PUMP GROUND (BK)
RSFUEL DELIVERY14-5
