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ELECTRICAL SYSTEM
I
L
H
J
F
Fuel pump assembly inspection
◆ Structural drawing of the front view of the fuel pump
assembly【J】.
◆ Definition diagram of pin function of fuel pump
electrical connector【I】.
◆ Remove the driver's seat assembly and the lower
cover of the driver's seat then use a multimeter set
to the resistance ohm position to check the fuel level
sensor of the fuel pump according to the following
steps.
◆ Move the fl oating rod to check if it can move freely.
The float assembly should be able to return to a
lower position freely. If not, please replace the fuel
pump.
◆ Connect the multimeter to the middle two pins of the
cable plug【D】to test the fuel position sensor. The
multimeter displays 235±5Ω on the full fuel position
【H】, and 40±2Ω on the empty fuel position【L】.
Lowest point (L point)
Height(mm) 41±4
Resistance (Ω) 40±2
Highest point (H point)
Height(mm) 186±5
Resistance (Ω) 235±5
◆ Use the pressure gauge【F】to test the pressure
of the fuel pump supply port, and the test pressure
value is 330±17Kpa under the power-on state.
Type
Test
pressure(Kpa)
Flow
(L/h)
Electric
current(A)
Sealing
pressure(Kpa)
W380224A-
JK
300
110-
140
5.5 550-850
A882CHT 300 ≥100 ≤5.8 330±5%
!
◆ If the resistance reading shows unstable, please
clean the resistance wiper with alcohol and retest.
If it is still incorrect, please replace the fuel pump.
◆ If the fuel pump supply pressure test does not meet
the requirements, please replace the fuel pump.