Fuel Pump Module Check - Yamaha Waverunner VXS VX1800 Service Manual

5. Install the fuel pump relay and fuse box
cover.

Fuel pump module check

1. Connect the YDIS.
2. Using the "Stationary test" of the YDIS, lis-
ten for the fuel pump module operation
sound.
3. Disconnect the fuel pump module coupler
"a".
4. Supply power to the ECM, and then mea-
sure the input voltage at the fuel pump
module coupler terminals (wire harness
end). Replace the fuel pump module if
within specification. Check the wire har-
ness if out of specification.
TIP:
After the power is supplied to the ECM, voltage
will only be applied to the fuel pump module for
3 seconds.
a
Input voltage
12 V (battery voltage)
Blue (L)–Black (B)
5. Remove the fuel pump module. See "Fuel
tank and fuel pump module" (4-9).
6. Measure the fuel sender resistance. Re-
place the fuel sender if out of specifica-
tions.
L B
Y
A. Lower position
B. Upper position
Lower position resistance
133.5–136.5 Ω
Upper position resistance
5.0–7.0 Ω
7. Install the fuel pump module. See "Fuel
tank and fuel pump module" (4-9).
7-30
Fuel system
B
B
A