Yamaha Royal Star Tour Deluxe XVZ13CTT Supplementary Service Manual - Elec
– 60 –
–
+
ELEC
FUEL PUMP SYSTEM
EAS00759
YES
NO
EAS00817
YES
NO
EAS00818
YES
NO
5. Fuel pump relay
• Remove the relay unit from the wire har-
ness.
• Connect the pocket tester (
Ω × 1) and bat-
tery (DC 12 V) to the fuel pump relay cou-
pler as shown.
Positive battery terminal
→ red/black 1
Negative battery terminal
→ blue/red 2
Positive tester probe
→ red/black 1
Negative tester probe
→ blue/black 3
• Does the fuel pump relay have continuity
between red/black and blue/black?
Replace the relay
unit.
Sb/W
R/B
L
L/B
L/R
L/W
L/Y
Sb
L/W
B/Y
1
3
2
6. Fuel pump resistance
• Disconnect the fuel pump coupler from the
wire harness.
• Connect the pocket tester (
Ω × 1) to the
fuel pump coupler as shown.
Positive tester probe
→ black/blue 1
Negative tester probe
→ black 2
• Measure the fuel pump resistance.
Fuel pump resistance
4 ~ 30
Ω at 20 °C (68 °F)
• Is the fuel pump OK?
Replace the fuel
pump.
7. Wiring
• Check the entire fuel pump system’s wir-
ing.
Refer to “CIRCUIT DIAGRAM”.
• Is the fuel pump system’s wiring properly
connected and without defects?
Replace the ignitor
unit.
Properly connect or
repair the fuel pump
system’s wiring.
B
B/L
2
1