Yamaha YZF-R6 Service Manual page 408

5. Starting circuit cutoff relay
S Disconnect the relay from the coupler.
S Connect the pocket tester (Ω
tery (12 V) to the relay terminals as shown.
Battery positive terminal ! red
Battery negative terminal ! blue/red
Tester positive probe ! red
Tester negative probe ! blue/black
S Does the fuel pump relay have continuity be-
tween red/black and blue/black?
YES
EB808400
6. Fuel pump resistance
S Disconnect the fuel pump coupler from the
wire harness.
S Connect the pocket tester (Ω
pump coupler (fuel pump side) as shown.
Tester positive probe ! blue/black
Tester negative probe ! black
1) and bat-
1
2
1
3
NO
Replace the starting
circuit cutoff relay.
1) to the fuel
1
2
FUEL PUMP SYSTEM
S Measure the fuel pump resistance.
Fuel pump resistance
4 X 30 Ω at 20_C
S Is the fuel pump OK?
YES
EB808401
7. Wiring
S Check the entire fuel pump system's wiring.
Refer to "CIRCUIT DIAGRAM".
S Is the fuel pump system's wiring properly
connected and without defects?
YES
Replace the CDI unit.
8-52
ELEC
NO
Replace the fuel
pump.
NO
Properly connect or
repair the fuel pump
system's wiring.