C41" (P0230-H/L) Fp Relay Circuit Malfunction - Suzuki GSX-R750 Service Manual

"C41" (P0230-H/L) FP RELAY CIRCUIT MALFUNCTION

DETECTED CONDITION
C41 No voltage is applied to fuel pump
although fuel pump relay is turned ON,
or voltage is applied to fuel pump,
although fuel pump relay is turned OFF.
P0230 Voltage is applied to fuel pump although
H fuel pump relay is turned OFF.
No voltage is applied to fuel pump
L
although fuel pump relay is turned ON.
ECM
VM
FP Relay
INSPECTION
Step 1 (When indicating C41:)
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (5-3)
3) Check the FP relay coupler for loose or poor contacts.
If OK, then check the FP relay. (5-7)
Fuel pump
M
Y/R
Y/B
Fuel pump
relay
POSSIBLE CAUSE
• Fuel pump relay circuit open or short
• Fuel pump relay malfunction
• ECM malfunction
• Fuel pump relay switch circuit shorted to power
source
• Faulty fuel pump relay (switch side)
• Fuel pump relay coil circuit open or short
• Faulty fuel pump relay (coil side)
Engine stop
switch
To side-stand
R/BI
switch
Side-stand
O/W
relay
1
FI SYSTEM DIAGNOSIS 4-83
Ignition
switch