Suzuki GSR600 Service Manual page 229

4-76 FI SYSTEM DIAGNOSIS
"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 to OFF.
2) Remove the seat tail cover. (8-4)
3) Check the FP relay coupler for loose or poor contacts.
If OK, then check the FP relay. (5-6)
Is the FP relay OK?
• Y/B or O/W wire open or short or poor ] con-
nection
• Y/R or R/Bl wire open, shorted or poor W con-
nection
• If wire and connection are OK, intermittent trou-
YES
ble or faulty ECM.
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO Replace the FP relay with a new one.
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
1
Ignition
switch
ECM couplers (Harness side)