41" (P0230-H/L) Fp Circuit Malfunction - Suzuki TU250X Service Manual

4-62 FI SYSTEM DIAGNOSIS

"41" (P0230-H/L) FP CIRCUIT MALFUNCTION

DETECTED CONDITION
41 No voltage is applied to fuel pump.
P0230 Voltage is applied to fuel pump although
H
FP circuit is shut.
No voltage is applied to fuel pump
L
although FP circuit is normal.
ECM
FP

When using the multi circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle-point probe to prevent the terminal damage or terminal bend.
INSPECTION
NOTE:
After repairing the trouble, clear the DTC using SDS tool.
(4-24)
Step 1 (When indicating 41:)
1) Turn the ignition switch OFF.
2) Lift up the fuel tank by removing the fuel tank mounting bolt.
(5-3)
3) Check the FP coupler for loose or poor contacts.
If OK, then check the fuel pump. (5-5)
Fuel pump
M
B R
O/W
Y/W
POSSIBLE CAUSE
• FP circuit open or short
• FP malfunction
• ECM malfunction
• FP circuit shorted to power source
• FP circuit open
To side-stand
switch
Side-stand
relay
1
Ignition switch