Suzuki Intruder VZR1800 User Manual

5-76 FI SYSTEM DIAGNOSIS
“C41” (P0230-H/L) FP RELAY CIRCUIT MALFUNCTION
INSPECTION
Step 1 (When indicating C41:)
1) Turn the ignition switch OFF.
2) Remove the right frame side cover. (#9-5)
3) Check the FP relay coupler for loose or poor contacts.
If OK, then check the FP relay. (#6-6)
Is the FP relay OK?
DETECTED CONDITION POSSIBLE CAUSE
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.
• Fuel pump relay circuit open or short
• Fuel pump relay malfunction
• ECM malfunction
P0230
P0230
H
Voltage is applied to fuel pump although
fuel pump relay is turned OFF.
• Fuel pump relay switch circuit shorted to power
source
• Faulty fuel pump relay (switch side)
L
No voltage is applied to fuel pump
although fuel pump relay is turned ON.
• Fuel pump relay coil circuit open or short
• Faulty fuel pump relay (coil side)
ECM
Side-stand
relay
Engine stop
switch
Fuel pump
relay
Fuel pump
Ignition
switch
M
Y/R
VM
FP Relay
R/BI
O/W
Y/B
To side-stand
switch
1
YES
• 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-
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.
ECM coupler (Harness side)
1
(Black) (Gray)

Suzuki Intruder VZR1800 Specifications

General

Engine Type	4-stroke, 2-cylinder, liquid-cooled, DOHC, 54-degree V-twin
Displacement	1783 cc
Bore x Stroke	112.0 mm x 90.5 mm
Compression Ratio	10.5:1
Fuel System	Fuel injection
Ignition	Electronic ignition (transistorized)
Transmission	5-speed constant mesh
Final Drive	Shaft drive
Front Suspension	Inverted telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Front Brakes	Disc, twin
Seat Height	705 mm
Rear Brakes	Disc
Front Tire	130/70R18M/C 63H
Overall Width	875 mm
Ground Clearance	140mm
Curb Weight	347 kg