5-100
dummyheaddummyhead
FUEL SYSTEM
CIRCUIT INSPECTION
1. Fuse inspection
Turn the combination switch OFF.
Check for blown No.1 fuse.
Is the fuse normal?
YES – GO TO STEP 2.
NO – Replace the blown fuse and check for a
short in the main wire harness or incorrect
load by referring to the fuse load chart
(page 4-13).
2. Fuel pump power/ground line open circuit
inspection
Turn the combination switch OFF and disconnect
the fuel pump (High pressure side) 2P connector
.
Turn the combination switch ON.
Measure the battery voltage between the fuel pump
(High pressure side) 2P connector main wire
harness side No.1 (Blue/Red) terminal and No.2
(Black) terminal.
Is there battery voltage for a few seconds?
YES – Replace the fuel pump (High pressure
side) with a new one and recheck.
NO – GO TO STEP 3.
ղFUSE նFUSE ձFUSE
ECM
BATTERY
GND2
5
FLR1
FLR2
COMBINATION SWITCH
TILLER HANDLETYPE:
REMOTE CONTROLTYPE:
BAT
LOAD
GND6
JOINT CONNECTOR 1
13
29
5
FUEL PUMP
21
34
PGM-FI/MAIN RELAY
FUEL
MAIN
15
4123
T1
T3 T4
42 41
C52
C47
T2
12
5
12
16
COMBINATION SWITCH
BAT
LOAD
C56
C50
76
GND4
JOINT CONNECTOR 2
12
21
14 13
(10 A)
(30 A) (10 A)
Bl
Bl/Y
W/Bl
Bu/R
Bl
Bu/Y
Bl
Lg/R
Bu/R
Bl
Bl/Y
W/Bu
W/Y
Bl
W/Bl
W/Bu
W
W/Bu
W
W
W/Bl
Bl/Y
Lg
Bu/R
Bl
Bl/Y
W/Bu
W
Bl/Y
W/Bl
Bl/Y
W/Bl
Bl/Y
W/Bl
Bl
BLACK
YELLOW
BLUE
GREEN
RED
WHITE
BROWN
ORANGE
LIGHT BLUE
LIGHT GREEN
PINK
GRAY
Bl
Y
Bu
G
R
W
Br
O
Lb
Lg
P
Gr
FUEL PUMP (HIGH PRESSURE SIDE)
2P CONNECTOR
MAIN WIRE HARNESS SIDE
GND1
(Black)
FUEL PUMP
(Blue/Red)
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