Inspection - TOHATSU 200 Series Service Manual

dummyhead dummyhead
FUEL SYSTEM
FUEL PUMP (HIGH PRESSURE SIDE)

INSPECTION

CIRCUIT INSPECTION
1. No.8 Fuse (10 A) inspection
Turn the combination switch OFF.
Check for blown No.8 fuse.
Is the fuse blown?
YES
NO
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
harness side No.2 (Blue/Red) terminal and No.1
(Black) terminal.
Is there battery voltage for a few seconds?
YES
NO
3. Fuel pump relay, main relay Inspection
Turn the combination switch OFF.
Inspect the fuel pump relay (page 10-7).
Inspect the main relay (page 10-6).
Is the fuel pump relay normal?
YES
NO
4. Fuse/relay junction box inspection
Turn the combination switch OFF.
Inspect the fuel pump relay circuit in the fuse/relay
junction box (page 10-10).
Is the fuse/relay junction box normal?
YES
NO
5-56
– Replace the blown fuse and check for
short in the main wire harness or incorrect
load by referring to the fuse load chart
(page 4-4).
– GO TO STEP 2.
.
– Replace the fuel pump (High pressure
side) with a new one and recheck.
– GO TO STEP 3.
– GO TO STEP 4.
– Replace the fuel pump relay or main relay
with a new one and recheck.
– GO TO STEP 5.
– Replace the fuse/relay junction box with a
new one and recheck.
FUEL PUMP (HIGH PRESSURE SIDE)
2P CONNECTOR
MAIN WIRE HARNESS SIDE
main wire
FUEL PUMP
(Blue/Red)
GND3
(Black)