TOHATSU BFT115A Service Manual page 254

FUEL SYSTEM
2. Fuel injector signal line open or short circuit
Inspection
Turn the combination switch OFF.
Disconnect the ECM connector B
Check for open or short circuit between each fuel
injector 2P connector main wire harness side No.1
terminal and ECM connector B
harness side terminal.
Are there any shorts or opens?
YES
NO
THROTTLE BODY INSPECTION
Remove the silencer case (page 5-83).
• Do not adjust the throttle stop screw (1) as it is
factory preset.
Check that the throttle valve turns smoothly when the
throttle cam (2) is turned.
Check that there is no looseness on the throttle valve
shaft when turning the throttle lever (3).
Make sure there is no clearance between the throttle
stop screw and the throttle valve lever stopper (4).
Check for dirt or stains on the throttle valve and the
throttle body bore.
If the throttle valve and bore have dirt or stains, clean
the throttle body (page 5-86).
Install the silencer case (page 5-83).
5-136
– Repair the open or short circuit in Brown or
Red or Blue or Yellow wire between the
fuel injector and ECM.
– Circuit is normal.
.
13
main wire
13
(1)
(4)
(2)
(3)
(2)