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FUEL SYSTEM (DFI) 3-73
Throttle Body Assy
ISC (Idle Speed Controller) Removal/Installation
•
Remove
Seat (see Hull/Engine Hood chapter)
Air Filter (see Air Filter Removal)
Bands [A]
ISC connector [B]
Stepping Motor Mounting Screws [C]
Stepping Motor [D]
ISC Actuator Mounting Bolts [E]
ISC Actuator [F]
•
Clean the mating surface of throttle body and ISC actuator
(stepping motor).
•
Replace the O-ring [A] with a new one.
•
Install the stepping motor [B] and tighten the screws [C].
•
Install the ISC actuator [D] and tighten the bolts [E].
Torque - ISC Actuator Mounting Bolts: 4.9 N·m (0.50 kgf·m,
43 in·lb)
•
Route the harness and tighten the bands correctly (see
Appendix chapter).
•
After installing the ISC actuator, check the Smart Steering
System Operation in the water.
ISC (Idle Speed Controller) Inspection
•
Check idle speed with a tachometer in the multifunction
meter.
○
With the engine idling, open and close the throttle lever.
Idle Speed
Standard: 1 300 ±100 r/min (rpm) -both in and out of
water
If the idle speed is within the standard, the ISC operates
properly.
If the idle speed is out of the specified range, inspect the
audible operation.
•
Run the engine and then stop the engine.
•
Certain buzzing and humming sounds will be emitted from
the ISC [A] after the engine stop.
If the ISC sounds, inspect the ISC resistance.
If the ISC does not sound, replace the steeping motor.