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The throttle body should not be disassem-bled.
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EAS00912
CHECKING THE FUEL INJECTORS
О Check:
fuel injectors Damage → Replace.
EAS00913
CHECKING THE THROTTLE BODY
П Check:
throttle body
Cracks/damage → Replace the throttle body.
П Check:
fuel passages Obstructions → Clean.
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Р Wash the throttle body in a petroleum-based solvent.
Do not use any caustic carburetor cleaning solution.
Р Blow out all of the passages with com-
pressed air.
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EAS00915
CHECKING THE FUEL PUMP OPERATION
С Check:
fuel pump operation
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У Remove the seat, fuel tank cover and fuel hose connector cover.
Refer to “SEAT” and “FUEL TANK” in chap-ter 3.
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| THROTTLE BODY | FI | |||
Ф Disconnect the fuel hose 1 from the fuel pump.
CAUTION:
Although the fuel has been removed from the fuel tank, be careful when removing the fuel hoses, since there may be fuel remain-ing in it.
NOTE:
Before removing the hoses, place a few rags in the area under where it will be removed.
Х Connect and the fuel pressure adapter 2 and the pressure gauge 3 to the fuel pump and fuel hose.
Pressure gauge 90890-03153
Fuel pressure adapter 90890-03181
Ш Set the main switch to “ON” and the engine stop switch to “ 
”.
Ш Start the engine.
Ш Measure the fuel pressure.
Out of specification → Check the fuel hose connection or replace the fuel pump.
Fuel pressure 240 ~ 260 kPa
(2.40 ~ 2.60 kgf/cm2,
~ 37.0 psi)
Ъ Turn the main switch to “OFF”.
Ъ Remove the pressure gauge and fuel pres-sure adapter.
NOTE:
Before removing the special tools, place a few rags in the area under where it will be removed.
Ы Install the fuel hose.
Ы Install the fuel hose connector cover, fuel tank cover and seat.
Refer to “SEAT” and “FUEL TANK” in chap-
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ter 3.
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| THROTTLE BODY | FI | |||
2 3 1
B / L Y L
EAS00916
CHECKING AND ADJUSTING THE
THROTTLE POSITION SENSOR
NOTE:
Before adjusting the throttle position sensor, the engine idling speed should be properly adjusted.
Ь Check:
throttle position sensor
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Э Disconnect the throttle position sensor cou-pler from the throttle position sensor.
Э Remove the throttle position sensor from the throttle body.
Э Connect the pocket tester (Ω Ч 1k) to the terminals of the throttle position sensor.
Positive tester probe → blue terminal 1 Negative tester probe →
black/blue terminal 2
Ю Measure the maximum throttle position sen-
sor resistance.
Out of specification → Replace the throttle position sensor.
Maximum throttle position sensor resistance
4.0 ~ 6.0 k Ω at 20 °C (68 °F) (blue – black/blue)
Я Connect the pocket tester (Ω Ч 1k) to the terminals of the throttle position sensor.
Positive tester probe →
yellow terminal 3 Negative tester probe →
black/blue terminal 2
А While slowly opening the throttle, check that the throttle position sensor resistance is within the specified range.
Resistance does not change or it changes abruptly → Replace the throttle position sensor.
The slot is worn or broken → Replace the throttle position sensor.
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| THROTTLE BODY | FI | |||
Х 1
B / L Y L
NOTE:
Check mainly that the resistance changes gradually when turning the throttle, since the readings (from closed to wide-open throttle) may differ slightly from those specified.
Throttle position sensor resis-tance
(0.52 ~ 0.9) ~ (4.0 ~ 6.0) k Ω at 20 °C (68 °F)
(yellow – black/blue)
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Ц Adjust:
throttle position sensor angle
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Ч Connect the throttle position sensor coupler to the wire harness.
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Ч Connect the digital circuit tester to the throt-tle position sensor.
Positive tester probe →
yellow terminal 1 Negative tester probe →
black/blue terminal 2
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