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FI
THROTTLE BODIES
Faulty → Replace the pressure regulator.
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Increase the vacuum pressure
→
Fuel pressure is decreased
Decrease the vacuum pressure
→
Fuel pressure is increased
EAS00500
CHECKING AND ADJUSTING THE
THROTTLE POSITION SENSOR
NOTE:
_
Before adjusting the throttle position sensor,
the engine idling speed should be properly
adjusted.
1. Check:
• throttle position sensor
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a. Disconnect the throttle position sensor cou-
pler.
b. Remove the throttle position sensor from
the throttle body.
c. Connect the pocket tester (Ω × 1k) to the
throttle position sensor.
d. Measure the maximum throttle position sen-
sor resistance.
Out of specification → Replace the throttle
position sensor.
e. Connect the pocket tester (Ω × 1K) to the
throttle position sensor.
Positive tester probe
→
blue terminal
1
Negative tester probe
→
black terminal
2
Maximum throttle position sensor
resistance
3.5 ~ 6.5 k
Ω
at 20 °C (68 °F)
(blue - black)
Positive tester probe
→
yellow terminal
3
Negative tester probe
→
black terminal
2