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ELEC
FUEL INJECTION SYSTEM
EAS00502
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
(installed on the throttle body)
▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Disconnect the throttle position sensor cou-
pler from the throttle position sensor.
b. Connect the pocket tester (
Ω
×
1k) to the
throttle position sensor.
c. Measure the maximum throttle position sen-
sor resistance.
Out of specification
→
Replace the throttle
position sensor.
d. Connect the pocket tester (
Ω
×
1k) to the
throttle position sensor.
e. While slowly opening the throttle, check that
the throttle position sensor resistance is
within the specified range.
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.
Out of specification or the resistance
changes abruptly
→
Go to step 2 below.
Tester positive probe
→
blue terminal
1
Tester negative tester probe
→
black/blue terminal
2
Maximum throttle position sensor
resistance
4.0 ~ 6.0 k
Ω
at 20 °C
(blue — black/blue)
Tester positive probe
→
yellow terminal
3
Tester negative probe
→
black/blue terminal
2
B/L
Y
L