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ELEC
THROTTLE POSITION SENSOR SYSTEM
HANDLING NOTE
CAUTION:
Do not loosen the screws (throttle position
sensor)
1
except when changing the throt-
tle position sensor due to failure because it
will cause a drop in engine performance.
1
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
• Couplers and leads connection
Rust/dust/looseness/short-circuit →
Repair or replace.
THROTTLE POSITION SENSOR COIL
INSPECTION
1. Inspect:
• Throttle position sensor coil resistance
Out of specification → Replace.
Tester (+) lead
→
Blue lead
1
Tester (–) lead
→
Black lead
2
Throttle position
sensor coil
resistance
Tester selector
position
4 ~ 6 kΩ at
20 °C (68 °F)
kΩ × 1
2. Loosen:
• Throttle stop screw 1
N
OTE:
Turn out the throttle stop screw until the throt-
tle shaft is in the full close position.