6 - 20
–+
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.