6 - 8
–
+
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.
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 posi-
tion sensor coil
resistance
Tester selector
position
4 ~ 6 k
Ω
at
20 ˚C (68 ˚F)
k
Ω
×
1
2. Loosen:
●
Throttle stop screw
1
NOTE:
Turn out the throttle stop screw until the throt-
tle shaft is in the full close position.
