6 - 8
–
+
ELEC
THROTTLE POSITION SENSOR SYSTEM
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.
2. Loosen:
●
Throttle stop screw
1
NOTE:
Turn out the throttle stop screw until the throt-
tle shaft is in the full close position.
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
3. Inspect:
●
Throttle position sensor coil variable
resistance
Check that the resistance in increased
as the throttle grip is moved from the
full close position to the full open posi-
tion.
Out of specification
→
Replace.
Tester (+) lead
→
Yellow lead
1
Tester (–) lead
→
Black lead
2
Throttle position sen-
sor coil variable
resistance
Tester
selector
position
Full closed Full opened
k
Ω
×
1
Zero ~ 3 k
Ω
at 20 ˚C
(68 ˚F)
4 ~ 6 k
Ω
at
20 ˚C
(68 ˚F)
