THROTTLE POSITION SENSOR SYSTEM ELEC – +

HANDLING NOTE

1

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 position

Tester selector

 

 

 

 

 

 

 

 

 

sensor coil

 

 

 

 

 

position

 

 

 

 

 

resistance

 

 

 

 

 

 

 

 

 

 

 

4 ~ 6 kat

kΩ ⋅ 1

 

 

 

 

 

20 °C (68 °F)

 

 

 

 

 

 

 

 

 

 

 

 

 

2.Loosen:

• Throttle stop screw 1

NOTE:

Turn out the throttle stop screw until the throt- tle shaft is in the full close position.

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Yamaha WR250FM service manual Throttle Position Sensor System Elec +, Throttle Position Sensor Coil Inspection, ~ 6 kΩ at