Oil Pressure Switch; Intake Air Temperature Sensor - Yamaha PZ50W Service Manual

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FUEL INJECTION SYSTEM
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7-28

OIL PRESSURE SWITCH

1. Disconnect:
• Oil pressure switch coupler 1
2. Connect:
• Pocket tester
(between the engine ground and oil pressure
switch terminal)
3. Check:
• Oil pressure switch continuity
No continuity → Replace the oil pressure
switch.

INTAKE AIR TEMPERATURE SENSOR

1. Remove the intake air temperature sensor.
CAUTION:
Handle the intake air temperature sensor with
special care. Never subject it to shock or allow
it to be dropped. If it is dropped, it must be
replaced.
2. Connect:
• Pocket tester
(to the intake temperature sensor)
NOTE:
Set the tester selector to the "Ω × 100" position.
3. Immerse the intake temperature sensor 1 in
water 2 and check the intake temperature sen-
sor operation.
Intake temperature sensor resis-
tance:
290 ~ 390 Ω at 80 °C (176 °F)
3 Temperature gauge
CAUTION:
Never heat the water to a temperature of 120 °C
(248 °F) or more.
4. If the intake air temperature sensor operation is
defective, replace it.
5. Install the intake air temperature sensor and
connect the intake air temperature sensor cou-
pler.
FI