Oil Pressure Switch; Intake Air Temperature Sensor - Yamaha RS90GTZ Service Manual

FUEL INJECTION SYSTEM

OIL PRESSURE SWITCH

1. Disconnect:
• Oil pressure switch coupler
2. Connect:
• Analog pocket tester (pocket tester)
(between the engine ground and oil pres-
sure switch terminal)
3. Inspect:
• Oil pressure switch continuity
No continuity → Replace the oil pressure
switch.

INTAKE AIR TEMPERATURE SENSOR

1. Remove the intake air temperature sensor.
NOTICE
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:
• Analog pocket tester (pocket tester)
(to the intake air temperature sensor)
TIP
Set the tester selector to the "Ω × 100" posi-
tion.
3. Immerse the intake air temperature sensor
in water
ature sensor operation.
Intake air temperature sensor
resistance:
Thermometer
4. If the intake air temperature sensor opera-
tion is defective, replace it.
5. Install the intake air temperature sensor.
7-31
FI
and check the intake temper-
290 ~ 390 Ω at 80 °C (176 °F)