Switch And Sensor - Kubota M5640SU Workshop Manual

M5640SU, M5640DT-SU, WSM

(4) Switch and Sensor

PTO/Hour Meter Select Switch
1. Check the resistance between terminal a and terminal c while
pushing the PTO/Hour meter select switch (1).
2. It is OK if 0 ohm is indicated.
3. Check the resistance between terminal b and terminal c while
pushing the dummy switch (2).
4. It is OK if 0 ohm is indicated.
(1) PTO/Hour Meter Select Switch
Engine Oil Pressure Switch Panel Board and Wiring Harness
1. Disconnect the lead from the engine oil pressure switch after
turning the main switch OFF.
2. Turn the main switch ON and connect a jumper lead from the
lead to the chassis.
3. If the engine oil pressure indicator lamp does not light, the panel
board circuit or the wiring harness is faulty.
(1) Engine Oil Pressure Switch
Checking Coolant Temperature Sensor
1. Disconnect the connector from the coolant temperature sensor
(1).
2. Measure the resistance with an ohmmeter across the terminal 1
and 2 of coolant temperature sensor (1).
3. If the measurement is not indicated, the sensor is faulty.
Resistance
Reference
(Sensor terminal
value
1 – terminal 2)
(1) Coolant Temperature Sensor
9-S22
ELECTRICAL SYSTEM
(2) Dummy Switch
9Y1210365ELS0046US0
(a) From Oil Pressure Lamp
9Y1210365ELS0017US0
Approx. 117 Ω at 120 °C (248 °F)
Approx. 189 Ω at 100 °C (212 °F)
Approx. 290 to 354 Ω at 80 °C (176 °F)
Approx. 808 Ω at 50 °C (122 °F)
Approx. 2.21 to 2.69 kΩ at 20 °C (68 °F)
9Y1210365ELS0047US0
KiSC issued 07, 2009 A