Kubota M5040, Workshop Manual

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9-S12
M5040, M6040, M7040, WSM ELECTRICAL SYSTEM
[2] MAIN SWITCH
(1) Main Switch (ROPS Model)
Main Switch
1. Remove the panel cover (1), refer to “[1] CLUTCH PEDAL” at “2.
CLUTCH” section.
2. Disconnect the meter panel and the main switch connectors after
turning the main switch off.
3. Perform the following checking.
W1017484
Connector Voltage
1. Measure the voltage with a voltmeter across the connector
terminal B and chassis.
2. If the voltage differs from the battery voltage (11 to 14 V), the
wiring harness is faulty.
W1014366
Main Switch at ON Position
1. Turn the main switch to ON position.
2. Measure the resistance with an ohmmeter across the terminal B
and the terminal M .
3. If 0 ohm is not indicated, the B – M contacts of the main switch
are faulty.
W1014494
Main Switch at PREHEAT Position
1. Turn and hold the main switch at the PREHEAT position.
2. Measure the resistances with an ohmmeter across the terminal
B and the terminal G1 and across terminal B and terminal M .
3. If 0 ohm is not indicated, these contacts of the main switch are
faulty.
W1014641
(1) Panel Cover (2) Main Switch
Voltage
Connector terminal B
– Chassis
Approx. battery voltage
(1) Main Switch (a) From Battery Positive Terminal
Resistance
Terminal B –
Terminal M
0
Ω
Resistance
Terminal B –
Terminal G1
0
Ω
Terminal B –
Terminal M
0
Ω
KiSC issued 06, 2008 A