Kubota B1220, Workshop Manual

Page: 328 / 343

ELECTRICAL SYSTEM
B1220, B1620, B1820, WSM
9-S31 (EU)
(16) Combination Switch [B1620 and B1820]
Combination Switch
1. Remove the steering wheel and steering boot.
2. Disconnect the combination switch connector.
3. Remove the combination switch (1) and perform the following
checks 1) to 8) .
1) Connector Voltage
1. Measure the voltage with a voltmeter across the connector B1
terminal and chassis when the main switch is "ON" position.
2. If the voltage differs from the battery voltage, the wiring harness
and main switch is faulty.
2) Head Light Switch Continuity When Setting Switch at OFF
Position
1. Set the light switch to the OFF position.
2. Measure the resistance with an ohmmeter across the B1
terminal to the T terminal, the B1 terminal to the terminal 1 .
3. If infinity is not indicated, the head light switch is faulty.
3) Head Light Switch Continuity When Setting Switch at On
Position
1. Set the light switch to the ON position.
2. Measure the resistance with an ohmmeter across the B1
terminal to the T terminal and the B1 terminal to the terminal 1 .
3. If 0 Ω is not indicated, the head light switch is faulty.
4) Turn Signal Light Switch Continuity When Setting Switch
Knob OFF Position
1. Set the turn signal light switch to the OFF position.
2. Measure the resistance with an ohmmeter across the B2
terminal and L terminal, the B2 terminal and R terminal.
3. If infinity is not indicated, the combination switch is faulty.
(1) Combination Switch
Voltage
Main switch
at
"ON"
position
B1 terminal
– Chassis
Battery voltage
Resistance
(Switch at
OFF
position)
B1 terminal – T terminal
Infinity
B1 terminal – 1 terminal
Resistance
(Switch at
ON
position)
B1 terminal – T terminal
0 Ω
B1 terminal – 1 terminal
Resistance
(Switch at
ON
position)
B2 terminal – T terminal
Infinity
B2 terminal – 1 terminal
KiSC issued 07, 2011 A