ELECTRICAL SYSTEM
BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RCK54D, WSM
6-S16
Fuel Pump Continuity
1. Disconnect the 2P connector from the fuel pump.
2. Check the continuity between the connector terminals with an
ohmmeter.
3. If it does not conduct, the fuel pump is faulty.
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(8) Engine Stop Solenoid
Engine Stop Solenoid Test
1. Disconnect the 1P connector from the engine stop solenoid.
2. Remove the engine stop solenoid from the engine.
3. Connect the jumper leads from the battery positive terminal to
the 1P connector, and from the battery negative terminal to the
engine stop solenoid body.
4. If the solenoid plunger is not attracted, the engine stop solenoid
is faulty.
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(9) Timer Relay
Timer Relay Connector Voltage
1. Disconnect the connector from the timer relay after turning the
main switch off.
2. Measure the voltage with a voltmeter across the connector
terminal 4 and chassis.
3. Turn the main switch on, and measure the voltage across the
connector terminal 3 and chassis.
4. If these voltages differ from the battery voltage, the wiring
harness or main switch is faulty.
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Test of Timer Relay
1. Remove the timer relay from the tractor.
2. Connect jumper leads across the battery positive terminal and
the timer relay terminal 3, and across the battery positive
terminal and the timer relay terminal 4.
3. Connect jumper leads across the battery negative terminal and
the timer relay terminal 2, and across the battery negative
terminal and the bulb terminal.
4. Connect jumper lead across the timer relay terminal 1 and the
bulb terminal.
5. The bulb lights up when disconnecting a jumper lead from the
terminal 3 arid goes off 6 to 13 seconds late, the timer relay is
proper.
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(1) Battery (12 V)
Voltage
Connector terminal 4 –
Chassis
Approx. battery voltage
Connector terminal 3 –
Chassis
Approx. battery voltage
(1) Timer Relay
(1) Timer Relay
(2) Load (Lamp)
(3) Battery (12 V)
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