Hisun HS5DUTV-2, Maintenance Handbook

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MAINTENANCE AND ADJUSTMENT OF THE EV
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3. Jumper wires are temporary test measures only. Do not leave a jumper wire
installed as a permanent solution. This creates a severe fire hazard that could
easily lead to complete loss off the motorcycle
4. When using a jumper wire always install an inline fuse/fuse holder (available at
most auto supply stores or electronic supply stores) to the jumper wire. Never use
a jumper wire across any load (a component that is connected and turned on).
This would result in a direct short and will blow the fuse(s)
Test Procedures
Voltage test
Unless otherwise specified. Make all voltage tests with the electrical connectors
still connected. Insert the test leads into the backside of the connector and make
sure the test lead touches the electrical wire or metal terminal within the connector
housing. If the test lead only touches the wire insulation. There will be a false
treading
Always check both sides of the connector as one side may be loose or corroded.
Thus preventing electrical flow through the connector. This type of test can be
performed with a test or a voltmeter. A voltmeter gives the best results
NOTE
If using a test light. It does not
make any difference which test
lead is attached to ground
1. Attach the voltmeter negative test lead to a good ground (bare metal). Make sure
the part used for ground is not insulated with a rubber gasket or rubber grommet
2. Attach the voltmeter positive test lead to the point to be tested
3. Turn the ignition switch on. If using a test light. The test light will come on if voltage
is present. If using a voltmeter. Note the voltage reading. The reading should be
within I volt of battery voltage. If the voltage is less. There is a problem in the
circuit
Voltage drop test
The wires. Cables. Connectors and switches in an electrical circuit are designed
to carry current with low resistance. This endures that current can flow through the
circuit with a minimum loss of voltage. Voltage drop indicates where there is
resistance in a circuit. A higher than normal amount of resistance in a circuit
decreases the flow of current and cause the voltage to drop between the source and
destination in the circuit.
Because resistance causes voltage to drop. A voltmeter is used to measure
voltage drop when current is running through the circuit. If the circuit has no
resistance. There is no voltage drop so the voltmeter indicates 0 volts. The greater
the resistance in a circuit. The greater the voltage drop reading.
To perform a voltage drop: