Hisun Motors HS800UTV 2014, Maintenance Handbook

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GENERAL INFORMATION
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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:
1. Connect the positive meter test lead to the electrical source (where electricity is coming from).
2. Connect the voltmeter negative test lead to the electrical load (where the electricity is going).
3. If necessary, activate the component(s) in the circuit. For example. If checking the voltage in the
starter circuit, it would be necessary to push the starter button.
4. Read the voltage drop (difference in voltage between the source and destination) on the voltmeter.
Note the following:
a. The voltmeter should indicate 0 volts. If there is a drop of 0.5 volts or more. There is a problem
within the circuit. A voltage drop reading of 12 volts indicates an open in the circuit.
b. A voltage drop of 1 or more volts indicates that a circuit has excessive resistance.
c. For example, consider a starting problem where the battery is fully charged but the starter motor
turns over slowly. Voltage drop would be the difference in the voltage at the batter (source) and
the voltage at the starter (destination) as the engine is being started (current is flowing through
the batter cables). A corroded battery cable would cause a high voltage drop (high resistance)
and slow engine cranking.
d. Common sources of voltage drop are loose or contaminated connectors and poor ground
connections.
Peak voltage test
Peak voltage tests check the voltage output of the ignition coil and ignition pulse generator at
normal cranking speed. These tests make it possible to identify ignition system problems quickly and
accurately.
Peak voltage tests require a peak voltage adapter or tester. See Chapter Ten, Ignition System
Testing.
Continuity Test
A continuity test is used to determine the integrity of a circuit, wire or component. A circuit has
continuity if it forms a complete circuit, that is, if there are no opens in either the electrical wires or
components within the circuit. A circuit with an open. On the other hand, has no continuity.
This type of test can be performed with a self-powered test light or an ohmmeter. An ohmmeter
gives the best results. If using an analog ohmmeter, calibrate the meter by touching the leads together
and turning the calibration knob until the meter reads zero.
1. Disconnect the negative battery cable.
2. Attach one test lead (test light or ohmmeter) to one end of the part of the circuit to be tested.
3. Attach the other test lead to the other end of the part or the circuit to be tested.