About this item
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【CIRCUIT TESTER WIDELY APPLICATION】Automotive Circuit Test Probe EM287
can be used to test continuity, test polarity of a voltage, check lamp,
check electric motor, follow and locate short circuits, test for bad
ground contacts and measure dc voltage from 2V to 24V etc.
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【HAS LONG TEST LEAD】Electrical System Analyzer has long test lead. The
cable length is about 5m(16ft) which allows you test any electrical
system easily.
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【OVERLOAD PROTECTION】Car Electrical Diagnostic Tool Overload
Protection: When the current exceeds 8A, the unit will disconnect the
current automatically.
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【EASY TO USE】Automotive Electrical Test Equipment, it's easy to use.
Battery by the vehicle battery directly. The illumination function
enables automotive technician to test the electrical system in the
darkness.
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【INSUFFINIENT LIGHT ENVIRONMENT】Automotive Wire Tracer takes the
insufficient light environment in consider, the tool built in flashlight
to indicate the DC voltage measurement.
OPERATION INSTRUCTION
1.Testing the Unit and the Connections 2. Using Illumination
Press the front part(“－’’)of the rock switch, To turn on or off the illuminator,keep
the test indicator should light RED. the clip of the auxiliary ground lead in
Press the rear part (“＝’’),the test contact with the TOUCH metal for
indicator should light GREEN. about 0.5 second and then remove the
The unit is now ready for use. clip from the TOUCH metal.
If the test indicator did not light,the
cause may be that the clip connections
are not good or the unit is damaged.
3.Measuring DC Voltage 4.Polarity Test
a.Set the selection switch to “VOLTAGE” Note:Set the selection switch to
position. “TEST”position.
b.Connect the probe to the more Contacting the probe’s tip to a
positive terminal of the circuit to be positive(+) circuit will light the test
measured,and the clip of the auxiliary indicator RED.Contacting the probe’s tip
ground lead to the more negative to a negative(－)circuit will light the test
terminal of the circuit. indicator GREEN.Contacting the probe’s
tip to an open circuit does not turn on
c.The voltage indicators will illuminate the test indicator.
to indicate the voltage of the circuit.
5.Continuity Test 6.Activating Components out of the
Note:1.Set the selection switch to Vehicle’s Electrical System
“TEST”position. Note:Set the selection switch to”TEST”position.
2. Don’t press the rock switch, By using the probe tip together with the
By using the probe tip together with the auxiliary ground lead,components can be
auxiliary ground lead, continuity can be activated,thereby testing their function.
tested on wires and components which Connect the auxiliary ground lead’s clip to the
are disconnected from the vehicle’s negative terminal of the component to be
electrical system. tested.Contact the probe to the positive
terminal of the component, the test indicator
should light GREEN indicating continuity
through the component.
7. Testing Trailer Lamps and Connections 8.Activating Electrical Components
1)Set the selection switch to “TEST”position. Note:Set the selection switch to”TEST”position.
2)Connect the unit to a good battery. a.Activating components with the
3)Clip the clip of the auxiliary ground lead to positive(+)voltage,Contact the probe tip to the
the trailer ground. positive terminal of the component,the test
4)Probe the contacts at the jack while indicator should light GREEN.While keeping an
pressing the rock switch’s front
par((“－’’). eye on the green indicator,quickly press and
This lets you check the operation and release the rock switch’s front part(“－’’).If the
orientation of the
trailer lamps. green indicator changed instantly from GREEN
to RED,you may proceed with further
activation.If the green indicator went off at
that instant,the uit has been overloaded.
b.Activating electrical components
with negative(－)voltage
Contact the probe tip to the negative terminal
of the component,the test indicator should
light RED.
9.Jumper Lead Feature 10.Checking for Bad Ground Contacts
Note:Set the selection switch to”TEST” Note:Set the selection switch to”TEST”position.
position. Probe the suspected ground wire or contact
The black battery clip and the auxiliary with the probe tip.Observe the green test
ground lead are connected
directly indicator.
through the unit.By leaving the red battery Press the rock switch’s front part(“－”)then
clip disconnected
from the vehicle’s battery, release.
the unit can be used as a long jumper lead. If the test indicator changed from GREEN to
Be careful to avoid short circuit and RED,this is not a true ground.
overloading when using this jumper
function. If the test indicator turned off when you
In this configuration, the leads are not pressed the rock switch’s front part(“－”)
protected by the
unit’s built-in circuit breaker.
Automotive Test Device includes:
*1pc x allsun Circuit Test Device
*1pc x English User's Manual
*1pc x Flexi Extension Cable
*1pc x Crocodile Clip(one is Red, the other is Black)
*1pc x Wire Test
*1pc x Back-Test
