Kzyee KM10 Assembly instructions

Table of Contents

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Table of Contents
1. IMPORTANT SAFETY INFORMATION......................................................2
2. USING THE TEST TOOL ...........................................................................2
2.1 SPECIFICATIONS ............................................................................2
2.2 TOOL DESCRIPTION... ......................................................................3
2.3 PARTS LIST ........................................................................................4
2.4 GENERAL DESCRIPTION ................................................................4
2.5 POWER ..............................................................................................4
2.6 QUICK SELF-TEST ............................................................................4
2.7 AUTO CIRCUIT BREAKER ...............................................................5
2.8 WORK MODE. ....................................................................................6
3. OPERATING INSTRUCTIONS ............................................................7
3.1 VOLTAGE & POLARITY TESTING ....................................................7
3.2 CONTINUITY TESTING ....................................................................9
3.3 SIGNAL CIRCUIT TESTING .............................................................10
3.4 ACTIVATING COMPONENTS IN YOUR HAND ...............................10
3.5 ACTIVATING COMPONENTS IN THE VEHICLE..............................11
3.6 TESTING TRAILER LIGHTS AND CONNECTIONS.........................12
3.7 ACTIVATING COMPONENTS W/GROUND......................................13
3.8 RED/GREEN POLARITY LED.............................................................14
3.9 FOLLOWING & LOCATING SHORT CIRCUITS..................................14
3.10 CHECKING FOR BAD GROUND CONTACTS ..........................................15
4. TEST TOOL SPECIFICATIONS ………………….................................15
5. TEST TOOL KNOWLEDGE ..............................................................15
6. WARRANTY ................................................................................................17

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1. Important Safety Information
To prevent personal injury or damage to vehicles and/or the test tool, read this
instruction manual first and observe the following safety precautions at a minimum
whenever working on a vehicle:
◆Always perform automotive testing in a safe environment.
◆Wear safety eye protection that meets ANSI standards.
◆Keep clothing, hair, hands, tools, test equipment, etc. away from all moving or hot
engine parts.
◆Operate the vehicle in a well ventilated work area: Exhaust gases are poisonous.
◆Put blocks in front of the drive wheels and never leave the vehicle unattended
while running tests.
Use extreme caution when working around the ignition coil, distributor cap, ignition
wires and spark plugs. These component create hazardous voltages when the
engine is running.
◆Put the transmission in PARK ( for automatic transmission) or NEUTRAL (for
manual transmission) and make sure the parking brake is engaged.
◆Keep a fire extinguisher suitable for gasoline/chemical/ electrical fires nearby.
◆Don’t connect or disconnect any test equipment while the ignition is on or the
engine is running.
◆Keep the tool dry, clean, free from oil/ water or grease. Use a mild detergent on a
clean cloth to clean the outside of the test tool, when necessary.
◆When the power switch in the tool is depressed battery current/voltage is
conducted directly to the tip which may cause sparks when contacting ground or
certain circuits. Therefore the tool should NOT be used around flammables such as
gasoline or its vapors. The spark of an energized tool could ignite these vapors. Use
the same caution as you would when using an arc welder.
2. Using the Test Tool
2.1 Specifications
Display
TFT color display (160x128 dpi )
Operating Temperature
0 to 60℃( 32 to 140℉)
Storage Temperature
-40 to 70℃(-40 to 185℉)
External Power
12.0 or 24.0 V power provided via vehicle battery
Dimensions (L*W*H)
178*47*28mm (7*1.85*1.10in )
Net Weight
0.1Kg (0.22LB)

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2.2 Tool Description
①Probe Tip - Contacts the circuit or component to be tested.
②Head Lights - Illuminates dark work areas or work areas at night.
③Red/ Green Polarity Indicator - Identifies positive, negative or open circuits. The
RED Indicator lights when the Probe Tip is contacting a positive circuit. The GREEN
Indicator lights when the probe Tip is contacting a negative circuit.
④LCD Display - Indicates test results.
⑤Power Switch - Allows you to conduct a positive or negative battery current to the
tip for activating and testing the function of electrical components.
⑥Mode Button - Selects the work mode: AC voltage, DC voltage, resistance,
diode.
⑦Auxiliary Ground Lead - Assists test as a ground lead.
⑧Adaptor -Connects to the battery.

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2.3 Parts List
2.4 General Description
The tool is the best electrical tester for reducing diagnostic time in all 6 to 30-volt
vehicle electrical systems. After a simple hook-up of the tool to the vehicle’s battery,
you can:
◆Determine at a glance if a circuit is positive, negative, or open without having to
reconnect clips from one battery pole to another.
◆Test for continuity with its built-in auxiliary ground lead.
◆By depressing the power switch, conduct a positive or negative battery current to
the probe tip for testing the function of an electrical component without the use of
jumper wires.
◆Test for poor ground contacts instantly without performing voltage drop tests. The
tool is also short circuit protected; its internal circuit breaker will trip if it becomes
overloaded.
◆Follow and locate short circuits without wasting fuses. The tool’s long cable allows
you to test along the entire length of the vehicle without constantly searching for
suitable vehicle grounds.
2.5 Power
The tool is powered via the vehicle battery. Connect the RED battery clamp to the
POSITIVE terminal of the vehicle’s battery, and the BLACK clamp to the NEGATIVE
terminal. When the tool is first connected to a battery (power source), it will sound a
beep and the Head Lights will be on to illuminate the test area of the probe tip.
2.6 Quick Self-Test
Before you test a circuit or component, be sure your tool is in good order by doing a
quick self-test.
With the tool connected, perform a quick self-test. The power switch is a momentary
rocker switch located on the tool’s body. Flanking the switch are positive and negative
Part
Description
Qty
1
User’s Manual
1
2
Cigarette lighter adapter
1
3
Battery hookup clips
1
4
Probe tip
1
5
Extension cable (20ft.)
1
6
Rugged blow molded case
1
7
Power assist cable
1

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markings.
Press the Power Switch forward to activate the tip with a positive voltage. The Red
LED should light and LCD display will read the battery voltage. A beep tone will sound.
Let go of the power switch and the LED will turn off and the tone will cease.
Press the Power Switch rearward to activate the tip with a negative voltage. The
Green LED should light and the LCD display will read the 0.0V (ground). A beep tone
will sound. Let go of the power switch and the LED will turn off and the tone will cease.
Your tool is working correctly and is now ready for use. ( Figure 1)
Figure 1
IMPORTANT: When powering-up components, you can increase the life of
power switch in the tool if you first press the switch, then contact the tip to the
component. The arcing will take place at the tip instead of the contacts of the switch.
2.7 Auto Circuit Breaker
The tool is short-circuit protected. Its internal circuit breaker will trip if it becomes
overload. The circuit breaker is a valuable test tool as well as a safety measure to
protect the tool from overload.
When circuit breaker tripped, all other functions of the tool are still active, which
means you can still probe a circuit and observe the voltage reading. When the circuit

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breaker is tripped, the tool will NOT be able to conduct battery current to the tip even
when the power switch is pressed. Intentionally tripping the breaker and using the
tool to probe can be considered an added precaution against accidental pressing of
the power switch.
2.8 Work mode
There are four modes to diagnose the electrical systems, which can be accessed by
depressing the Mode Button and cycling through each one.
DC voltage
While the tool in this mode, contact the probe tip to a circuit, then the LCD display will
read the DC voltage with a resolution of 0.1 volt. (Figure 2)
Figure 2
AC voltage
While the tool in this mode, contact the probe tip to a circuit, then the LCD display will
read the Max. voltage, the Min. Voltage and frequency (Figure 3).
Figure 3
Resistance
While the tool in this mode, contact the probe tip to a circuit, then the LCD display will
read the resistance between the tip and auxiliary ground lead. (Figure 4)

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Figure 4
Diode
In this mode, the probe tip contact the positive terminal of the diode, connect the
auxiliary ground lead to the negative terminal of the diode, the screen will display the
forward voltage drop, indicates the forward bias. If exchange the probe tip and
auxiliary ground lead, the screen will not display the voltage, indicates the reverse
bias.
Figure 5
3. Operating Instructions
3.1 Voltage & Polarity Testing
While the tool is in DC Voltage mode, contact the probe tip to a POSITIVE circuit. The
red LED will light and the LCD displays the voltage with a resolution of 0.1V. A beep
tone will sound.
If contact the probe tip to a NEGATIVE circuit, the green LED will light and the LCD
displays the voltage with a resolution of 0.1V. A beep tone will sound.
If contact the probe tip to an OPEN circuit, neither of the LED will light. (Figure 6)

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Figure 6
Figure 7

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3.2 Continuity Testing
While the tool is in Resistance mode, using the probe tip with chass is ground or the
auxiliary ground lead, continuity can be tested on wires and components attached or
disconnected from the vehicle’s electrical system.
When the probe tip is contacting a good ground, the LCD will indicate “0.0Ω” and
green LED will be on. A beep tone will sound (Figure 8).
Figure 8
In other cases, the LCD only indicates the resistance value. (Figure 9)
Figure 9
If the resistance value is greater than 100KΩ, the LCD will show “0L”.

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There is also another way to prove continuity of connections to ground or battery.
Power up the connection using the power switch. If the circuit breaker trips you know
that you have a good solid low resistance connection.
Note: You can use the probe tip to pierce the plastic insulation on a wire. This means
that you can test the circuit without disconnecting anything.
3.3 Signal Circuit Testing
Once you extract a DTC from the vehicle and realize that troubleshooting begins with
some kind of sensor circuit, there is a quick test you can perform to verify the code.
Testing your sensor is easy while using the tool.
For example, you suspect there is a problem with your M.A.P.? sensor circuit, then
follow the procedure involved with testing this sensor:
◆Set the tool in AC Voltage mode, using the probe tip with chassis ground or the
auxiliary ground lead.
◆Connect vacuum pump to MAP sensor.
◆Contact the probe tip to the MAP sensor positive terminal and observe the LCD
readings which should be a sine wave in normal condition.
◆Apply vacuum.
◆Release vacuum and observe the LCD readings. ( Figure 10)
Figure 10
If the LCD readings are abnormal, there is a problem with this sensor.
3.4 Activating Components in Your Hand
While the tool is in DC voltage mode, by using the probe tip in connection with the
auxiliary ground lead, components can be activated right in your hand, thereby
testing their functions.
Connect the auxiliary ground lead to the negative terminal or ground side of the
component being tested. Then contact the probe tip to the positive terminal of the
component, the green LED should light, indicating continuity through the component.
While keeping an eye on the green LED,quickly press and release the power switch
forward. If the green LED went out and the red LED came on, you may proceed with
further activation. Rock the power switch forward and hold it down to provide power

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to your component. With the power switch rocked forward, power will flow from the
positive lead on the battery into the probe tip, through the tip into the component’s
positive terminal, into the component and out of the component, through the auxiliary
ground lead and back into the tool, and back to the vehicle’s battery’s ground. (Figure
11)
(1) Press the power switch forward to activate the bulb.
(2) Contact the tip to the positive terminal of the bulb.
(3) Connect the negative auxiliary clip.
Figure 11
If the green LED went off at that instant or if the circuit breaker tripped, the tool has
been overloaded. This could happen for the following reasons:
◆The contact you are probing is direct ground or negative voltage.
◆The component you are testing is short-circuit.
◆The component is a very high current component (i.e., starter motor).
If the circuit breaker is tripped, reset it by waiting for it to cool down (15 sec.)
3.5 Activating Components in The Vehicle
While the tool in DC Voltage mode, contact the probe tip to the positive terminal of the
component, the green LED should light, indicating continuity to ground. While
observing the green LED, quickly depress and release the power switch forward. If
the green LED went out and the red LED came on, you may proceed with further

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activation. (Figure 12) If the green LED went off at that instant or if the circuit breaker
tripped, the tool has been overloaded. This could happen for the following reasons:
(1) The contact you are probing is a direct ground.
(2) The component you are testing is short-circuited.
(3) The component is a very high current component (i.e., starter motor).
If the circuit breaker is tripped, reset it by waiting for it to cool down (15 sec.)
WARNING: Haphazardly applying voltage to certain circuits can cause damage to a
vehicle’s electronic components. Therefore, it is strongly advised to use the vehicle
manufacturer’s schematic and diagnosing procedure while testing.
NOTE: When powering up components, you can increase the life of power switch if
you first press the switch, then contact the tip to the component. The arcing will take
place at the tip instead of the contacts of the switch.
Figure 12
3.6 Testing Trailer Lights and Connections
While the tool in DC Voltage mode, clip the auxiliary ground lead to the trailer
ground , probe the contacts at the jack and then apply voltage to the probe tip. This
lets you check the function and orientation of the connector and trailer lights. (Figure
13)
If the circuit breaker tripped, that contact is likely a ground. Reset the circuit breaker
by letting it cool down for 15 seconds.

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Figure 13
3.7 Activating Components W/Ground
While the tool in DC Voltage mode, contact the probe tip to the negative terminal of
the component, the red LED should light. While observing the red LED, quickly
depress and release the power switch rearward. If the red LED went out and the
green LED came on, you may proceed with further activation. (Figure 14) If the green
LED went off at that instant or if the circuit breaker tripped, the tool has been
overloaded. This could happen for the following reasons:
(1) The contact you are probing is a direct positive voltage.
(2) The component you are testing is short-circuited.
(3) The component is a very high current component(i.e., starter motor).
If the circuit breaker is tripped, reset it by waiting for it to cool down (15 sec.).

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Figure 14
WARNING: With this function, if you are contacting a protected circuit, a vehicle’s
fuse can be blown or tripped if you apply ground to it.
3.8 Red/Green Polarity LED
The Red/Green Polarity LED lights up when the probe tip voltage matches the battery
voltage within ±0.4 volts. It is added information that could be valuable to the
technician.
If the circuit you are testing is not within a 0.4 volt (plus or minus) of supply voltage,
you will see the voltage reading on the LCD but you will not hear a tone or see a red
or green LED. This tells you either you have a voltage drop in excess of 0.8 volt from
battery voltage or you are probing a circuit that has an increase of a 0.8 volt or more
over battery voltage. To determine battery voltage, simply remove the tip from the
circuit and press the power switch forward. Battery voltage will then be displayed on
the LCD. The difference between the battery voltage and what is read on the circuit is
either voltage drop or voltage increase. This allows you to determine a voltage drop
without running back to check the battery. It’s just another one of time saving feature
the tool has.
3.9 Following & Locating Short Circuits
In most cases a short circuit will appear by a fuse or a fusible link blowing or an

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electrical protection device tripping (i.e., a circuit breaker). This is the best place to
begin the search.
Remove the blow fuse from the fuse box.
Use the probe tip to activate and energize each of the fuse contacts.The contact
which trips the circuit breaker is the shorted circuit. Take note of this wire’s
identification code or color.
Follow the wire as far as you can along the wiring harness.
Here is an example for this application.
If you are following a short in the brake light circuit, you may know that the wire must
pass through the wiring harness at the door sill. Locate the color-coded wire in the
harness and expose it.
Probe through the insulation with the probe tip, and depress the power switch forward
to activate and energize the wire.
If the circuit breaker tripped, you have verified the shorted wire. Cut the wire and
energize each end with the probe tip. The wire end which trips the circuit breaker
again is the shorted circuit and it will lead you to the shorted area.
Follow the wire in the shorted direction and repeat this process until the short is
located.
3.10 Checking for Bad Ground Contacts
Probe the suspected ground wire or contact with the probe tip.
Observe the green LED. Depress the power switch forward then release. If the green
LED went out and the red LED came on, a beep will sound, this is not a true ground.
If the circuit breaker tripped, this circuit is more than likely a good ground. Keep in
mind that high current components such as starter motors will also trip the circuit
breaker.
4. Test Tool Specifications
◆DC voltage range: 0-65V +1digit
◆Resistance range: 0-100 kΩ
◆Frequency response of tone pass through 0Hz to 10Khz.
◆Circuit Breaker
◆Rating current: 1-10 Amp
◆Testing Standard:
100% current: Hold > 1 hour
150% current: trip in one hour
200% current: trip in 3-30 seconds.
300% current: trip in 0.5-4.0 seconds.
5. Test Tool Knowledge
Is the tool computer and air bag safe?
The tool LED and LCD pull no more than 1 millamp of current, therefore when using it
as a test light or multimeter it is computer and airbag safe. However, pressing the
power switch is a different story. When you press the switch forward, you are

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conducting full battery current to the tip of the probe. There is a nice safety feature
built into the tool. Simply connect the extra ground lead to the tool and press the
power switch forward until it trips the circuit breaker. This will prevent power from
going to the tip but still allow you to use the tool as a multimeter. When you are away
from computer components, simple press the reset button and you are ready to
power up again.

Limited 90 Day Warranty
KZYEE makes every effort to assure that its products meet high quality and durability
standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of
purchase. This warranty does not apply to damage due directly or indirectly, to
misuse, abuse, negligence or accidents, repairs or alterations outside our facilities,
criminal activity, improper installation, normal wear and tear, or to lack of
maintenance. We shall in no event be liable for death, injuries to persons or property,
or for incidental, contingent, special or consequential damages arising from the use
of our product. Some states do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation of exclusion may not apply to you.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY
AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the
complaint must accompany the merchandise. If our inspection verifies the defect, we
will either repair or replace the product at our election or we may elect to refund the
purchase price if we cannot readily and quickly provide you with a replacement. We
will return repaired products at our expense, but if we determine there is no defect, or
that the defect resulted from causes not within the scope of our warranty, then you
must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights
which vary from state to state.