Unit UT107 Manuel utilisateur

Table of Contents

Title Page

Model UT107: OPERATING MANUAL

Overview

Unpacking Inspection

Safety Information

Rules For Safe Operation

Automotive Servicing Safety Guide

International Electrical Symbols

The Meter Structure

Rotary Switch

Functional Buttons

Display Symbols

Measurement Operation

Part 1 Multimeter Basic Testing

A. DC Voltage Testing

B. AV Voltage Testing

C. DC Current Testing

D. Resistance Testing

E. Diode Testing

F. Continuity Testing

G. 12V Battery Measurement

H. Temperature Measurement

I. Frequency Measurement

J. Measuring Duty Cycle

K. Dwell Testing

L. Engine Tach (Rotation Speed)

Testing “RPMx10”

M. Operation of Hold Mode

Part 2 Diagnosis of Automotive Troubles

A. Fuse Testing: Check the fuse to see if

it is blown out

B. Switch Testing: Check the switch to see

if it can work correctly

C. Solenoid or Relay Testing

D. Starting/Charging System Testing

Title Page

Model UT107: OPERATING MANUAL

E. Battery Power Consumption Testing

when the Engine Is off

F. Trigger Voltage Battery Load Testing

G. Voltage Drop Testing

H. Charging System Voltage Testing

I. Ignition System Testing

1. Ignition Coil Testing

2. Ignition System High Voltage Damper Testing

3. Hall Switch/Sensor Testing

4. Magnetic Resistance Sensor

5. RPMx10 Testing

6. Fuel System Testing

J. Engine Sensor Testing

1. Oxygen Sensor

2. Temperature Sensor

3. Position Sensor

4.Absolute Pressure (MAP) and Baro Sensor

5. MassAir Flow (MAF) Sensor

General Specifications

Accurate Specifications

A. DC Voltage

B.AC Voltage

C. DC Current

D. Resistance

E. Diode

F. Continuity Testing

G. 12V Battery

H. Temperature

I. Frequency

J. Duty Cycle

K. Dwell Testing

L. Tach (Rotation Speed) Testing

Maintenance

A. General Services

B. Replacing the Fuses

C. Replacing the Battery

Overview

Model UT107: OPERATING MANUAL

This Operating Manual covers information on safety and

cautions. Please read the relevant information carefully

and observe all the Warnings and Notes strictly.

Warning

To avoid electric shock or personal injury, read the

“Safety Information” and “Rules for Safe Operation”

carefully before using the Meter.

Automotive Digital Multimeter Model UT107 (hereafter

referred to as “the Meter”) is a 1999 counts, 3-1/2 digits

manual ranging meter. Spotting a unique design with

an extra large LCD display, Connect Test Leads display,

full overload protection and unique outlook design. For

this reason, it emerges as an electric meter with more

outstanding performance for safer operation than other

meters. In addition to the Dwell, Tach and Data Hold

feature, the Meter can be used to test the AC voltage,

DC voltage, DC current, resistance, temperature, battery,

duty cycle, frequency, diode and continuity.

This Meter complies with standards IEC61010: in pollution

degree 2, overvoltage category (CAT. II 1000V, CAT. III

600V) and double insulation.

CAT.II: Local level, appliance, PORTABLE EQUIPMENT

etc., with smaller transient overvoltages than CAT. III

CAT.III: Distribution level, fixed installation, with smaller

transient overvoltages than CAT. IV

Use the Meter only as specified in this operating manual,

otherwise the protection provided by the Meter may be

impaired.

International electrical symbols used on the Meter and

in this Operating Manual are explained on page 9.

Unpacking Inspection

In the event you find any missing or damage, please

contact your dealer immediately.

Open the package case and take out the Meter. Check

the following items carefully to see any missing or

damaged part:

Item Description Qty

Model UT107: OPERATING MANUAL

English Operating Manual

Test Lead

Point Contact Temperature Probe

Holster

9V Battery (NEDA1604, 6F22 or 006P)

1 piece

1 pair

1 piece

Safety Information

Model UT107: OPERATING MANUAL

Rules For Safe Operation

Warning

To avoid possible electric shock or personal injury,

and to avoid possible damage to the Meter or to the

equipment under test, adhere to the following rules:

Before using the Meter inspect the case. Do not

use the Meter if it is damaged or the case (or part

of the case) is removed. Look for cracks or missing

plastic. Pay attention to the insulation around the

connectors.

Inspect the test leads for damaged insulation or

exposed metal. Check the test leads for continuity.

Replace damaged test leads with identical model

number or electrical specifications before using

the Meter.

When using the test leads, keep your fingers

behind the finger guards.

Do not apply more than the rated voltage, as

marked on the Meter, between the terminals or

between any terminal and grounding.

To avoid harm to yourselves, never attempt to

input an effective voltage over 60V in DC or 30V

in AC.

Use the proper terminals, function, and range for

your measurements.

The rotary switch should be placed in the right

position and no any changeover of range shall be

made during measurement is conducted to prevent

damage of the Meter.

Disconnect circuit power and discharge all high-

voltage capacitors before testing, resistance,

diodes or continuity.

Before measuring current, check the fuse is ok.

Before connecting the Meter in serial to the tested

in-circuit, disconnect in-circuit power.

Model UT107: OPERATING MANUAL

If the value of current to be measured is unknown,

use the maximum measurement position, and

reduce the range step by step until a satisfactory

reading is obtained

Replace the battery as soon as the battery indicator

appears. With a low battery, the Meter might

produce false readings that can lead to electric

show and personal injury.

When servicing the Meter, use only the same

model number or identical electrical specifications

replacement parts.

The internal circuit of the Meter shall not be altered

at will to avoid damage of the Meter and any

accident.

Soft cloth and mild detergent should be used to

clean the surface of the Meter when servicing. No

abrasive and solvent should be used to prevent

the surface of the Meter from corrosion, damage

and accident.

Turn off the Meter when it is not in use and take

out the battery when not using for a long time.

Constantly check the battery as it may leak when

it has been using for some time, replace the battery

as soon as leaking appears. A leaking battery will

damage the Meter.

Do not use or store the Meter in an environment

of high temperature, humidity, explosive,

inflammable and strong magnetic field. The

performance of the Meter may deteriorate after

dampened.

The Meter is suitable for indoor use.

Model UT107: OPERATING MANUAL

Automotive Servicing Safety Guide

Warning

As some automobiles are installed with safety air

bags, you must pay attention to the cautions in the

automotive servicing manual when you are working

around the components and wiring of the air bags,

or any carelessness will open an air bag, resulting

in some personal injury. Note that the air bag will

also be opened for a few minutes after the ignition

lock is closed (or even when the automotive battery

is cut off), which is driven by the special energy

reserve.

Wear protective eyeglasses which meet safety

requirements.

Operate the automobile in a well-ventilated place so

as to prevent the inhalation of any toxic tail gas.

Keep your own tools and testing instruments far from

all the heater components of the operating engine.

Ensure that the automobile has stopped (automatic

transmission) or put into neutral gear (manual

transmission) and be sure that it is equipped with

brakes and the wheels have been locked.

Do not place any tool on the automotive battery which

will cause a short circuit of the electrodes and in turn

lead to any personal injury or damage to a tool or

battery.

Smoking or striking a light near the automobile is

prohibited.

Pay attention to ignition coil, an ignition lead or a

spark plug socket because these components are

provided with high voltages when the automobile is

operating.

To connect or cut off an electronic component, close

the ignition lock.

Pay attention to the automotive producer’s cautions,

notes and servicing procedures.

To prevent an accident from causing any personal

injury or any damage to an automobile or any of its

meters, please read the following safety guidelines

and testing procedure in earnest:

Model UT107: OPERATING MANUAL

A. The data of the automotive servicing manual have

originated from the automotive servicing information.

Contact the local distributors of automotive components.

Contact the local retailers of automotive components.

Contact the local libraries to look up any book for the

proofreading of your automotive servicing manual so as

to provide you with the latest information.

B. Before the diagnosis of any trouble, open the

engine hood to make a thorough visual inspection.

You will find the causes for many of your problems

to be solved, which will save you a lot of time.

Has the automobile recently been serviced? Has the

same problem sometimes occurred where the trouble

lies?

Do not try to find any short cut. Check the hoses and

leads where it is probably very difficult to find out

where any trouble lies.

Check any trouble with the air purifier or pipeline

system.

Check any damage to any sensor or the driving gear.

Check the ignition lead: any breakage of any terminal,

crack on any spark plug or breakage at the insulation

of the ignition lead.

Check all the vacuum hoses: any right line, shrinkage,

bend, crack, fracture or damage.

Check the leads: any connection of sharp edges,

connection of hot surfaces (such as exhaust manifold),

shrinkage, burn or scratch at the insulation or right

line connection.

Check circuit connections: any pin corrosion, bend or

damage, inappropriate connection position or damaged

electrode lead.

All the information, explanations and detailed

descriptions in the operation manual have originated

from the industrial information recently published.

It is impossible to prove the accuracy and

completeness of the information, of which we shall

not be responsible for the assumption.

International Electrical Symbols

AC (Alternating Current).

DC (Direct Current)

Grounding.

Double Insulated.

Deficiency of Built-In Battery.

Fuse.

Warning. Refer to the Operating Manual.

Conforms to Standards of European Union.

Model UT107: OPERATING MANUAL

The Meter Structure (see figure 1)

1. LCD display 2.Data Hold button

3. Rotary Switch 4. Input Terminals

5. Power button

(figure 1)

Model UT107: OPERATING MANUAL

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