Automotive ET3334 User manual

Brand: Automotive

Model: ET3334

Type: User manual

Automotive ET3334 aids with locating short & open circuits, as well as identifying individual wires in the wiring harness. For use on DC circuits ONLY. Battery powered for easy use in hard to reach areas.

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Automotive Circuit Tracer

ET3334 Circuit Tracer Instructions

Fault Finder Transmitter Fault Finder Receiver

1. INTRODUCTION

This auto circuit tracer aids with locating short & open circuits, as well as identifying individual

wires in the wiring harness. For use on DC circuits ONLY. Battery powered for easy use in hard

to reach areas.

2. CAUTION BEFORE OPERATION

● Use with DC voltage only.

● DC voltage must not exceed 42V.

● You must NOT connect with AC voltage.

● Do not connect to the ignition circuit / system.

● Do not connect with pulse sensitive circuits like air bag, electronic control modules, etc.

● Please read the vehicle’s service manual before operation.

● Please switch on the transmitter before connecting to any circuit.

3. SPECIFICATIONS

Specications

Ambient operating range 0°C to 40°C (32°F to 104°F)

Relative humidity 10-95% RH noncondensing, @ up to 30°C (86°F)

Storage temperature -20°C to 60°C ,≤ 85%RH, without battery

Power supply 9V Battery

Weight / Dimensions (Body)

(Not including battery)

Transmitter 135g, 150*68*27mm

Receiver 140g, 150*68*27mm

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Automotive Circuit Tracer

4. OPERATION

4.1 Install the 9V battery:

Open the receiver and transmitter battery doors.

Insert new 9V batteries.

4.2 How to use the probe: see Fig 1.

4.3 How to use the transmitter:

Switch on the power by pressing “On/O” button. If the circuit is “open”, the green LED

will ash. If the circuit is “short”, the red LED will ash. Long press “On/O” button for

3 seconds to power down the unit.

CAUTION: The transmitter MUST be switched on before connecting to the

vehicle. The power MUST be switched o after disconnecting from the vehicle.

Otherwise, the fuse may blow when the tester is connected with a shorted circuit.

4.4 How to use the receiver:

1. Short press the “On/O” button to power on the unit. Long press the “On/O” button

to adjust the sensitivity.

2. The green LED “OPEN” indicator will stay lit (not ashing) when the power is on.

3. The green LED will start ashing when the receiver senses the signal from the transmitter.

4. The sensitivity will be on the weakest level when the power is switched on. Long press

the “On/O” button until the buzzer sounds twice / LED ashes twice. This indicates the

sensitivity is set to medium. Long press the “On/O” button again (until buzzer sounds

three times / LED ashes three times). This indicates the sensitivity is set to the highest

level. The sensitivity will rotate when the above operation is repeated.

5. For illumination (white LED), press the “Light“ button. Press again to turn o.

6. The green LED will keep ashing when receiver traces an “open” circuit. Red LED will

keep ashing when receiver traces a “short” circuit.

7. Short press the “On / O” button to turn the receiver unit o.

4.5 How to connect with the fuse socket: see Fig 2 ang Fig 3.

4.6 How to trace a “short”:

1. Switch on the receiver unit, with the sensitivity set to low.

2. Connect the two wires to the fuse socket; or connect the black wire to the (+) positive

of the battery, and connect red wire to the other terminal which is connected with the

system (Please refer to Fig. A and Fig. B). If circuit is short, the red LED will ash.

3. If it is dicult to nd the “short”, increase the sensitivity, and repeat 2). if the circuit is under

short condition, receiver will sense “short”, the red LED will ash / buzzer will sound.

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Automotive Circuit Tracer

4.7 How to trace an “open” circuit:

1. Switch on the receiver unit, with the sensitivity set to low.

2. Connect the two wires with the fuse socket; or connect the black wire to the (+) positive

of the battery, and connect the red wire to the other terminal which is connected with the

system (Please refer to Fig. A and Fig. B). If the circuit is open or normal, the green LED on

the transmitter will keep ashing.

3. Move the receiver along the circuit slowly. If the circuit connecting with the transmitter is

normal, the green LED on the receiver will keep ashing all the way, and the buzzer will keep

sounding. If any “OPEN” appears on the circuit, the green LED on the receiver will stop

ashing near the “OPEN” position.

4. If it is dicult to nd the “OPEN” circuit, increase the sensitivity, and repeat step 3) based on

the setup shown in Fig. A, Fig. B, Fig. C, & Fig. D. If the circuit is open or if the wire is the one

being traced, the green LED will keep ashing / buzzer will keep sounding.

4.8 How to trace wires:

Perform the same operation as 4.6 / 4.7. Along the wire, on the receiver unit, the LED will ash / buzzer

will sound. If the buzzing and ashing frequency become slower, that means the receiver is away

from the wire being traced. If there is no sound / ashing, the signal may be insulated

or receiver may be too far away from the signal. Try again using a higher sensitivity.

4.9 How to identify wires:

Perform the same operation as 4.6 / 4.7. The wire with the signal should cause the receiver

to buzz / ash when moved near it. If the wire is contained within a bundle, it may be necessary

to separate them (due to cross signals, other wires may receive a weak signal as well).

If this occurs, the wire with the strongest buzzing sound / ashing frequency, will be the one

connected to the transmitter.

4.10 Connection reference:

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Automotive Circuit Tracer

4.11 Tracing multiple loads:

When tracing a wire with multiple loads (refer Fig. E), it is better to disconnect all the other

unneeded loads. This is because the signal from the transmitter will ow along the whole

circuit and there may be too many loads, based on the circuit layout and loading circuit, this may

reducethe the signal strength and make it harder for the receiver to pick up the signal. The less

being traced, the easier it will be to get an accurate result.

4.12 When to change the battery:

Both red and green LEDs will ash and then power o automatically if the battery is low.

5. MAINTENANCE:

WARING! DO NOT attempt to repair or service this tool unless you are qualied to do

so. To avoid damage do not get water inside the case.

1. Periodically wipe the case with a damp cloth and mild detergent. Do not use solvents.

2. Turn the sender and receiver units o when not in use and remove the batteries if stored

for an extended period of time.

3. Do not store in a place of high humidity or high temperature.

4. To replace the batteries on either the sender or the receiver units, simply open the rear

battery cover and replace with a 9V battery.

2202AC

Fig. E

Automotive ET3334 User manual

Brand: Automotive

Model: ET3334

Type: User manual

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Automotive ET3334 User manual

Automotive ET3334 User manual

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