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Automotive Circuit Tracer
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
Ambient operating range
Relative humidity
Storage temperature
Power supply
Weight / Dimensions (Body)
(Not including battery)
ET3334 Circuit Tracer Instructions
Fault Finder Transmitter
Specifications
0°C to 40°C (32°F to 104°F)
10-95% RH noncondensing, @ up to 30°C (86°F)
-20°C to 60°C ,≤ 85%RH, without battery
9V Battery
Transmitter
Receiver
Fault Finder Receiver
135g, 150*68*27mm
140g, 150*68*27mm
-01-
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Summary of Contents for Automotive ET3334
- Page 1 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.
- Page 2 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/Off” button. If the circuit is “open”, the green LED will flash.
- Page 3 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.
- Page 4 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 flow 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.
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