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Summary of Contents for Power Probe ECT3000B
- Page 1 3000 USER'S MANUAL Diagnose Electrical Circuits Fast • Locate Shorts • Locate Opens • Test Intermittent Problems �OWER ® PROBE Power Probe...
- Page 2 Contents Congratulations ............................4 Parts ................................5 The SMART Transmitter ........................6 Characteristics of the Short/Grounded Circuit Signal ................8 Characteristics of the Open Circuit Signal ..................9&10 The SMART Receiver ........................... 11 Battery Installation ..........................12 Testing the SMART Receiver ......................... 12 Pulse Mode ..............................
- Page 3 Contents How to Trace Out a Short Circuit to Chassis Ground ................17 Isolate your Circuit ..........................18 Verify the Short Circuit to Ground ......................18 Short Circuit inside a Wire Harness ......................19 Reception Distance and What that Means ....................20 Tracing Circuits that are Shielded ......................
- Page 4 Thank you for choosing the Power Probe “ECT3000” (Electronic Circuit Tracer- 3000) The ECT3000 helps quickly locate wiring shorts and opens. The ECT3000 operates just like the trusted Power Probe ECT3000 now with many improvements in functions and features to increase circuit testing accuracy and speed. This instruction booklet will give you some valuable diagnosing tips gathered from the field and from our testing lab.
- Page 5 P P T K 0 0 0 3 P P T K 0 0 0 5 P P T K 0 0 0 6 P P T K 0 0 0 7 P P T K 0 0 0 8...
- Page 6 Transmitter The transmitter is designed to generate Grounded Circuit signals and Open Circuit signals. The grounded and the open circuit signals are very different from each other, so it is very important to understand the differences in each signal type. (see “Characteristics of the Short/Grounded Circuit Signal”...
- Page 7 After connecting the transmitter’s 20 ft. power lead to the vehicle’s battery, a signal is generated through the green signal wire and banana plug. This is connected to the circuit you want to trace. The signal will radiate along the circuit, which you can detect by using the receiver. There are two types of circuit signals that the transmitter generates.
- Page 8 Path of Least Resistance Characteristics of the Short/Grounded Circuit Signal: 1. Strongest when flowing exclusively through one wire Major portion of signal goes When the signal is conducting through only one wire, the signal into short (ground) strength is at its maximum because 100% of the signal is travel- ing through that wire exclusively to return back to the negative side of the battery.
- Page 9 A great alternative to the receiver in detecting open circuit signals is to Wet Carpet / Metal/ Shielding Wire Harness Wet Carpet/ Metal/ Shielding Wire Harness use the Power Probe III, IV, or Hook by direct contact. (see “Verify an Open Circuit” pg. 23)
- Page 10 (See: “Locking the Sensitivity for Open Circuits” pg. 14) You can also use the Power Probe III, or Power probe IV for open circuit signal detection by direct contact. (See: “Verify an Open Circuit” pg. 23)
- Page 11 Receiver The receiver is designed to detect the “Grounded Circuit signals” and the open circuit signals from the transmitter. Auto shut-off feature The “Wire Harness Probe” is for probing The receiver will automatically shut-off a harness to detect the open circuit signal. within 10 minutes when it is NOT receiv- (See “Tracing Circuits that are Shielded”...
- Page 12 Battery Installation 1. To install the batteries, carefully remove two battery covers screws, remove the battery cover on the bottom of the receiver housing and insert (2) AAA batteries into the battery compartment. Be sure the polarity of the batteries are correct then replace the battery cover.
- Page 13 When the Receiver is in “pulse mode”: It detects both “grounded” and “open” circuit signals. It picks up and determines strong from weak signals by the pulse frequency rate. The sensitivity is ready to be locked in, by pressing the “Sense Lock / Sense Low” button. It detects and displays the direction to ground or a short circuit.
- Page 14 Locking the Sensitivity for Short/Grounded Circuits Fig. A To lock the receiver’s sensitivity for short/grounded circuits, it must be turned on and in “pulse mode”. Hold the “Open & Short Pick-Up” of the receiver parallel and as near to the wire as you can while achieving the most rapid pulse rate. (See: Fig. A) Now press the “Sense Lock/Sense Low button”.
- Page 15 Direction to the Short Direction indicator shows Direction indicators show The Short/Grounded Circuit signal is polar- direction to ground or short direction to ground or ized. This gives the receiver the information short. it needs to show you the direction to the short or the direction to ground.
- Page 16 How to Use the in Diagnosing Circuits Connection Accessories: Included in the ECT3000 are the following connection accessories. • Alligator Clip: for connecting onto any conductor such as a wire or a terminal. • Blade Probe: for tapping into fuse socket terminals and connectors. •...
- Page 17 How to Trace Out a Short Circuit to Chassis Ground A direct short to chassis ground that blows a fuse, is one of the simplest circuits to trace for one simple reason. The majority of the “Grounded Circuit Signal” travels THROUGH THE SHORT CIRCUIT TO CHASSIS GROUND making it easy to trace. This sometimes eliminates the need for isolating the circuit.
- Page 18 Verify a Short Circuit to Ground One of the best tools for verifying a short circuit to ground is the Power Probe 1, 2, or 3. To verify a short circuit connect the Power Probe to the circuit and press the power switch forward.
- Page 19 Short Circuit Inside a Wire Harness A common occurrence inside of wiring harnesses is that there are two wires running close and parallel to each other. One wire is the positive wire that flows one way and the ground wire that flows back the opposite direction. When the signal source runs closely parallel to the signal return, as in this case, they cancel each other and the signal strength is considerably reduced.
- Page 20 Reception Distance and What that Means. When tracing parallel circuits, you can determine if a one wire has a stronger “Ground- ed Circuit signal” present over another wire. The wire that has a stronger signal carries a larger current. This means the circuit that has the stronger signal also has a lower resistance compared to the other parallel branch.
- Page 21 Other wires can shield Wet carpet, metal, even Open circuit signals your own hand can shield Open circuit signals. Break / Open Plastic Harness Cover Wire harness probe lets you probe between the wires. Tracing Circuits that are Shielded: Quite often you will need to trace circuits in areas that are shielded from the receiver.
- Page 22 Open Circuit Signal vs Grounded Circuit Signal Open circuit signals can only be present in a circuit when there is a resistance of about 100 ohms or great- er. (Figure A) If a switch was to close in this circuit, (Figure B) the open circuit signals would cease to emit and the short/ Grounded Circuit signal would replace it.
- Page 23 Probe III or IVto the wire of the transmitting circuit. Contact the probe of the Power Probe III or IV to the open circuit with the open circuit signal applied to it. You should hear the 4 kHz tone from the Power Probe III speaker.
- Page 24 Bench Tracing a Wire Harness Not connected Not connected +Voltage connected connected There are cases where you may have a wire harness removed from the vehicle, sitting on Open Circuit Signal the bench, and tracing an open circuit. Wire harnesses that are removed from the vehicle’s electrical system have only floating wires in Fig.
- Page 25 Tracing out Battery Drains or Current Draw When you have a battery or current draw that is drawing enough current to drain the battery over night or a couple of days, you have a condition that the ECT3000 can assist you in. In cases like this you can inject a signal into the main positive battery cable after removing it from the positive battery post.
- Page 26 Circuit Wiggle & Flex Test At times it’s necessary to check for intermittent connection problems. The circuit wiggle test allows you to wiggle, twist, pull, push and flex wires or connectors and observe a circuit change. Wiggle, flex & pull the wire to The transmitter monitors the condition of the circuit and alerts you Wiggle, flex &...
- Page 27 page page Index 4 KHz polarized signal ........ 8 power lead ............ 6 accessories ..........16 power/sensitivity lock ........ 11 adapters ............16 pulse mode ..........12 applications of adapters ......16 receiver ............11 reception distance ........20 battery drains ..........25 reception sensitivity ........
- Page 28 RECEIVER TRRKSNIT Min Operating Voltage: 6 VDC Power Supply: 2 X 1.SV AAA Max Operating Voltage: 48 VDC Working Current: When not signal be detected <15mA Working Current: <200mA Power Consumption When Power Off: <10uA ° Working Frequency: 4KHz Max Operating Temp: °...
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