Engine Solenoid Ohm Tester

This Engine Solenoid Ohm (ESO) Tester aids in the diagnosis of individual electro-mechanical components by measuring their electrical resistance. The tester LCD displays the status of the component based on the result of the tests performed. Using it, mechanics will save valuable time as it eliminates the need of going through the schematic diagram on the user manual for the corresponding resistance values.

Exclusive Inventions

1. Convenient, quick and precise Resistance check with 0.01 Ohm resolution that no other ordinary Multimeters available in the market are able to match its performance. This tool provides preliminary diagnosis on Common Rail component failure before getting involved with professional diagnostic equipment like oscilloscope or related equipment during troubleshooting of engine problems for in-depth diagnosis.

2. Algorithm- It has relevant resistance values and algorithm which were programmed within the software to determine the results instantly whether PASS, Shorted, etc. This is helpful for Technicians and DIY enthusiasts to troubleshoot engine faults without the need of referring to technical documents due to scarcity of these resistance information.

Unique Features / Application

1. Better accuracy- its resistance measuring range is only up to 20 Ohms maximum, this enables to differentiate the conditions of the results instantly whether Defective, Low Ohm, Pass, Check, High Ohm, Bad Coil or Replace

2. Zero calibration – allows to perform zero calibration by touching leads to ensure test results are always in its optimum accuracy

3. Measures up to 2 decimal points (0.00)- most Multimeters found in the market have the resistance measurement resolution only up to 0.1 Ohm.

4. Auto switch off – automatically shuts off power if the device is not in use after 12 minutes to conserve battery power.

5. Battery Low Power indication – it indicates when battery power is low  

6. Battery operated with 3pcs AA 1.5

Test Functions

To perform the test is easy, simply disconnect one of the two wires connected to the solenoid coil before the measurement is performed no need to remove it from the electrical circuit.

It is able to perform the following Tests that is related to Common Rail System problems:                           

Applications

It is designed to test the resistance of common rail systems  as illustrated below:

Specifications

Screen Display ………………………………Blue monochrome LCD (128 x 64 Pixels)

Ohms measurement range .........................20.00 Ohms (max)

Ohm Resolutions …………………………….0.01 Ohm

DC Volts Accuracy: …………………………..± 3% Reading

Working Temperature: ……………………….0 °C (32°F) ~ 50 °C (122 °F).

Working Humidity: ……………………………10 ~ 80 %

Power supply (Internal Batteries) …………..4.5 Vdc (1.5V x 3pcs common AA Dry Cells)

Frequently Asked Questions (FAQ)

Q: Do ESO Tester functions can be done using normal Multimeter?

A: Most of the ESO Tester functions can be done using Multimeters but only those that can measure up to 2 decimals (0.00 or mOhm) can be used. The setback is that most Multimeters found in the market have the resistance measurement resolution only up to 0.1 Ohm.

The accuracy of ESO Tester is much better (compare with Multimeter) in the sense that its resistance measuring range is only up to 20 Ohms maximum and is able to differentiate the conditions of the results whether Defective, Low Ohm, Pass, Check, High Ohm, Bad Coil or Replace after the test. For instances, the testing resistance values of Bosch common rail solenoid valves - CP1, PCV, Quantity control valves ZME – CP3 & CP1H and Delphi - IMV were programmed in its algorithms that can determine the results instantly without the need of referring other technical documents.

This is why this tool will be very helpful for inexperience Technicians or DIY enthusiasts to get the first clue during troubleshooting diagnosis of the engine faults and its operations are fast, simple and convenient.

Q: Where to find all the resistance reference values of all parts that ESO Tester  can measure to compare?

A: Due to the scarcity of the information on the resistance reference values of Common Rail System tests, ESO Tester  was developed to solve this problem to help Technicians and DIY enthusiast in troubleshoot engine faults with ease without references made to available technical documents or not. The relevant resistance values that we gathered were programmed within the software to determine whether the results were PASS, Shorted, etc., instantly.