ECM Reference Voltage Simulator or Blue-Voltage regulated Ground, 5 and 8 volt provider. It's also a CAM, Crank, Wheel-Speed and universal speed sensor simulator.

Why the BLUE-VOLTAGE-SIMULARTOR? It is exactly what the ECM puts out. Have you ever wondered, "gosh, I'd like to test this sensor (TPS, EGR, CAM-CRANK, etc), but I don't want to accidentally SHORT the ECM?" That's why the BLUE-VOLTAGE-SIMULATOR was created! Use it with Key-Off-Engine-Off, as a reference voltage. NO SHORT possible; yes the BLUE-VOLTAGE-SIMULATOR is totally protected against shorts. So, connect it to the battery and short the 5 or 8 volt leads to Ground, no problem, protected. Can be used to test any position or speed sensor that works on 5 or 8 volts and about 200mA of power. Completely regulated power supply electronics for rock solid operation. It also has a SPEED SENSOR output that can simulate any CAM, CRANK, WHEEL-SPEED or any other type of sensor, with a 5 volt, short-proof, square wave output. It works even on magnetic sensor systems (sine-wave).

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BLUE-VOLTAGE Reference & Crank/CAM/Speed sensor Simulator
(Includes all cables & carrying case or bag)

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ECM Reference Voltage


The Electrothrottle diagnostic unit seen here is an industry first. It allows you to diagnose and clean electronic throttle control or E.T.C. units by actuating or opening the throttle. That being said, you also need to diagnose or prove the dual throttle position sensors built into the modern electronic throttles. For the purpose of diagnosing the internal TPS, we have created a new unit. It is called, the Blue Voltage Reference Voltage Simulator. The Blue Voltage does exactly that, it simulates the ECM provided sensor voltage. It is a rock solid voltage regulator unit. It is also short proof, so you can short the Blue Voltage Simulator and no damage will occur to it.

The Electrothrottle and the Blue Voltage Simulator are both used in conjunction with each other. Next, we’ll show you how to use the Electrothrottle and the Blue Voltage Simulator, together with a common graphing multimeter or oscilloscope.

First we connect the Electrothrottle to the two motor control terminals. Polarity does not matter, as you will be able to flip the switch and change it later.

Next, we connect the Blue Voltage Simulator ground and 5 volt reference terminals. These two also, for the purpose of testing, can be connected regardless of polarity. What you are looking for is the signal output from both of the TPS or throttle position sensors. One signal will go from low or ground to 5 volts, and the other signal will do the opposite. So, connect the ground and 5 volt reference, and do not worry about polarity.

Lastly, you then connect your multimeter, graphing multimeter, or scope, to one of the TPS signal outputs. A graphing meter or scope is the best option, since it is hard to just look at the changing digits on the meter.

As you can see, as we turn or operate the Electrothrottle knob, we see the E.T.C. electronic throttle actuation in action. This is done with the engine and ignition key off. We are now simulating all aspects of the ECM engine control module. We are providing the sensor ground, 5 volt reference, both using the Blue Voltage, and we are also providing the electronic throttle E.T.C. actuation commanded control signal. This is Bi Directional control at its best.

Just remember that most E.T.C. throttle bodies have at least two TPS sensors for redundancy. So, the two signal are going to be inverse to each other.

The Electrothrottle and the Blue Voltage Reference Simulator is an unbeatable automotive diagnostic pair, providing E.C.M. level regulated sensor voltage and and actuation.

NEW-DEVELOPMENT: The Blue-Voltage now has a CAM-CRANK-WHEEL SPEED Sensor Output. It can be used to inject any speed sensor to the ECM. The output is a 5 volt regulated, short-proof square waveform at about 400 Hz or about average speed for any system. Use the SPEED SENSOR output to test ABS, CAM, CRK, WSS (wheel speed sensors), transmission ISS-OSS or any system with a speed sensor. You can even use it to test systems with MAGNETIC 2 Wire Sensors. The ECM sees the square wave as a sine waveform (you may need to ground one leg of the magnetic speed sensor). This is a nice multipurpose unit.

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ECM Reference Voltage  ECM Reference Voltage

ECM Reference Voltage  ECM Reference Voltage

ECM Reference Voltage  ECM Reference Voltage

ECM Reference Voltage  ECM Reference Voltage

ECM Reference Voltage  ECM Reference Voltage

ECM Reference Voltage  ECM Reference Voltage

ecm reference voltage speed sensor simulator  ecm speed sensor simulator

automotive speed sensor simulator  automotive speed sensor simulator

automotive speed sensor simulator

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copyright Mandy Concepcion, Automotive Diagnostics and Publishing