ELPOWER SCRIPT

The ElPower script is designed to diagnose the vehicle starting and charging system, as well as to measure the relative compression of the cylinders of gasoline and diesel engines.

In the process of analyzing the voltage waveform at the battery terminals and the current waveform obtained through the use of a current clamp, the ElPower script generates multiple report tabs, where it displays a number of the measured and calculated characteristics of the system components. It also provides an assessment of the consistency of the battery characteristics with the characteristics of the starter. If it detects any deviations or malfunctions, the script automatically displays appropriate messages.

This test allows you to check the characteristics and condition of:

• Battery
• Glow plugs of a diesel engines
• Starter
• Relative compression in the engine cylinders (can be measured without the use of a current clamp)
• Alternator

Signal recording order

• Connect to the "–" terminal of the vehicle battery the black alligator clip, part of the USB Autoscope IV power cord
• The measuring adapter, using a small alligator clip, connects to the terminal "+" of the battery and connects to input #1 of the USB Autoscope IV
• Connect the current clamp to input #4 of the USB Autoscope IV using a PIN3 Banana adapter. Move the switch on the current clamp to the "600A 1mV/A (1000A 1mV/A)" setting
• In the USB Oscilloscope program choose "Modes => ElPower => ElPower"
• Position the current clamp so the jaw surrounds all of the wires emanating from one of the battery terminals. Orient the current clamp so the "+" mark points in the direction of the current flow using the conventional theory of current flow
• Perform zero calibration by turning the potentiometer on the current clamp body. Adjust until the signal from the current clamp is in the middle of the red zone on the oscilloscope screen (or press zero button).
  This should be done before starting the waveform recording!
• Start the waveform recording by pressing the "Record" button on the USB Oscilloscope program
• Close the jaws to embrace all the wires emanating from one of the battery terminals (jaw tightly)
• Turn the high beam headlights on for 3…5 seconds, then turn them off. In case of difficulty, instead of high beam headlights can be switched on turn signal lamps
• Turn on the ignition
• Wait a few seconds for the fuel pump to shut back off. If the vehicle is equipped with a diesel engine, wait for the glow plugs to shut off
• Start the engine (If the engine does not start, continue cranking for 5 to 10 seconds)
• After 5 to 10 seconds, turn the high beam headlights back on for 3 to 5 seconds (or turn signal lamps)
• After another 3 to 5 seconds, turn off the ignition
• Remove the current clamp from the power wires and bring the jaws directly to the power wire from the battery terminal. Place the clamp in a position close to the one in which the measurements were taken
• Turn off the recording by clicking the "Stop" button on the USB Oscilloscope screen. This action must be performed after removing the clamp from the power wires!
• If necessary, the recorded waveform can be saved using the "File => File save"

Documentation

	ElPower script – Manual
	ElPower script – Case studies
	ElPower script – Common errors
	An analysis of battery voltage and current waveforms

Waveform examples

	The USB Oscilloscope program is required for waveform playback
	ElPower - OK
	ElPower - Worn out battery - Renault Kangoo 1.5 dCi
	ElPower - Starter brushes arcing
	ElPower - One phase is missing
	ElPower Diesel - Faulty Glow plugs
	ElPower 24V - Volvo FH13 480 E4