Additional EScope Screen Shots 3
Click on thumbnail screens below to see full size image
2: This is the same waveform that has the Honda logic problem spike but the format has been changed. Note the yellow trace spike aligns with the falling edge of the module signal. This occurs when the coil is fired.
1: This stacked chart shows the injector signals on top and the timing signals that are sent to the COP module. Note the yellow trace has a downward spike.
3: This is the ignition coil secondary arcing to the primary. This high voltage entering the primary circuit was causing an intermittent stalling problem by putting the PCM into a reset.
4: The yellow, red, green, and blue traces are the signals to the ignition modules in the coil on plug system. The white and purple traces are timing signals sent from the distributor.
5: The purple trace is the timing signal from the distributor. Note the yellow, red, green, and blue traces are the signals that are sent to the ignition modules in the coil on plug system. When signals are laid on top of each other it becomes easier to see which signal affects other signals.
6: This GM 3100 was missing. When checking the injector voltage waveform the green trace does not have the closing bump which indicated the injector did not open.
7: This PT Cruiser was towed in. When the injector voltage waveform was checked, three of the four injectors showed low current. The green trace shows the proper current. The connector under the intake had a bad connection.
8: This Nissan was missing. When the injector voltage waveforms were checked the current in the yellow trace was low. The green trace shows proper current. The connection was bad at the injector.
9: These signals are off of a Jeep computer controlled carburetor.
10. This is a Ford Contour with two time bases being displayed. The yellow trace is the MAF sensor signal. The red trace is the O2 sensor signal. The green trace is the TPS sensor signal. Note on the top chart the humps in the yellow trace are the individual cylinders pulling air past the MAF sensor.
 
 
 
 

Copyright © 2002-2010 Automotive Test Solutions, Inc.
Phone: 505-265-5077, Toll-Free: 800-572-6112, Fax: 866-422-2931
515 Wyoming SE Suite A, Albuquerque, NM 87123