To learn more troubleshooting techniques go to www.scannerdanner.com
Once again, this video covers why we need to learn proper troubleshooting techniques and to not be so reliant on manufacturer "flow charts". If you think your engine computer is bad, you must watch this video! Are there more tests that can be done to prove a computer is bad? What else should you check before computer replacement?
The following is a list of other tests and how to checks that were performed in this video:
1. How to test a 24x hall effect crank sensor
2. How to test sensor wiring integrity (both opens and shorts to ground)
3. How to test a hall effect cam sensor
4. How to test computer powers and grounds.
5. What is a shared reference circuit?
6. What do you do when you have low reference or power supply voltage to a hall effect?
Transmission No Shift Case Study (P0888)
To learn more of testing procedures shown in this video, go to
This is a 2002 Dodge Caravan that is stuck in second gear. This is known as
limp home mode or transmission limp mode. In this video I cover the
How to test a computer controlled relay
How to do a loaded circuit voltage drop test
How to determine if a relay is power or ground side controlled.
How to test for an open circuit
Why the computer enters limp mode
P0888 Flow Chart
Transmission wiring diagram overview
Transmission solenoid power
1996 Jeep No Start Case Study Part I
An example of what we do at Rosedale Technical Institute in Pittsburgh, PA.
This is an all live work school, no make-believe car problems here! My
students and I used this oppurtunity to review certain concepts and testing
proceedures written in an Engine Performance/Troubleshooting book I wrote
for my class.
Honda Civic 1.7 (start, run, stall case study)
For more on no start diagnostics go to www.scannerdanner.com
A special thanks to the following for outstanding information and support:
International Automotive Technician Network (iATN)
This video covers a wide range of testing procedures. The following are
How to test fuel pressure
How to test for injection pulse with a test light
How to test for a plugged Exhaust
How to test to see if you are losing spark
How to test compression
How to test for compression using an in-cylinder pressure transducer
How to test cam timing
How to test an electric fuel pump
2001 GMC 3500 8.1L engine with no fuel pressure. In this video I am showing
how to test the fuel pump electrical circuit using a test light and scan
2000 Chevy S10 2.2L No Start (Part I)
For more on Engine Performance Diagnostics check out www.scannerdanner.com
This video is part one of a two part series. The following testing methods
How to check for spark, how to test if an engine is getting fuel when a
test port is not available, how to perform a relative compression test with
a picoscope, how to test if ignition timing is correct using a scope, how
to test a 7x crank sensor, and how to test a hall effect cam sensor.
I also show some of variables to the relative compression/timing test and
how the results at times can be misleading.
How to Test Crankshaft and Camshaft sensors 1
How to Test Crankshaft and Camshaft sensors 1
Amazon Printed Books
Amazon Kindle Edition
Shows the operation and testing procedures of automotive cam and crk
sensors, which supply the ECM with engine camshaft and crankshaft position.
These two signals are essential for the engine to run. (note: We allow all
schools and training institutions to use our software free of charge, so
long as it is not sold to others. You're encouraged to download our free
automotive simulation software for more information.
Amazon Printed-Books & Kindle:
Google Play Android APPs:
Amazon Video DVDs:
Barnes & Noble Nook:
Apple iTunes iPad:
2000 Chevy Malibu MAF Ground problem
This is a good video on how to check sensor grounds using a voltmeter. Once
you get more comfortable with this type of testing, it is far more accurate
than the ohmmeter. The key though is to make sure the circuit you are
testing is "loaded".
Also to all of you "free diagnostics" parts supply companies. YOU CANNOT
CHANGE A PART BASED ON A TROUBLE CODE!!!!!
Ford O2 Sensor Testing
For more on O2 sensor testing go to www.scannerdanner.com
In this video I address the following:
How to determine if the O2 sensor is reading correctly
How to perform a propane enrichment test
How to determine if an O2 sensor circuit has a bias voltage
How to reset KAM memory and why it it important to remember to clear it
How to quickly check for opens and shorts in an O2 signal circuit
Why is it important to unplug an O2 sensor during a PCM response test and
when to consider plugging it back in
How much amperage are you actually sending to the computer through your
Can this PCM response test be done with a test light
2002 Ford Escape 3.0 Misfire Case Study
Within this video I am covering parts of Section 1 and Section 22 in my
eBook available at www.scannerdanner.com. For more on the Picoscope and the
WPS500 pressure transducer I am using go to www.picoauto.com.
Ford Taurus Cam Sensor Problems
This is a common problem on Ford systems that use this style of camshaft
sensor. In particular the 3.0 and 3.8L engines.
2003 Mercury Grand Marquis (how to test the cooling fan)
For more on Engine Performance Diagnostics go to www.scannerdanner.com
For this case study we have an electric cooling fan that will not turn off
on a 2003 Mercury Grand Marquis. In this video I cover all aspects of this
cooling fan system. From the inputs involved to the output controls and
detailed testing methods.
For more help with some of the terminology used and testing methods shown,
refer to Section 2 and 6 in my eBook available at www.scannerdanner.com or
the paper version available at www.aeswave.com