Power Steering Pressure Sensor Testing (applies to all psi sensors) - Toyota (P0550)

This video can be used to support chapter 8 in my book and the procedures shown can be applied to all types of pressure sensors. (MAP, power steering, transmission, BARO, fuel pressure etc) In this video we’re following up on a previous video, in which we found a poor engine ground. This time, we’re using some simple voltage tests on a three-wire pressure sensor to verify wiring and signal circuit integrity. No ohmmeter, wiring diagram or flow charts required! Engine Performance Diagnostics chapter 8 Symptoms - check engine light (P0550) Fix - replace power steering pressure sensor Tests shown - using scan data - distinguishing between a current (hard fault) and history fault (soft fault) - identifying the type of sensor based on the number of wires used - how to understand circuit design based on the type of sensor - using a scope to test a 5V sensor for supply, signal and ground - how to verify your scope connection to a circuit - verifying signal circuit integrity with signal voltage fixed low Tools used - scan tool - lab scope Playlist - (Chapter 8) Pressure Sensor Testing, MAP, BARO, DPFE, fuel tank and rail pressure sensors https://www.youtube.com/playlist?list=PLAFYVCyenqcoFWIaYzFZcB5PX5iOMiDTQ Related videos - Poor running, flashing CEL, no codes (bad computer ground) - Toyota https://youtu.be/44dP6X3QS5A - How to test TPS wiring with a scan tool (any car) https://youtu.be/VhyNp7IsfQM - How to test throttle position sensor wiring with a resistor (any car) https://youtu.be/oZiroWQRgEc - How to troubleshoot an EVAP Pressure Sensor problem P0452 - GM https://youtu.be/CkgrMasd57s - No Start from a shorted MAP sensor (Honda, Acura) https://youtu.be/za13UnpbH7E For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere! Disclaimer: Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.