A common problem with these EVAP vent valves is a broken wire inside of the insulation! The wiring will look completely fine until you pull on the harness. In this video I will show you how to troubleshoot and repair this condition.
Engine Performance Diagnostics chapter 3
Symptoms
- check engine light (P0449 trouble code)
Fix
- repair broken wire to the EVAP vent solenoid
Tests shown
- how to repair a broken wire right at the connector
- how to repair a wiring connector
- how to test an EVAP vent solenoid (valve)
- how to determine power and ground side switching
- how to test the computer driver (transistor)
- how to use scan data to ID an open circuit
- how to use the "driver test" mode in the Power Probe IV
- how to use a scan tool in a bi-directional test mode
Tools used
- AES' Electronics Accupuncture Probes www.aeswave.com...
- Power Probe IV
www.aeswave.com...
- Power Probe Lead Set (PPLS01)
www.aeswave.com...
- Autel MaxiSYS MS908 Diagnostic System with Wireless VCI
www.aeswave.com...
- Permatex 85120 Liquid Electrical Tape 4Oz - Each
www.jbtoolsale...
- Irwin 2078300 8" Self-Adjusted Wire Stripper
www.jbtoolsale...
- Xscorpion HSBCR Heat Shrink Butt Connectors 18/22Ga;50/Bag;Red
www.jbtoolsale...
- Weller PSI100K Portasal Butane Soldering Iron Kit
www.jbtoolsale...
Related videos
- 1997 Dodge Neon no start, crank sensor problems (repair of broken wires at the crank sensor connector shown)
• 1997 Dodge Neon no sta...
- (EVAP) Vent Solenoid Control Circuit P0449 repair - GM
• (EVAP) Vent Solenoid C...
- How to test an EVAP Vent solenoid (applies to all cars) - GM
• How to test an EVAP Ve...
- 2008 Chevy Avalanche EVAP Vent Solenoid Test (P0449, P0455)
• 2008 Chevy Avalanche E...
Playlist
- EVAP System Testing
• EVAP System Testing
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 www.scannerdan... 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.
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