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Hybrid and Electric Vehicle Case Studies by Matt Lamontagne

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“Hybrid & Electric Vehicle Case Studies" by Matt Lamontagne offers detailed real-world case studies highlighting common issues you might encounter when servicing hybrid and electric vehicles, such as, No Ready diagnosis, hybrid-specific crank/no start issues, plug-in hybrid charging faults and the special diagnostic considerations for ICEs in hybrids.

In addition, this book provides a good foundation in high voltage theory necessary for HV isolation loss diagnosis, battery and motor/generator repairs and more.

It is an excellent resource for any technician looking to master the intricacies of hybrid and electric vehicle maintenance and repair.
• Understand high voltage isolation loss diagnosis and testing
• Understand high voltage battery diagnosis and repair
• Comprehend high voltage motor/generator diagnosis and repair
• Develop a foundation for No Ready diagnosis
• Familiarize with the unique challenges of hybrid crank/no start diagnosis
• Understand basic plug-in hybrid charging faults
• Learn the unique internal combustion engine diagnosis considerations for hybrids

The printed manual is 139-pages, full-color, 8-1/2" x 11" coil bound.
Table of Contents
2007 Toyota Camry Hybrid – No Ready
Interlock Circuit
Proper Service Disconnect Installation
2013 Nissan Leaf – No Ready
HV Battery Removed for Inspection
HV Battery Cover Removed for Testing & Inspection
HV Battery Interlock Lab Scope Testing
2009 Toyota Prius – Strange Hybrid Battery Scan Data
KOEO Doesn’t Work for Hybrids
Strange Scan Data
Always Check The 12-Volt
Toyota 12-Volt Battery Chart
2015 Hyundai Sonata Hybrid – Died While Driving
High Voltage Relays
Hyundai Service Information – Contactor Sequence
Lab Scope Testing
Ready Up Attempt Scope Capture
Scope Capture Zoomed
High Voltage Battery Scan Data
High Voltage Isolation Scan Data
Service Information – HV Battery Schematic
Service Disconnect Fuse Check
Lab Scope Capture with New Service Disconnect
2007 Toyota Prius – No Ready
Check Detail Codes for Direction
Always Start with a Visual Inspection
Damaged HV Cables Must Be Replaced
2002 Toyota Prius – Warning Lights On
Prius Transaxle Construction
Prius Transaxle Operational Modes
Motor/Generator Construction
In-Car Stator Replacement
Post Fix Scan Tool Test Drive
2014 Toyota Prius – No Ready
Theory & Operation – Reference Guide
Interlock Circuit
Toyota 12-Volt Battery Chart
High Voltage Relays
Toyota Detail Codes
Prius Transaxle Construction
Prius Transaxle Operational Modes
Motor/Generator Construction
Static Hybrid Battery Evaluation – Delta State of Charge
Short Wave Highest Value
Hybrid Crank/No Start Diagnosis
Prius Hybrid Cooling System
Prius Hybrid Coolant Pump Quick Check
Milliohm Meter
Electric Vehicle Supply Equipment
EVSE Types
SAE J1772
PTC Heaters
Heat Pump System

About the Author
Matt Lamontagne is an ASE-Master Tech with L1 and L3 certifications and over 15 years of experience. He is the lead technician and manager of Leo & Sons Auto Repair in Lawrence, MA and specializes in hybrid and electric vehicles. Matt is also the founder and lead instructor for the HiVo Group, a hybrid and electric vehicle training and consulting company. Matt also serves as an instructor for the Automotive Career Development Center, WorldPac, and ASI, and has taught students from across the world about the unique systems of hybrid and electric vehicles. As an EV driver himself, Matt is dedicated to furthering the knowledge of high voltage technology and electric vehicles.


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