TechnicianVision · Knowledge base
Powertrain Overview: Plug-In Hybrid Electric Vehicle (PHEV)
I-CAR · April 9, 2019
Summary
This article provides an overview of Plug-In Hybrid Electric Vehicle (PHEV) powertrains, highlighting how they combine a gasoline engine with a larger high-voltage (HV) battery that is charged via an external outlet. It emphasizes the critical safety and technical requirements for repairing these vehicles, including disabling the high-voltage system, isolating the 12V battery during welding, and servicing separate cooling and HVAC systems.
What to do on the job
Properly disable the high-voltage battery according to the manufacturer's service information before performing any repairs, and disconnect and isolate the 12V battery prior to welding.
How to use it
Use this document to justify line items on estimates and supplements for high-voltage disabling/enabling procedures, 12V battery isolation during welding, and specialized operations such as servicing dedicated hybrid cooling systems and using non-conductive A/C compressor oils.
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