2024 Prius Prime PHEV Low-Voltage Charging System Testing

Video Description

Join me as I explore the low-voltage charging system used in the 2023 and later Toyota Prius Prime PHEV. I found something surprising, too. Learn which parts are involved, how they work, and how to determine if your low-voltage charging system is functioning correctly. Notice: I have switched to 4k video now. I am also trying HDR 10, but I am not convinced it is worth the work. TIMELINE: 0:00 Introduction 0:40 Parts of the low-voltage charging system 1:05 the high-voltage battery 3:12 The Inverter with DC-DC Converter 4:20 Jump Start Terminals underhood 5:00 Differences between 4th and 5th generation inverters with converters 8:26 The On-Board Charge Module (OBCM) and its functions 9:17 The Manual Service Disconnect (MSD) Location 9:33 The low-voltage battery (lead-acid) 10:35 Fluke Clamp Meters and Fluke Connect App usage for testing 12:15 Monitoring the DC-DC converter output current (Car Off) 13:00 Monitoring the low-voltage battery current (Car Off) 14:02 Monitoring the low-voltage battery voltage (Car Off) 15:36 Monitor results when the car is turned on. 16:45 Using Toyota's Global Techstream+ Scan tool software 17:45 Custom Data List for DC-DC converter 20:45 The official Toyota charging system check 21:40 Current usage of the headlights 22:08 Current usage of steering wheel heater 22:18 Current usage of windshield de-icer and 120-volt sockets 22:34 Current usage of rear window defogger and seat heaters and climate control on HI 23:18 Current usage with engine running 23:45 Summary of current usage from switched loads 25:17 Carbon-Pile Load testing tool 27:19 Calculating load to put on the system 28:17 See the carbon pile load test performed 30:45 Monitoring the low-voltage charging system while charging the high-voltage battery 32:30 MUST SEE: I was surprised by the operation of the front DC-DC converter 34:00 Summary TOOLS USED IN THIS VIDEO: See my Amazon Storefront for links to these tools https://www.amazon.com/shop/weberauto?linkCode=spc&tag=professorj066-20&isPublicView=true - Fluke 375 FC Clamp Meter https://www.amazon.com/shop/weberauto/list/35TZP5QPI1D19?ref_=aipsflist - Fluke 1587 FC Insulation Meter https://www.amazon.com/shop/weberauto/list/6JT8HNZWUUZX?ref_=aipsflist - Fluke Connect App (Available from Apple and Android App stores). - Associated 6039 Carbon Pile Load Tester https://www.amazon.com/shop/weberauto/list/3MJW24CCQ6SVZ?ref_=aipsflist ABOUT US Weber State University (WSU) Davis Campus - Automotive Technology Department - Hybrid and Electric Vehicles Lab. We teach current vehicle technologies to our automotive students at Weber State University and online. For more information, visit: https://www.weber.edu/automotive This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see https://www.weber.edu/automotive/J_Kelly.html ADDITIONAL TRAINING FOR YOU Join us for hybrid and electric vehicle training with two online courses and a 5-day on-campus boot camp with Professor John D. Kelly. See https://www.weber.edu/evtraining DONATE TO OUR DEPARTMENT Please consider a donation in my name to the Department of Automotive Technology at Weber State University here: https://advancement.weber.edu/Automotive