2024 Prius Prime PHEV Low-Voltage Charging System Testing

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...
Fluke 375 FC Clamp Meter https://www.amazon.com/shop/weberauto...
Fluke 1587 FC Insulation Meter https://www.amazon.com/shop/weberauto...
Fluke Connect App (Available from Apple and Android App stores).
Associated 6039 Carbon Pile Load Tester https://www.amazon.com/shop/weberauto...

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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_Ke...

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