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2nd Gen Technology

Discussion in 'Gen 2 Prius Technical Discussion' started by EZW1, Jun 9, 2009.

  1. EZW1

    EZW1 Active Member

    Joined:
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    Vehicle:
    2016 Prius v wagon
    Model:
    Four Touring
    Most are already aware and, like I, appreciate the technology employed in the 2nd gen vehicle. I thought I'd take a moment to be a bit more specific and provide information about this technology.

    The numbers are staggering...

    Number of computer systems: 18
    A/C Control, Airbag, Battery ECU, BodyCertification ECU, Display, Engine Control ECU, Gateway ECU, Headlight Beam Level Control ECU, Hybrid Vehicle Control ECU, Navigation ECU, Occupant Classificaton ECU, Power Source Control ECU, Power Steering ECU, Skid Control ECU, Tire Pressure Warning ECU, Touch Screen, Transmission Control ECU

    Number of fused circuits: 56
    Traction Battery, 1-120A, 1-100A, 11-15A, 1-75A, 1-60A, 2-50A, 3-40A, 9-30A, 13-10A, 2-25A, 3-20A, 8-7.5A, 1-5A

    Number of electrical relays: 27
    ABS MTR2, ABS NO2, AC W/P, ATC HTR1, BK/UP LP, C/OPN, CHS W/P, DEF, DIM, DRL NO4, EFI M, FAN NO1, FAN NO2, Flasher, FOG, H-LP, Horn, HTR, HTR, IG1, IG2, IGCT, INV W/P, No1 BatterY Blower, P CON, PTC HTR2, PWR, T-LP

    Number of wiring harnesses: 23

    Number of electrical connectors: 337

    Number of ground points: 17

    I thought you might appreciate this.
     
    #1 EZW1, Jun 9, 2009
    2 people like this.
  2. 2009Prius

    2009Prius A Wimpy DIYer

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    I don't know whether to be happy or worrisome. More parts mean more chances to fail. :eek:
     
    #2 2009Prius, Jun 10, 2009
  3. Flying White Dutchman

    Flying White Dutchman Senior Member

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    nice
     
    #3 Flying White Dutchman, Jun 10, 2009
  4. Patrick Wong

    Patrick Wong DIY Enthusiast

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    This is why you should consider it to be a small miracle each day when you get into your Prius, start it, see READY and no warning lights appear.
     
    #4 Patrick Wong, Jun 10, 2009
  5. Flying White Dutchman

    Flying White Dutchman Senior Member

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    no miracle just good enginering
     
    #5 Flying White Dutchman, Jun 10, 2009
  6. EZW1

    EZW1 Active Member

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    Vehicle:
    2016 Prius v wagon
    Model:
    Four Touring
    Yes, good engineering and an example of the technology utilized. One of the reasons I purchased the car was for the technology. Also why I bought Toyota's extended warranty. When the dealer told me the replacement cost (parts + labor) for any one of those computer systems would exceed $1,000, I jumped.
     
    #6 EZW1, Jun 11, 2009
  7. sorka

    sorka Active Member

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    Any time you can replace mechanical complexity with microprocessors and software, you dramatically reduce the amount of wear and tear related failures that occur. Testing and debugging is another story, but that's where good engineering comes in. With mechanical systems, the more they're used, the more chance of a failure. With software, the more it's used without problems, the more likely that problems won't be encountered.

    Of course you can have electronic component failure but with good engineering, the incidence of failure is lower than with good engineering in mechanical systems.
     
    #7 sorka, Jun 16, 2009
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