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mr_guy_mann's Recent Activity

  1. mr_guy_mann replied to the thread Interpeting OBD "Help".

    Well, Chapman keeps pointing to the "2004 Toyota Prius new car features". It's a lengthy publication that covers much of the theory and...

    Jul 1, 2024 at 11:03 PM

  2. mr_guy_mann replied to the thread P0A9B Hybrid Battery Temperature Sensor Cicuit.

    You can get a decent scantool app and device for your smartphone, here's a review thread. Some of the options can scan all systems on a...

    Jul 1, 2024 at 10:59 PM

  3. mr_guy_mann replied to the thread Roommate's Car - C1343.

    As Chapman suggests, clear the code and look at the data. See if both rear sensors show "the same" while pressing on the brakes (both...

    Jul 1, 2024 at 8:18 AM

  4. mr_guy_mann replied to the thread Information on Steering and Hybrid Coolant Pump Recalls C0T and C0U.

    Your symptoms could be the result of a failed inverter coolant pump. Power the car on and look in the inverter coolant reservoir for...

    Jul 1, 2024 at 8:12 AM

  5. mr_guy_mann replied to the thread Interpeting OBD "Help".

    "It depends". Fuel trims are additive. (+10%) ST + (-5%) LT = +5% total. STFT will move around a bunch as you drive. It can vary a...

    Jun 30, 2024 at 12:32 PM

  6. mr_guy_mann replied to the thread GEN 2 Lemon.

    So, a digital communication signal is what's known as a "square wave". The voltage on the circuit has only two values, a "high state" or...

    Jun 30, 2024 at 10:25 AM

  7. mr_guy_mann replied to the thread GEN 2 Lemon.

    Hello and welcome yo PriusChat! That's quite the first post! So, most of the codes that you have are not "high priority" until you get...

    Jun 29, 2024 at 11:20 AM

  8. mr_guy_mann replied to the thread Alternator. ?.

    Well... It's the ECM programming to make use of the different camshaft and compression ratio between the Prius and non Prius engines....

    Jun 29, 2024 at 10:46 AM

  9. mr_guy_mann replied to the thread Interpeting OBD "Help".

    When the engineers test the powertrain, they figure out what is needed (fuel, ignition advance, etc) to achieve their goals (hp,...

    Jun 29, 2024 at 9:48 AM

  10. mr_guy_mann replied to the thread Speedometer calibration?.

    You would have to talk to someone who does a lot of work on the Combination Meter. The ABS system takes readings from the wheel speed...

    Jun 28, 2024 at 11:15 PM

  11. mr_guy_mann replied to the thread Prius wouldn't start.

    I would look at battery block voltage data from the battery ecu. Whichever one looks "wrong" will point you toward the problem circuit....

    Jun 28, 2024 at 10:08 PM

  12. mr_guy_mann replied to the thread Bad water pump P0A93 coolant loss in replacement process?.

    Option 1, use "hose pinch off" pliers to squeeze both hoses shut before you take them off the old pump. You only lose a cup or so of...

    Jun 28, 2024 at 10:48 AM

  13. mr_guy_mann replied to the thread brake blink codes.

    There is no subscription for the first vehicle brand you select. So if you buy the AP200 and set it up with Toyota, that's it. No more...

    Jun 27, 2024 at 1:03 PM

  14. mr_guy_mann liked dolj's post in the thread P0A9B Hybrid Battery Temperature Sensor Cicuit.

    No, not based on any of the data you have posted so far. Nope. The only reason to replace the battery ECU would be if any of the pins...

    Jun 27, 2024 at 9:29 AM

  15. mr_guy_mann liked VFerdman's post in the thread I have read a lot, but would love a distillation on P1121.

    I received the valve yesterday Genuine Toyota part from the dealer at just under $120 after taxes) and replaced the old one with it. It...

    Jun 27, 2024 at 9:25 AM
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