P0aa6 prius pdf

Well I have finally come across a problem I have never seen before. I washed the engine last week then sprayed it down with silicon and have a check hybrid system error. I figured that the fault would go away when everything dries. I do not have a cel and prius drives. I pulled the white cable in the fuse box for 10 minutes to reset the ecu and "check hybrid system" error pops up in minutes.

I just used techstream today for the first time and have found error P0AA6. I have also tried to clear the code in techstream but no luck. I have pulled an HV battery before so I am very aware of the dangers and will keep priuschat members posted.

I have hosed down the engine in the past with zero problems. I am thinking that the seals that protect the electrical bits have dried up and are no longer making electrical connections water tight, bummer. At least the engine looks clean. Travis Decker Member. I am still learning how to use the data stream. I am just clicking on buttons and hope the car does not catch on fire. ReboundSFOmjoo and 3 others like this.

Thank you. I will pull the disconnect and pull all the orange wires off and clean it with electrical contact cleaner. Ac has not been working correctly. So this would make sense. You can add a little dielectric grease to the connectors too to help keep the seals closed and corrosion and water out. I also put it on the posts of all 12V batteries to keep the corrosion down.

Here is what the mfg says about the grease. If a connection develops corrosion it can affect the way the entire electrical system functions. Dielectric grease keeps moisture out of electrical connections.We're all in this together. Learn more. Toyota Brochures. Choose any Toyota car, truck, SUV, minivan or hybrid in our lineup. Corolla Hatchback. GR Supra. Yaris Hatchback. Land Cruiser. Avalon Hybrid. Camry Hybrid. Corolla Hybrid.

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Highlander Hybrid. Prius Prime. RAV4 Hybrid. Toyota Full-Lineup Brochure. College Grad Rebate Program. Military Rebate Program. Toyota Rent a Car. Toyota Mobility. Historically, vehicle manufacturers and distributors have charged a separate fee for processing, handling and delivering vehicles to dealerships. Toyota's charge for these services is called the "Delivery, Processing and Handling Fee" and is based on the value of the processing, handling and delivery services Toyota provides as well as Toyota's overall pricing structure.

Toyota may make a profit on the Delivery, Processing and Handling Fee. Excludes taxes, license, title and available or regionally required equipment.We have Toyota Prius manuals covering a total of 43 years of production. This like all of our manuals is available to download for free in PDF format.

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How to download a Toyota Prius Repair Manual for any year. In total, that's over pages of content dedicated to your Toyota Prius. We get a lot of people coming to the site looking to get themselves a free Toyota Prius Haynes manual. We'll send you a quick email a new Toyota Prius document is added.

Spam free: Maximum of 1 email per month. Get your hands on the complete Toyota factory workshop software. Toyota Prius Service and Repair Manual. Repair Guide Pages. Toyota Prius Repair Manual. Other Manuals Pages. Toyota - Prius - Workshop Manual - - Other Manuals 37 Pages. Toyota - Prius - Workshop Manual - - 3. Other Manuals 38 Pages.

p0aa6 prius pdf

Toyota - Auto - prius-manual. Other Manuals 5 Pages. Toyota - Prius C - Workshop Manual - - Other Manuals 24 Pages.

Check Hybrid System P0AA6

Other Manuals 95 Pages.The inverter also supports voltage lowering conversion from the hybrid battery to the 12v system. I always like to begin with the most common scenarios that our customers experience. In this case its pretty simple- the Prius will turn on, have warning lights on the dash, but will not go into drive or reverse. Part of the trouble with diagnosing inverter failure is that the most common diagnostic code to come up P0AA6 voltage isolation fault is also the same code for a voltage leak on the hybrid battery, transaxle and AC compressor.

Thanks Toyota…. Most of the cheaper ones will not find these codes. There should be a second sub code and it will be either, or You have to advocate for yourself and ask them to recheck the codes.

p0aa6 prius pdf

Dealerships will almost always suggest replacing the hybrid battery or ask permission for unnecessary further diagnostics. I recommend checking that the connections to the 12v are properly secured and not horribly corroded either.

Next, check the health of the 12v using this method.

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If you replace the 12v and it is still showing weak voltage, this means that the inverter is not properly supplying power to it and must be replaced.

Lastly, if your Prius stalls while driving, but letting it cool down allows the car to drive again, the inverter may be overheating.

Check for inverter pump turbulence using this video. Code P0A93 suggests that the pump needs to be replaced. Codes P0A94 and P0A78 are much trickier, but typically require full inverter replacement. Toyota has issued a warranty enhancement for certain model year Prius vehicles. Best thing to do is call your local dealership with the codes and provide your VIN number. More information on this warranty enhancement can be found here. Our YouTube Channel. Tap here to call us Common Inverter Problems.

Check out Hometown Hybrids on Yelp. Voyage Houston.Visually inspect the related wiring harness and connectors.

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Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. Cost of diagnosing the P0AA6 code Labor: 1. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. P0aa6 Description The Battery Energy Control Module will diagnose its own systems and determine when a fault condition is present.

Diagnostics and system status is communicated from the battery energy control module to the vehicle control interface module through serial data.

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The vehicle is equipped with a high voltage isolation monitor feature. The purpose of the high voltage isolation circuit is to test the resistance between the high voltage positive and negative direct current DC bus and chassis ground. The battery energy control module only runs this test when the ignition transitions from ON to OFF and the high voltage contactor relays have opened. The battery energy control module has an internal isolation sensor that measures the resistance between the high voltage DC positive and negative bus and chassis ground.

The battery energy control module runs an internal self check of this sensor circuit. The battery energy control module sends an AC signal over the DC bus and monitors its amplitude. A low amplitude or collapsed return signal indicates a loss of resistance to chassis ground and a loss of isolation will be indicated by the hybrid powertrain control module 2.

Because this diagnostic runs after system power down, the diagnostic status does not get reported until the next key cycle. Get Access to Factory Service Manuals. Need more help? Get the P0aa6 code diagnosed by a professional: Find a repair shop in your area.

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Related Information. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0aa6 code? Have you replaced any parts? Any information is appreciated. Repair Importance Level: 3. Why is the Engine Light ON? Home - About AutoCodes. Posted and Edit by AutoCodes.Long ago we published a blog on Gen 1 transmission failure superseded to yet another blog here.

Repair of the Week! - Gen 2 Prius P0AA6

Around the same time we predicted Gen 2 transmissions would be more robust. While this remains statistically true, our experience has proven that they are not immune to transmission problems of their own. Common symptoms include:. Master warning light red triangle 6.

Diagnostic trouble codes:. LG currently operates an overnight shift 7 days a week dedicated to hybrid taxi cabs. With this experience we can describe Gen 2 Prius transmission failure as routine, somewhere between k miles. The most common indication is trouble code P0AA6 no other symptomsbut we have also seen broken chains, failed bearings, bad MG1s trouble code P0A7A and P0A92and seized planetaries altogether. We have also seen these problems on private cars, as they get older.

Our original poster child see the k mile Prius blog is now outpaced by many a commuter and second owner, and our experience is far more informed. We are ahead of the dealer. Upshot: if your car has a problem we can isolate the source be it transmission OR somewhere else. We also stock inverters, batteries, simple sensors, and ECUs. We are capable and prepared to fix your car.

For more on individual problems, keep reading. The generic information code isand the transmission specific info code is While there are other potential causes of P0AA6, the most common by far is winding deterioration in the traction motor MG2. The Gen 1 equivalent of P0AA6 is P, and when it sets the car will continue to ready on and drive normally. With Gen 2 Prius, the car will not allow the car to restart once the code sets.

p0aa6 prius pdf

Toyota engineers decided HV faults were highly dangerous and the car was unsafe to drive. Thus we can interpret that Toyota admits this condition is not that unsafe after all. Taxi drivers are tenacious as hell, and those commissioned to Gen 2 Prius often resort to disconnecting the 12v battery or pulling the necessary fuses to erase the P0AA6 and continue driving. Eventually the car developed another problem more on this later which necessitated a transmission replacement.

For dealer techs unfamiliar with it, the problem is mysterious; most recently a customer came to us for diagnosis after the dealer already installed an inverter at no small charge despite the information code pointing to the transmission. This is a case where the technician cannot confirm that the problem is inside the transmission at least without getting the assembly suitably hot before performing an insulation test.

For instance, the information code points to the HV battery rather than the transmission which can direct the technician to look for damaged battery modules, leaking electrolyte to the chassis ground. There is a flat needle bearing that holds the planetary gearset from the MG1 case. This bearing is the weakest mechanical link, prone to failure over time. Once it collapses, the gear it supports falls inward against the load of the chain and grinds into the case of MG1.

Early signs are a whine when the engine starts or runs. See the video taken over a year ago of cabdedicated to our favorite hybrid instructor Jack Rosebro:.Page of Go. Page 51 - Condition and operation in the front pas Page 70 Page 71 - Child restraint system fixed with a chil Page 72 - For owners Page 73 - When installing in the rear center seat Page 74 - Using an anchor bracket for top tether Page 75 - Fixing the top tether strap to the ancho Page 94 - Instrument cluster light control Page 95 - Information automatically displayed Page 96 - When there is information to be notified Page Page - Switching the display mode Page - Switching contents displayed on the sub Page - Insert display Page - Route guidance display vehicles with na Page - Operational conditions Page Page - Pedestrian detection function Page Page Page - Situations in which the system may not o Page Page Page - Driving in vehicle-to-vehicle distance c Page Page - Setting the vehicle speed vehicle-to-ve Page - Adjusting the set speed Page - Changing the vehicle-to-vehicle distance Page - Resuming follow-up cruising when the veh Page - Approach warning vehicle-to-vehicle dis Page - Changing settings of the Intelligent Cle Page - Operation Page Page - Operation starting conditions Page - Display and buzzer for hybrid system out Page Page - Switching assist mode Page - Guidance screen Page - Canceling or stopping assist mode Page - How to park next to other vehicles back Page - Using the exit parallel parking assist m Page Page Page Page - Exit parallel parking assist mode Page - Multi-information display messages Page Page - When the operation is canceled Page Page - Precautions during use Page Page Page Page Page - Rear view monitor system Page - Using the rear view monitor system Page - Rear view monitor system precautions Page - Rear view monitor system camera Page - When the ground behind the vehicle slope Page - When approaching three-dimensional objec Page Page Page - Situations in which the tire pressure wa Page - When initialization of the tire pressure Page Page Page - Tire inflation pressure Page - Inspection and adjustment procedure Page - Instructions for checking tire inflation Page - If your vehicle needs to be towed Page - Towing with a sling-type truck Page - Using a flatbed truck Page - Emergency towing procedure Page Page Page - If you think something is wrong Page - If a warning light turns on or a warning Page - Location of the spare tire, jack and too Page - Before repairing the tire Page - Location of the emergency tire puncture Page - Emergency tire puncture repair kit compo Page - Taking out the emergency tire puncture r Page - Emergency tire puncture repair kit Page Page Page Page Page - If the hybrid system will not start Page - Emergency start function Page - If the electronic key does not operate p Quick Links.


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